% $Id$ % tex.ch for C compilation with web2c, derived from various other change files. % By Tim Morgan, UC Irvine ICS Department, and many others. % % Be very careful when making changes to this file, as it is used to % generate TeX, e-TeX, and pdfTeX, and most changes require similar % changes to be made to the Aleph sources. % % (05/28/86) ETM Started with TeX 2.0 % (06/03/87) ETM Brought up to TeX 2.2 % (09/26/87) ETM Brought up to TeX 2.3 % (10/01/87) ETM Brought up to TeX 2.5 % (12/21/87) ETM Brought up to TeX 2.7 % (01/14/88) ETM Brought up to TeX 2.9 % (02/20/88) PAM Revised format and module numbers % (03/01/88) ETM Eliminated some unused variables and unnecessary tests % (05/09/88) ETM Added yet another casting bug fix % (06/21/88) ETM Brought up to TeX version 2.93 % (12/11/88) ETM Brought up to TeX version 2.94 % (01/12/89) PAM Brought up to TeX version 2.95 % (02/14/89) ETM Brought up to TeX version 2.96 % (03/10/89) ETM Brought up to TeX version 2.98 % (07/06/89) ETM Brought up to TeX version 2.991 % (11/30/89) KB To version 2.992 (8-bit). % (01/10/90) SR To version 2.993. % (03/27/90) KY To version 3.0. % (more recent changes in ChangeLog) % % The TeX program is copyright (C) 1982 by D. E. Knuth. % TeX is a trademark of the American Mathematical Society. % % Includes MLTEX.CH (Version 2.2) in text format, as of Dec 17, 1995. % MLTeX is copyright (C) 1990-92 by Michael J. Ferguson; all rights reserved. % MLTeX Version 2.2 is copyright (C) 1995 by B. Raichle; all rights reserved. % % The MLTeX changes are copyrighted so that we have some chance to % forbid unauthorized copies; we explicitly authorize copying of % correct MLTeX implementations, and not of incorrect ones! % % (This means that you can use the MLTeX changes as free as you can % use TeX and its algorithm.) % % Copying of this file is authorized only if either % (1) you make absolutely no changes to your copy, including name, or % (2) if you do make changes, you name it to something other than % "mltex.ch", "char_sub.ch", or "charsub.ch". % % Except for MLTeX, the new code in this file is in the public domain. % % The module numbers in this change file refer to TEX.WEB 3.14159 as % of March, 1995 (published as Donald E. Knuth, TeX: The Program, % Volume B of Computers & Typesetting). @x [0.0] l.83 - WEAVE: print changes only. \def\?##1]{\hbox to 1in{\hfil##1.\ }} } @y 83 \def\?##1]{\hbox{Changes to ##1.\ }} } \let\maybe=\iffalse @z @x [1.2] l.185 - MLTeX: add comment about banner line change November 1984]. @y November 1984]. ML\TeX{} will add new primitives changing the behaviour of \TeX. The |banner| string has to be changed. We do not change the |banner| string, but will output an additional line to make clear that this is a modified \TeX{} version. @z @x [1.2] l.188 @d banner=='This is TeX, Version 3.141592653' {printed when \TeX\ starts} @y @d TeX_banner_k=='This is TeXk, Version 3.141592653' {printed when \TeX\ starts} @d TeX_banner=='This is TeX, Version 3.141592653' {printed when \TeX\ starts} @# @d banner==TeX_banner @d banner_k==TeX_banner_k @z @x [1.4] l.233 - program header Actually the heading shown here is not quite normal: The |program| line does not mention any |output| file, because \ph\ would ask the \TeX\ user to specify a file name if |output| were specified here. @:PASCAL H}{\ph@> @^system dependencies@> @y @z @x [1.4] l.243 - labels in outer block not needed program TEX; {all file names are defined dynamically} label @@/ @y program TEX; {all file names are defined dynamically} @z @x [1.6] l.267 - labels in outer block not needed @ Three labels must be declared in the main program, so we give them symbolic names. @d start_of_TEX=1 {go here when \TeX's variables are initialized} @d end_of_TEX=9998 {go here to close files and terminate gracefully} @d final_end=9999 {this label marks the ending of the program} @= start_of_TEX@t\hskip-2pt@>, end_of_TEX@t\hskip-2pt@>,@,final_end; {key control points} @y @ For Web2c, labels are not declared in the main program, but we still have to declare the symbolic names. @d start_of_TEX=1 {go here when \TeX's variables are initialized} @d final_end=9999 {this label marks the ending of the program} @z % Here we change these WEB symbols, which are used much as #ifdef's % are in C, into something which will get translated into actual #ifdef's. @x [1.7] l.292 - debug..gubed, stat..tats @d debug==@{ {change this to `$\\{debug}\equiv\null$' when debugging} @d gubed==@t@>@} {change this to `$\\{gubed}\equiv\null$' when debugging} @y @d debug==ifdef('TEXMF_DEBUG') @d gubed==endif('TEXMF_DEBUG') @z @x [1.7] l.297 - debug..gubed, stat..tats @d stat==@{ {change this to `$\\{stat}\equiv\null$' when gathering usage statistics} @d tats==@t@>@} {change this to `$\\{tats}\equiv\null$' when gathering usage statistics} @y @d stat==ifdef('STAT') @d tats==endif('STAT') @z @x [1.8] Somewhat different for `init...tini'.. 310 m.8 the codewords `$|init|\ldots|tini|$'. @d init== {change this to `$\\{init}\equiv\.{@@\{}$' in the production version} @d tini== {change this to `$\\{tini}\equiv\.{@@\}}$' in the production version} @y 314 the codewords `$|init|\ldots|tini|$' for declarations and by the codewords `$|Init|\ldots|Tini|$' for executable code. This distinction is helpful for implementations where a run-time switch differentiates between the two versions of the program. @d init==ifdef('INITEX') @d tini==endif('INITEX') @d Init==init if ini_version then begin @d Tini==end;@+tini @f Init==begin @f Tini==end @z @x [1.8] l.319 - init...tini is dynamic @!init @@;@+tini @y 318 @!Init @@;@+Tini @z @x [1.11] l.375 - Compile-time constants: most removed for dynamic allocation. @= @!mem_max=30000; {greatest index in \TeX's internal |mem| array; must be strictly less than |max_halfword|; must be equal to |mem_top| in \.{INITEX}, otherwise |>=mem_top|} @!mem_min=0; {smallest index in \TeX's internal |mem| array; must be |min_halfword| or more; must be equal to |mem_bot| in \.{INITEX}, otherwise |<=mem_bot|} @!buf_size=500; {maximum number of characters simultaneously present in current lines of open files and in control sequences between \.{\\csname} and \.{\\endcsname}; must not exceed |max_halfword|} @!error_line=72; {width of context lines on terminal error messages} @!half_error_line=42; {width of first lines of contexts in terminal error messages; should be between 30 and |error_line-15|} @!max_print_line=79; {width of longest text lines output; should be at least 60} @!stack_size=200; {maximum number of simultaneous input sources} @!max_in_open=6; {maximum number of input files and error insertions that can be going on simultaneously} @!font_max=75; {maximum internal font number; must not exceed |max_quarterword| and must be at most |font_base+256|} @!font_mem_size=20000; {number of words of |font_info| for all fonts} @!param_size=60; {maximum number of simultaneous macro parameters} @!nest_size=40; {maximum number of semantic levels simultaneously active} @!max_strings=3000; {maximum number of strings; must not exceed |max_halfword|} @!string_vacancies=8000; {the minimum number of characters that should be available for the user's control sequences and font names, after \TeX's own error messages are stored} @!pool_size=32000; {maximum number of characters in strings, including all error messages and help texts, and the names of all fonts and control sequences; must exceed |string_vacancies| by the total length of \TeX's own strings, which is currently about 23000} @!save_size=600; {space for saving values outside of current group; must be at most |max_halfword|} @!trie_size=8000; {space for hyphenation patterns; should be larger for \.{INITEX} than it is in production versions of \TeX} @!trie_op_size=500; {space for ``opcodes'' in the hyphenation patterns} @!dvi_buf_size=800; {size of the output buffer; must be a multiple of 8} @!file_name_size=40; {file names shouldn't be longer than this} @!pool_name='TeXformats:TEX.POOL '; {string of length |file_name_size|; tells where the string pool appears} @y @d file_name_size == maxint @d ssup_error_line = 255 @d ssup_max_strings == 2097151 {Larger values than 65536 cause the arrays to consume much more memory.} @d ssup_trie_opcode == 65535 @d ssup_trie_size == @"3FFFFF @d ssup_hyph_size == 65535 {Changing this requires changing (un)dumping!} @d iinf_hyphen_size == 610 {Must be not less than |hyph_prime|!} @d max_font_max=9000 {maximum number of internal fonts; this can be increased, but |hash_size+max_font_max| should not exceed 29000.} @d font_base=0 {smallest internal font number; must be |>= min_quarterword|; do not change this without modifying the dynamic definition of the font arrays.} @= @!hash_offset=514; {smallest index in hash array, i.e., |hash_base| } {Use |hash_offset=0| for compilers which cannot decrement pointers.} @!trie_op_size=35111; {space for ``opcodes'' in the hyphenation patterns; best if relatively prime to 313, 361, and 1009.} @!neg_trie_op_size=-35111; {for lower |trie_op_hash| array bound; must be equal to |-trie_op_size|.} @!min_trie_op=0; {first possible trie op code for any language} @!max_trie_op=ssup_trie_opcode; {largest possible trie opcode for any language} @!pool_name=TEXMF_POOL_NAME; {this is configurable, for the sake of ML-\TeX} {string of length |file_name_size|; tells where the string pool appears} @!engine_name=TEXMF_ENGINE_NAME; {the name of this engine} @# @!inf_mem_bot = 0; @!sup_mem_bot = 1; @!inf_main_memory = 3000; @!sup_main_memory = 256000000; @!inf_trie_size = 8000; @!sup_trie_size = ssup_trie_size; @!inf_max_strings = 3000; @!sup_max_strings = ssup_max_strings; @!inf_strings_free = 100; @!sup_strings_free = sup_max_strings; @!inf_buf_size = 500; @!sup_buf_size = 30000000; @!inf_nest_size = 40; @!sup_nest_size = 4000; @!inf_max_in_open = 6; @!sup_max_in_open = 127; @!inf_param_size = 60; @!sup_param_size = 32767; @!inf_save_size = 600; @!sup_save_size = 30000000; @!inf_stack_size = 200; @!sup_stack_size = 30000; @!inf_dvi_buf_size = 800; @!sup_dvi_buf_size = 65536; @!inf_font_mem_size = 20000; @!sup_font_mem_size = 147483647; {|integer|-limited, so 2 could be prepended?} @!sup_font_max = max_font_max; @!inf_font_max = 50; {could be smaller, but why?} @!inf_pool_size = 32000; @!sup_pool_size = 40000000; @!inf_pool_free = 1000; @!sup_pool_free = sup_pool_size; @!inf_string_vacancies = 8000; @!sup_string_vacancies = sup_pool_size - 23000; @!sup_hash_extra = sup_max_strings; @!inf_hash_extra = 0; @!sup_hyph_size = ssup_hyph_size; @!inf_hyph_size = iinf_hyphen_size; {Must be not less than |hyph_prime|!} @!inf_expand_depth = 10; @!sup_expand_depth = 10000000; @z @x [1.12] l.427 - Constants that are WEB numeric macros. @d mem_bot=0 {smallest index in the |mem| array dumped by \.{INITEX}; must not be less than |mem_min|} @d mem_top==30000 {largest index in the |mem| array dumped by \.{INITEX}; must be substantially larger than |mem_bot| and not greater than |mem_max|} @d font_base=0 {smallest internal font number; must not be less than |min_quarterword|} @d hash_size=2100 {maximum number of control sequences; it should be at most about |(mem_max-mem_min)/10|} @d hash_prime=1777 {a prime number equal to about 85\pct! of |hash_size|} @d hyph_size=307 {another prime; the number of \.{\\hyphenation} exceptions} @y @d hash_size=15000 {maximum number of control sequences; it should be at most about |(mem_max-mem_min)/10|; see also |font_max|} @d hash_prime=8501 {a prime number equal to about 85\pct! of |hash_size|} @d hyph_prime=607 {another prime for hashing \.{\\hyphenation} exceptions; if you change this, you should also change |iinf_hyphen_size|.} @z @x [1.16] l.498 - Use C macros for `incr' and `decr'. @d incr(#) == #:=#+1 {increase a variable by unity} @d decr(#) == #:=#-1 {decrease a variable by unity} @y @z % The text_char type is used as an array index into xord. The % default type `char' produces signed integers, which are bad array % indices in C. @x [2.19] l.565 - data type text_char is 8-bit ASCII_code @d text_char == char {the data type of characters in text files} @y @d text_char == ASCII_code {the data type of characters in text files} @z @x [2.20] l.579 - printable characters @!xchr: array [ASCII_code] of text_char; {specifies conversion of output characters} @y xchr: array [ASCII_code] of text_char; { specifies conversion of output characters } xprn: array [ASCII_code] of ASCII_code; { non zero iff character is printable } @z @x [2.23] l.723 - Translate characters if desired, otherwise allow them all. for i:=0 to @'37 do xchr[i]:=' '; for i:=@'177 to @'377 do xchr[i]:=' '; @y {Initialize |xchr| to the identity mapping.} for i:=0 to @'37 do xchr[i]:=i; for i:=@'177 to @'377 do xchr[i]:=i; @z @x [2.24] l.733 - Don't reinitialize xord. for i:=0 to @'176 do xord[xchr[i]]:=i; @y for i:=0 to @'176 do xord[xchr[i]]:=i; {Set |xprn| for printable ASCII, unless |eight_bit_p| is set.} for i:=0 to 255 do xprn[i]:=(eight_bit_p or ((i>=" ")and(i<="~"))); {The idea for this dynamic translation comes from the patch by Libor Skarvada \.{} and Petr Sojka \.{}. I didn't use any of the actual code, though, preferring a more general approach.} {This updates the |xchr|, |xord|, and |xprn| arrays from the provided |translate_filename|. See the function definition in \.{texmfmp.c} for more comments.} if translate_filename then read_tcx_file; @z % [3.26] name_of_file is no longer an array. And change the destination % type to text_char, which fixes: % % Date: 19 Sep 1994 10:38:24 +0200 % From: thorinn@diku.dk (Lars Mathiesen) % When echoed to the screen and in the log, character codes % above '177 in file names are shown wrongly (typically as ^@). % @x [3.26] l.789 - name_of_file is no longer an array @!name_of_file:packed array[1..file_name_size] of char;@;@/ {on some systems this may be a \&{record} variable} @y @!name_of_file:^text_char; @z @x [3.27] l.794 - Do file opening in C. @ The \ph\ compiler with which the present version of \TeX\ was prepared has extended the rules of \PASCAL\ in a very convenient way. To open file~|f|, we can write $$\vbox{\halign{#\hfil\qquad&#\hfil\cr |reset(f,@t\\{name}@>,'/O')|&for input;\cr |rewrite(f,@t\\{name}@>,'/O')|&for output.\cr}}$$ The `\\{name}' parameter, which is of type `{\bf packed array $[\langle\\{any}\rangle]$ of \\{char}}', stands for the name of the external file that is being opened for input or output. Blank spaces that might appear in \\{name} are ignored. The `\.{/O}' parameter tells the operating system not to issue its own error messages if something goes wrong. If a file of the specified name cannot be found, or if such a file cannot be opened for some other reason (e.g., someone may already be trying to write the same file), we will have |@!erstat(f)<>0| after an unsuccessful |reset| or |rewrite|. This allows \TeX\ to undertake appropriate corrective action. @:PASCAL H}{\ph@> @^system dependencies@> \TeX's file-opening procedures return |false| if no file identified by |name_of_file| could be opened. @d reset_OK(#)==erstat(#)=0 @d rewrite_OK(#)==erstat(#)=0 @p function a_open_in(var f:alpha_file):boolean; {open a text file for input} begin reset(f,name_of_file,'/O'); a_open_in:=reset_OK(f); end; @# function a_open_out(var f:alpha_file):boolean; {open a text file for output} begin rewrite(f,name_of_file,'/O'); a_open_out:=rewrite_OK(f); end; @# function b_open_in(var f:byte_file):boolean; {open a binary file for input} begin reset(f,name_of_file,'/O'); b_open_in:=reset_OK(f); end; @# function b_open_out(var f:byte_file):boolean; {open a binary file for output} begin rewrite(f,name_of_file,'/O'); b_open_out:=rewrite_OK(f); end; @# function w_open_in(var f:word_file):boolean; {open a word file for input} begin reset(f,name_of_file,'/O'); w_open_in:=reset_OK(f); end; @# function w_open_out(var f:word_file):boolean; {open a word file for output} begin rewrite(f,name_of_file,'/O'); w_open_out:=rewrite_OK(f); end; @y @ All of the file opening functions are defined in C. @z @x [3.28] l.850 - Do file closing in C. @ Files can be closed with the \ph\ routine `|close(f)|', which @:PASCAL H}{\ph@> @^system dependencies@> should be used when all input or output with respect to |f| has been completed. This makes |f| available to be opened again, if desired; and if |f| was used for output, the |close| operation makes the corresponding external file appear on the user's area, ready to be read. These procedures should not generate error messages if a file is being closed before it has been successfully opened. @p procedure a_close(var f:alpha_file); {close a text file} begin close(f); end; @# procedure b_close(var f:byte_file); {close a binary file} begin close(f); end; @# procedure w_close(var f:word_file); {close a word file} begin close(f); end; @y @ And all the file closing routines as well. @z @x [3.30] l.888 - Array size of input buffer is determined at runtime. @!buffer:array[0..buf_size] of ASCII_code; {lines of characters being read} @y @!buffer:^ASCII_code; {lines of characters being read} @z @x [3.31] l.933 - Do `input_ln' in C. @p function input_ln(var f:alpha_file;@!bypass_eoln:boolean):boolean; {inputs the next line or returns |false|} var last_nonblank:0..buf_size; {|last| with trailing blanks removed} begin if bypass_eoln then if not eof(f) then get(f); {input the first character of the line into |f^|} last:=first; {cf.\ Matthew 19\thinspace:\thinspace30} if eof(f) then input_ln:=false else begin last_nonblank:=first; while not eoln(f) do begin if last>=max_buf_stack then begin max_buf_stack:=last+1; if max_buf_stack=buf_size then @; end; buffer[last]:=xord[f^]; get(f); incr(last); if buffer[last-1]<>" " then last_nonblank:=last; end; last:=last_nonblank; input_ln:=true; end; end; @y We define |input_ln| in C, for efficiency. Nevertheless we quote the module `Report overflow of the input buffer, and abort' here in order to make \.{WEAVE} happy, since part of that module is needed by e-TeX. @p @{ @ @} @z % [3.32] `term_in' and `term_out' are standard input and output. % Declare the variables that used to be constants. @x [3.32] l.961 - `term_in' and `term_out' are standard input and output. @= @!term_in:alpha_file; {the terminal as an input file} @!term_out:alpha_file; {the terminal as an output file} @y @d term_in==stdin {the terminal as an input file} @d term_out==stdout {the terminal as an output file} @= @!init @!ini_version:boolean; {are we \.{INITEX}?} @!dump_option:boolean; {was the dump name option used?} @!dump_line:boolean; {was a \.{\%\AM format} line seen?} tini@/ @# @!dump_name:const_cstring; {format name for terminal display} @# @!bound_default:integer; {temporary for setup} @!bound_name:const_cstring; {temporary for setup} @# @!mem_bot:integer;{smallest index in the |mem| array dumped by \.{INITEX}; must not be less than |mem_min|} @!main_memory:integer; {total memory words allocated in initex} @!extra_mem_bot:integer; {|mem_min:=mem_bot-extra_mem_bot| except in \.{INITEX}} @!mem_min:integer; {smallest index in \TeX's internal |mem| array; must be |min_halfword| or more; must be equal to |mem_bot| in \.{INITEX}, otherwise |<=mem_bot|} @!mem_top:integer; {largest index in the |mem| array dumped by \.{INITEX}; must be substantially larger than |mem_bot|, equal to |mem_max| in \.{INITEX}, else not greater than |mem_max|} @!extra_mem_top:integer; {|mem_max:=mem_top+extra_mem_top| except in \.{INITEX}} @!mem_max:integer; {greatest index in \TeX's internal |mem| array; must be strictly less than |max_halfword|; must be equal to |mem_top| in \.{INITEX}, otherwise |>=mem_top|} @!error_line:integer; {width of context lines on terminal error messages} @!half_error_line:integer; {width of first lines of contexts in terminal error messages; should be between 30 and |error_line-15|} @!max_print_line:integer; {width of longest text lines output; should be at least 60} @!max_strings:integer; {maximum number of strings; must not exceed |max_halfword|} @!strings_free:integer; {strings available after format loaded} @!string_vacancies:integer; {the minimum number of characters that should be available for the user's control sequences and font names, after \TeX's own error messages are stored} @!pool_size:integer; {maximum number of characters in strings, including all error messages and help texts, and the names of all fonts and control sequences; must exceed |string_vacancies| by the total length of \TeX's own strings, which is currently about 23000} @!pool_free:integer;{pool space free after format loaded} @!font_mem_size:integer; {number of words of |font_info| for all fonts} @!font_max:integer; {maximum internal font number; ok to exceed |max_quarterword| and must be at most |font_base|+|max_font_max|} @!font_k:integer; {loop variable for initialization} @!hyph_size:integer; {maximum number of hyphen exceptions} @!trie_size:integer; {space for hyphenation patterns; should be larger for \.{INITEX} than it is in production versions of \TeX. 50000 is needed for English, German, and Portuguese.} @!buf_size:integer; {maximum number of characters simultaneously present in current lines of open files and in control sequences between \.{\\csname} and \.{\\endcsname}; must not exceed |max_halfword|} @!stack_size:integer; {maximum number of simultaneous input sources} @!max_in_open:integer; {maximum number of input files and error insertions that can be going on simultaneously} @!param_size:integer; {maximum number of simultaneous macro parameters} @!nest_size:integer; {maximum number of semantic levels simultaneously active} @!save_size:integer; {space for saving values outside of current group; must be at most |max_halfword|} @!dvi_buf_size:integer; {size of the output buffer; must be a multiple of 8} @!expand_depth:integer; {limits recursive calls to the |expand| procedure} @!parse_first_line_p:cinttype; {parse the first line for options} @!file_line_error_style_p:cinttype; {format messages as file:line:error} @!eight_bit_p:cinttype; {make all characters printable by default} @!halt_on_error_p:cinttype; {stop at first error} @!quoted_filename:boolean; {current filename is quoted} {Variables for source specials} @!src_specials_p : boolean;{Whether |src_specials| are enabled at all} @!insert_src_special_auto : boolean; @!insert_src_special_every_par : boolean; @!insert_src_special_every_parend : boolean; @!insert_src_special_every_cr : boolean; @!insert_src_special_every_math : boolean; @!insert_src_special_every_hbox : boolean; @!insert_src_special_every_vbox : boolean; @!insert_src_special_every_display : boolean; @z @x [3.33] l.964 - We don't need to open terminal files. @ Here is how to open the terminal files in \ph. The `\.{/I}' switch suppresses the first |get|. @:PASCAL H}{\ph@> @^system dependencies@> @d t_open_in==reset(term_in,'TTY:','/O/I') {open the terminal for text input} @d t_open_out==rewrite(term_out,'TTY:','/O') {open the terminal for text output} @y @ Here is how to open the terminal files. |t_open_out| does nothing. |t_open_in|, on the other hand, does the work of ``rescanning,'' or getting any command line arguments the user has provided. It's defined in C. @d t_open_out == {output already open for text output} @z @x [3.34] l.982 - Flushing output to terminal files. these operations can be specified in \ph: @:PASCAL H}{\ph@> @^system dependencies@> @d update_terminal == break(term_out) {empty the terminal output buffer} @d clear_terminal == break_in(term_in,true) {clear the terminal input buffer} @y these operations can be specified with {\mc UNIX}. |update_terminal| does an |fflush|. |clear_terminal| is redefined to do nothing, since the user should control the terminal. @^system dependencies@> @d update_terminal == fflush (term_out) @d clear_terminal == do_nothing @z @x [3.35] l.1017 - needed for e-TeX, but differently @= if format_ident=0 then begin write_ln(term_out,'Buffer size exceeded!'); goto final_end; @.Buffer size exceeded@> end else begin cur_input.loc_field:=first; cur_input.limit_field:=last-1; @y Routine is implemented in C; part of module is, however, needed for e-TeX. @= begin cur_input.loc_field:=first; cur_input.limit_field:=last-1; @z @x [3.37] l.1055 - |init_terminal|, reading the command line. @ The following program does the required initialization without retrieving a possible command line. It should be clear how to modify this routine to deal with command lines, if the system permits them. @^system dependencies@> @p function init_terminal:boolean; {gets the terminal input started} label exit; begin t_open_in; @y @ The following program does the required initialization. Iff anything has been specified on the command line, then |t_open_in| will return with |last > first|. @^system dependencies@> @p function init_terminal:boolean; {gets the terminal input started} label exit; begin t_open_in; if last > first then begin loc := first; while (loc < last) and (buffer[loc]=' ') do incr(loc); if loc < last then begin init_terminal := true; goto exit; end; end; @z @x [3.37] l.1068 - |init_terminal|, output missing newline. write(term_out,'! End of file on the terminal... why?'); @y write_ln(term_out,'! End of file on the terminal... why?'); @z @x [4.38] l.1126 - Array size for string pool is determined at runtime. @!pool_pointer = 0..pool_size; {for variables that point into |str_pool|} @!str_number = 0..max_strings; {for variables that point into |str_start|} @y @!pool_pointer = integer; {for variables that point into |str_pool|} @!str_number = 0..ssup_max_strings; {for variables that point into |str_start|} @z @x [4.39] l.1131 - Dynamically size pool arrays. @!str_pool:packed array[pool_pointer] of packed_ASCII_code; {the characters} @!str_start : array[str_number] of pool_pointer; {the starting pointers} @y @!str_pool: ^packed_ASCII_code; {the characters} @!str_start : ^pool_pointer; {the starting pointers} @z @x [4.47] l.1237 - string recycling @p @!init function get_strings_started:boolean; {initializes the string pool, @y @p @t\4@>@@/ @!init function get_strings_started:boolean; {initializes the string pool, @z @x [4.49] l.1272 -- Change documentation (probably needed in more places) would like string @'32 to be the single character @'32 instead of the @y would like string @'32 to be printed as the single character @'32 instead of the @z % [4.51] Open the pool file using a path, and can't do string % assignments directly. (`strcpy' and `strlen' work here because % `pool_name' is a constant string, and thus ends in a null and doesn't % start with a space.) @x [4.51] l.1314 - Open the pool file. name_of_file:=pool_name; {we needn't set |name_length|} if a_open_in(pool_file) then @y name_length := strlen (pool_name); name_of_file := xmalloc_array (ASCII_code, name_length + 1); strcpy (stringcast(name_of_file+1), pool_name); {copy the string} if a_open_in (pool_file, kpse_texpool_format) then @z @x [4.51] l.1322 - Make `TEX.POOL' lowercase, and change how it's read. else bad_pool('! I can''t read TEX.POOL.') @y else bad_pool('! I can''t read ', pool_name, '; bad path?') @z @x [4.52] l.1326 - Make `TEX.POOL' lowercase, and change how it's read. begin if eof(pool_file) then bad_pool('! TEX.POOL has no check sum.'); @.TEX.POOL has no check sum@> read(pool_file,m,n); {read two digits of string length} @y begin if eof(pool_file) then bad_pool('! ', pool_name, ' has no check sum.'); @.TEX.POOL has no check sum@> read(pool_file,m); read(pool_file,n); {read two digits of string length} @z @x [4.52] l.1332 - Make `TEX.POOL' lowercase, and change how it's read. bad_pool('! TEX.POOL line doesn''t begin with two digits.'); @y bad_pool('! ', pool_name, ' line doesn''t begin with two digits.'); @z @x [4.53] l.1354 - Make `TEX.POOL' lowercase, and change how it's read. bad_pool('! TEX.POOL check sum doesn''t have nine digits.'); @y bad_pool('! ', pool_name, ' check sum doesn''t have nine digits.'); @z @x [4.53] l.1360 - Make `TEX.POOL' lowercase, and change how it's read. done: if a<>@$ then bad_pool('! TEX.POOL doesn''t match; TANGLE me again.'); @y done: if a<>@$ then bad_pool('! ', pool_name, ' doesn''t match; tangle me again (or fix the path).'); @z @x [5.54] l.1422 - error_line @!trick_buf:array[0..error_line] of ASCII_code; {circular buffer for @y @!trick_buf:array[0..ssup_error_line] of ASCII_code; {circular buffer for @z @x l.1536 -- If the ``src-specials'' feature is active, change the banner. wterm(banner); @y if src_specials_p or file_line_error_style_p or parse_first_line_p then wterm(banner_k) else wterm(banner); @z @x [5.61] l.1556 - Print rest of banner. if format_ident=0 then wterm_ln(' (no format preloaded)') else begin slow_print(format_ident); print_ln; end; @y wterm(version_string); if format_ident=0 then wterm_ln(' (preloaded format=',dump_name,')') else begin slow_print(format_ident); print_ln; end; if shellenabledp then begin wterm(' '); if restrictedshell then begin wterm('restricted '); end; wterm_ln('\write18 enabled.'); end; if src_specials_p then begin wterm_ln(' Source specials enabled.') end; if translate_filename then begin wterm(' ('); fputs(translate_filename, stdout); wterm_ln(')'); end; @z @x [5.71] term_input: set limit when fatal_error if not input_ln(term_in,true) then fatal_error("End of file on the terminal!"); @y if not input_ln(term_in,true) then begin limit:=0; fatal_error("End of file on the terminal!"); end; @z @x [6.73] l.1732 - Add unspecified_mode. @d error_stop_mode=3 {stops at every opportunity to interact} @y @d error_stop_mode=3 {stops at every opportunity to interact} @d unspecified_mode=4 {extra value for command-line switch} @z @x [6.73] l.1734 - file:line:error style error messages. print_nl("! "); print(#); @y if file_line_error_style_p then print_file_line else print_nl("! "); print(#); @z @x [6.73] l.1738 - Add interaction_option. @!interaction:batch_mode..error_stop_mode; {current level of interaction} @y @!interaction:batch_mode..error_stop_mode; {current level of interaction} @!interaction_option:batch_mode..unspecified_mode; {set from command line} @z @x [6.74] l.1740 - Allow override by command line switch. @ @=interaction:=error_stop_mode; @y @ @=if interaction_option=unspecified_mode then interaction:=error_stop_mode else interaction:=interaction_option; @z % [6.81] Eliminate nonlocal goto, since C doesn't have them. % Plus, it's nicer just to do an exit with the appropriate status code % under Unix. We call it `uexit' because there's a WEB symbol called % `exit' already. We use a C macro to change `uexit' back to `exit'. @x [6.81] l.1852 - Eliminate nonlocal goto, since C doesn't have them. @ The |jump_out| procedure just cuts across all active procedure levels and goes to |end_of_TEX|. This is the only nontrivial |@!goto| statement in the whole program. It is used when there is no recovery from a particular error. Some \PASCAL\ compilers do not implement non-local |goto| statements. @^system dependencies@> In such cases the body of |jump_out| should simply be `|close_files_and_terminate|;\thinspace' followed by a call on some system procedure that quietly terminates the program. @= procedure jump_out; begin goto end_of_TEX; end; @y @ The |jump_out| procedure just cuts across all active procedure levels. The body of |jump_out| simply calls `|close_files_and_terminate|;\thinspace' followed by a call on some system procedure that quietly terminates the program. @^system dependencies@> @f noreturn==procedure @d do_final_end==begin update_terminal; ready_already:=0; if (history <> spotless) and (history <> warning_issued) then uexit(1) else uexit(0); end @= noreturn procedure jump_out; begin close_files_and_terminate; do_final_end; end; @z @x [6.82] l.1866 - halt on error? print_char("."); show_context; @y print_char("."); show_context; if (halt_on_error_p) then begin history:=fatal_error_stop; jump_out; end; @z @x [6.84] l.1904 - Implement the switch-to-editor option. line ready to be edited. But such an extension requires some system wizardry, so the present implementation simply types out the name of the file that should be edited and the relevant line number. @^system dependencies@> There is a secret `\.D' option available when the debugging routines haven't been commented~out. @^debugging@> @y line ready to be edited. We do this by calling the external procedure |call_edit| with a pointer to the filename, its length, and the line number. However, here we just set up the variables that will be used as arguments, since we don't want to do the switch-to-editor until after TeX has closed its files. @^system dependencies@> There is a secret `\.D' option available when the debugging routines haven't been commented~out. @^debugging@> @d edit_file==input_stack[base_ptr] @z @x [6.84] l.1903 - Implement the switch-to-editor option. "E": if base_ptr>0 then if input_stack[base_ptr].name_field>=256 then begin print_nl("You want to edit file "); @.You want to edit file x@> slow_print(input_stack[base_ptr].name_field); print(" at line "); print_int(line); interaction:=scroll_mode; jump_out; @y "E": if base_ptr>0 then if input_stack[base_ptr].name_field>=256 then begin edit_name_start:=str_start[edit_file.name_field]; edit_name_length:=str_start[edit_file.name_field+1] - str_start[edit_file.name_field]; edit_line:=line; jump_out; @z @x [6.93] l.2056 - Declare fatal_error as noreturn. procedure fatal_error(@!s:str_number); {prints |s|, and that's it} @y noreturn procedure fatal_error(@!s:str_number); {prints |s|, and that's it} @z @x [6.94] l.2065 - Declare overflow as noreturn. procedure overflow(@!s:str_number;@!n:integer); {stop due to finiteness} @y noreturn procedure overflow(@!s:str_number;@!n:integer); {stop due to finiteness} @z @x [6.95] l.2084 - Declare confusion as noreturn. procedure confusion(@!s:str_number); @y noreturn procedure confusion(@!s:str_number); @z % [7.104] `remainder' is a library routine on some systems, so change % its name to avoid conflicts. @x [7.104] l.2227 - avoid name conflicts with lib routine remainder() |remainder|, holds the remainder after a division. @= @y |remainder|, holds the remainder after a division. @d remainder==tex_remainder @= @z @x [7.109] l.2352 - Define glue_ratio in C. @!glue_ratio=real; {one-word representation of a glue expansion factor} @y @z % [8.110] Make it easy to change constants. Do not increase % max_quarterword without changing the memoryword structure in `texmfmem.h'. @x [8.110] l.2422 - increase |max_halfword| @d min_halfword==0 {smallest allowable value in a |halfword|} @d max_halfword==65535 {largest allowable value in a |halfword|} @y 2424 @d min_halfword==-@"FFFFFFF {smallest allowable value in a |halfword|} @d max_halfword==@"FFFFFFF {largest allowable value in a |halfword|} @z @x [8.111] l.2435 - min_halfword and max_halfword if (mem_min=max_halfword)or@| (mem_bot-mem_min>max_halfword+1) then bad:=14; @y if (mem_bot-sup_main_memory=max_halfword) then bad:=14; @z @x [8.111] l.2437 - max_font_max if (font_basemax_quarterword) then bad:=15; if font_max>font_base+256 then bad:=16; @y if (max_font_maxmax_halfword) then bad:=15; if font_max>font_base+max_font_max then bad:=16; @z @x [8.112] l.2450 - Efficiency. macros are simplified in the obvious way when |min_quarterword=0|. @^inner loop@>@^system dependencies@> @d qi(#)==#+min_quarterword {to put an |eight_bits| item into a quarterword} @d qo(#)==#-min_quarterword {to take an |eight_bits| item out of a quarterword} @d hi(#)==#+min_halfword {to put a sixteen-bit item into a halfword} @d ho(#)==#-min_halfword {to take a sixteen-bit item from a halfword} @y macros are simplified in the obvious way when |min_quarterword=0|. So they have been simplified here in the obvious way. @^inner loop@>@^system dependencies@> The \.{WEB} source for \TeX\ defines |hi(#)==#+min_halfword| which can be simplified when |min_halfword=0|. The Web2C implementation of \TeX\ can use |hi(#)==#| together with |min_halfword<0| as long as |max_halfword| is sufficiently large. @d qi(#)==# {to put an |eight_bits| item into a quarterword} @d qo(#)==# {to take an |eight_bits| item from a quarterword} @d hi(#)==# {to put a sixteen-bit item into a halfword} @d ho(#)==# {to take a sixteen-bit item from a halfword} @z % [8.113] We've put the memory structure into the include file % `texmf.h', since it's too hard to translate automatically. @x [8.113] l.2453 - data structures for main memory @!quarterword = min_quarterword..max_quarterword; {1/4 of a word} @!halfword=min_halfword..max_halfword; {1/2 of a word} @!two_choices = 1..2; {used when there are two variants in a record} @!four_choices = 1..4; {used when there are four variants in a record} @!two_halves = packed record@;@/ @!rh:halfword; case two_choices of 1: (@!lh:halfword); 2: (@!b0:quarterword; @!b1:quarterword); end; @!four_quarters = packed record@;@/ @!b0:quarterword; @!b1:quarterword; @!b2:quarterword; @!b3:quarterword; end; @!memory_word = record@;@/ case four_choices of 1: (@!int:integer); 2: (@!gr:glue_ratio); 3: (@!hh:two_halves); 4: (@!qqqq:four_quarters); end; @y @!quarterword = min_quarterword..max_quarterword; @!halfword = min_halfword..max_halfword; @!two_choices = 1..2; {used when there are two variants in a record} @!four_choices = 1..4; {used when there are four variants in a record} @=#include "texmfmem.h";@> @z % [9.116] Change `mem' to `zmem', so we can define mem to be a register % pointer to the memory array for speed. @x [9.116] l.2545 - definition of main memory array @!mem : array[mem_min..mem_max] of memory_word; {the big dynamic storage area} @y @!yzmem : ^memory_word; {the big dynamic storage area} @!zmem : ^memory_word; {the big dynamic storage area} @z @x [10.144] l.3006 - font numbers can be >255 now. @p function new_ligature(@!f,@!c:quarterword; @!q:pointer):pointer; @y @p function new_ligature(@!f:internal_font_number; @!c:quarterword; @!q:pointer):pointer; @z % [11.165] Fix the word `free' so that it doesn't conflict with the % standard C library routine of the same name. @x [11.165] l.3364 - avoid conflict with lib function free() are debugging.) @y are debugging.) @d free==free_arr @z @x [11.165] l.3367 - dummy |free| and |was_free| arrays @!debug @!free: packed array [mem_min..mem_max] of boolean; {free cells} @t\hskip10pt@>@!was_free: packed array [mem_min..mem_max] of boolean; @y {The debug memory arrays have not been mallocated yet.} @!debug @!free: packed array [0..9] of boolean; {free cells} @t\hskip10pt@>@!was_free: packed array [0..9] of boolean; @z @x [12.174] l.3526 - Eliminate unsigned comparisons to zero. begin if (font(p)font_max) then @y begin if (font(p)>font_max) then @z @x [12.176] l.3563 - Eliminate unsigned comparisons to zero. @p procedure print_font_and_char(@!p:integer); {prints |char_node| data} begin if p>mem_end then print_esc("CLOBBERED.") else begin if (font(p)font_max) then print_char("*") @y @p procedure print_font_and_char(@!p:integer); {prints |char_node| data} begin if p>mem_end then print_esc("CLOBBERED.") else begin if (font(p)>font_max) then print_char("*") @z @x [12.186] l.3747 - Don't worry about strange floating point values. if abs(mem[p+glue_offset].int)<@'4000000 then print("?.?") else if abs(g)>float_constant(20000) then @y 3747 { The Unix |pc| folks removed this restriction with a remark that invalid bit patterns were vanishingly improbable, so we follow their example without really understanding it. |if abs(mem[p+glue_offset].int)<@'4000000 then print('?.?')| |else| } if fabs(g)>float_constant(20000) then @z @x [15.209] l.4165 - MLTeX: \charsubdef primitive @d shorthand_def=95 {code definition ( \.{\\chardef}, \.{\\countdef}, etc.~)} @y @d shorthand_def=95 {code definition ( \.{\\chardef}, \.{\\countdef}, etc.~)} {or \.{\\charsubdef}} @z % i18n fix: messages printed by print_mode in [16.211] and [46.1049] % can not be translated. For example, messages printed by |print_mode| % from [16.211] use different word order and [46.1049] use different % word order and words are declined. @x [16.211] l.4256 begin if m>0 then case m div (max_command+1) of 0:print("vertical"); 1:print("horizontal"); 2:print("display math"); end else if m=0 then print("no") else case (-m) div (max_command+1) of 0:print("internal vertical"); 1:print("restricted horizontal"); 2:print("math"); end; print(" mode"); end; @y begin if m>0 then case m div (max_command+1) of 0:print("vertical mode"); 1:print("horizontal mode"); 2:print("display math mode"); end else if m=0 then print("no mode") else case (-m) div (max_command+1) of 0:print("internal vertical mode"); 1:print("restricted horizontal mode"); 2:print("math mode"); end; end; procedure print_in_mode(@!m:integer); {prints the mode represented by |m|} begin if m>0 then case m div (max_command+1) of 0:print("' in vertical mode"); 1:print("' in horizontal mode"); 2:print("' in display math mode"); end else if m=0 then print("' in no mode") else case (-m) div (max_command+1) of 0:print("' in internal vertical mode"); 1:print("' in restricted horizontal mode"); 2:print("' in math mode"); end; end; @z @x [16.213] l.4321 - texarray @!nest:array[0..nest_size] of list_state_record; @y @!nest:^list_state_record; @z @x [16.215] l.4344 - remove mem[] reference from initialize. prev_graf:=0; shown_mode:=0; @; @y prev_graf:=0; shown_mode:=0; @/{The following piece of code is a copy of module 991:} page_contents:=empty; page_tail:=page_head; {|link(page_head):=null;|}@/ last_glue:=max_halfword; last_penalty:=0; last_kern:=0; page_depth:=0; page_max_depth:=0; @z @x [16.219] l.4409 - i18n fix print_int(nest[p].pg_field); print(" line"); if nest[p].pg_field<>1 then print_char("s"); @y print_int(nest[p].pg_field); if nest[p].pg_field<>1 then print(" lines") else print(" line"); @z @x [17.220] l.4448 - MLTeX: char_sub_code_base paragraph shape. @y paragraph shape. Additionally region~4 contains the table with ML\TeX's character substitution definitions. @z @x [17.222] l.4523 - frozen_special, for source specials. @d frozen_null_font=frozen_control_sequence+10 @y @d frozen_special=frozen_control_sequence+10 {permanent `\.{\\special}'} @d frozen_null_font=frozen_control_sequence+11 @z @x [17.222] l.4526 - max_font_max @d undefined_control_sequence=frozen_null_font+257 {dummy location} @y @d undefined_control_sequence=frozen_null_font+max_font_max+1 {dummy location} @z @x [17.222] l.4533 - hash_extra for k:=active_base to undefined_control_sequence-1 do eqtb[k]:=eqtb[undefined_control_sequence]; @y for k:=active_base to eqtb_top do eqtb[k]:=eqtb[undefined_control_sequence]; @z @x [17.230] l.4731 - MLTeX: char_sub_code_base @d int_base=math_code_base+256 {beginning of region 5} @y @d char_sub_code_base=math_code_base+256 {table of character substitutions} @d int_base=char_sub_code_base+256 {beginning of region 5} @z @x [17.230] l.4752 - MLTeX: char_sub_code_base {Note: |math_code(c)| is the true math code plus |min_halfword|} @y {Note: |math_code(c)| is the true math code plus |min_halfword|} @d char_sub_code(#)==equiv(char_sub_code_base+#) {Note: |char_sub_code(c)| is the true substitution info plus |min_halfword|} @z % MLTeX: \charsubdefmax and \tracingcharsubdef @x [17.236] l.4954 @d int_pars=55 {total number of integer parameters} @y @d tex_int_pars=55 {total number of \TeX's integer parameters} @# @d web2c_int_base=tex_int_pars {base for web2c's integer parameters} @d char_sub_def_min_code=web2c_int_base {smallest value in the charsubdef list} @d char_sub_def_max_code=web2c_int_base+1 {largest value in the charsubdef list} @d tracing_char_sub_def_code=web2c_int_base+2 {traces changes to a charsubdef def} @d web2c_int_pars=web2c_int_base+3 {total number of web2c's integer parameters} @# @d int_pars=web2c_int_pars {total number of integer parameters} @z % MLTeX: \charsubdefmax and \tracingcharsubdef @x [17.236] l.5016 @d error_context_lines==int_par(error_context_lines_code) @y @d error_context_lines==int_par(error_context_lines_code) @# @d char_sub_def_min==int_par(char_sub_def_min_code) @d char_sub_def_max==int_par(char_sub_def_max_code) @d tracing_char_sub_def==int_par(tracing_char_sub_def_code) @z % MLTeX: \charsubdefmax and \tracingcharsubdef @x [17.237] l.5080 error_context_lines_code:print_esc("errorcontextlines"); @y error_context_lines_code:print_esc("errorcontextlines"); char_sub_def_min_code:print_esc("charsubdefmin"); char_sub_def_max_code:print_esc("charsubdefmax"); tracing_char_sub_def_code:print_esc("tracingcharsubdef"); @z % MLTeX: \charsubdefmax and \tracingcharsubdef @x [17.238] l.5200 @!@:error_context_lines_}{\.{\\errorcontextlines} primitive@> @y @!@:error_context_lines_}{\.{\\errorcontextlines} primitive@> if mltex_p then begin mltex_enabled_p:=true; {enable character substitution} if false then {remove the if-clause to enable \.{\\charsubdefmin}} primitive("charsubdefmin",assign_int,int_base+char_sub_def_min_code);@/ @!@:char_sub_def_min_}{\.{\\charsubdefmin} primitive@> primitive("charsubdefmax",assign_int,int_base+char_sub_def_max_code);@/ @!@:char_sub_def_max_}{\.{\\charsubdefmax} primitive@> primitive("tracingcharsubdef",assign_int,int_base+tracing_char_sub_def_code);@/ @!@:tracing_char_sub_def_}{\.{\\tracingcharsubdef} primitive@> end; @z @x [17.240] l.5213 - MLTeX: \charsubdefmax and \tracingcharsubdef for k:=int_base to del_code_base-1 do eqtb[k].int:=0; @y for k:=int_base to del_code_base-1 do eqtb[k].int:=0; char_sub_def_min:=256; char_sub_def_max:=-1; {allow \.{\\charsubdef} for char 0}@/ {|tracing_char_sub_def:=0| is already done}@/ @z @x [17.241] l.5219 - Do `fix_date_and_time' in C. @ The following procedure, which is called just before \TeX\ initializes its input and output, establishes the initial values of the date and time. @^system dependencies@> Since standard \PASCAL\ cannot provide such information, something special is needed. The program here simply assumes that suitable values appear in the global variables \\{sys\_time}, \\{sys\_day}, \\{sys\_month}, and \\{sys\_year} (which are initialized to noon on 4 July 1776, in case the implementor is careless). @p procedure fix_date_and_time; begin sys_time:=12*60; sys_day:=4; sys_month:=7; sys_year:=1776; {self-evident truths} @y @ The following procedure, which is called just before \TeX\ initializes its input and output, establishes the initial values of the date and time. It calls a |date_and_time| C macro (a.k.a.\ |dateandtime|), which calls the C function |get_date_and_time|, passing it the addresses of |sys_time|, etc., so they can be set by the routine. |get_date_and_time| also sets up interrupt catching if that is conditionally compiled in the C code. We have to initialize the |sys_| variables because that is what gets output on the first line of the log file. (New in 2021.) @^system dependencies@> @p procedure fix_date_and_time; begin date_and_time(sys_time,sys_day,sys_month,sys_year); @z @x [17.252] l.5420 - hash_extra else if n @y else if (neqtb_size)and(n<=eqtb_top)) then @ @z @x [17.253] l.5435 - Change eqtb to zeqtb. @!eqtb:array[active_base..eqtb_size] of memory_word; @y @!zeqtb:^memory_word; @z @x [18.256] l.5483 - hash_extra @!hash: array[hash_base..undefined_control_sequence-1] of two_halves; {the hash table} @!hash_used:pointer; {allocation pointer for |hash|} @y @!hash: ^two_halves; {the hash table} @!yhash: ^two_halves; {auxiliary pointer for freeing hash} @!hash_used:pointer; {allocation pointer for |hash|} @!hash_extra:pointer; {|hash_extra=hash| above |eqtb_size|} @!hash_top:pointer; {maximum of the hash array} @!eqtb_top:pointer; {maximum of the |eqtb|} @!hash_high:pointer; {pointer to next high hash location} @z @x [18.257] l.5491 - hash_extra next(hash_base):=0; text(hash_base):=0; for k:=hash_base+1 to undefined_control_sequence-1 do hash[k]:=hash[hash_base]; @y @z @x [18.258] l.5495 - hash_extra hash_used:=frozen_control_sequence; {nothing is used} @y hash_used:=frozen_control_sequence; {nothing is used} hash_high:=0; @z @x [18.260] l.5531 - hash_extra @ @= begin if text(p)>0 then begin repeat if hash_is_full then overflow("hash size",hash_size); @:TeX capacity exceeded hash size}{\quad hash size@> decr(hash_used); until text(hash_used)=0; {search for an empty location in |hash|} next(p):=hash_used; p:=hash_used; end; @y @ @= begin if text(p)>0 then begin if hash_high decr(hash_used); until text(hash_used)=0; {search for an empty location in |hash|} next(p):=hash_used; p:=hash_used; end; end; @z @x [18.262] l.5583 - hash_extra else if p>=undefined_control_sequence then print_esc("IMPOSSIBLE.") @y else if ((p>=undefined_control_sequence)and(p<=eqtb_size))or(p>eqtb_top) then print_esc("IMPOSSIBLE.") @z @x [18.262] l.5584 - Remove more unsigned comparisons to zero. else if (text(p)<0)or(text(p)>=str_ptr) then print_esc("NONEXISTENT.") @y else if (text(p)>=str_ptr) then print_esc("NONEXISTENT.") @z @x [19.271] l.5872 - texarray @!save_stack : array[0..save_size] of memory_word; @y @!save_stack : ^memory_word; @z @x [19.283] l.6050 - hash_extra if peqtb_size) then @z @x [20.290] l.6158 - hash_extra if cs_token_flag+undefined_control_sequence>max_halfword then bad:=21; @y if cs_token_flag+eqtb_size+hash_extra>max_halfword then bad:=21; if (hash_offset<0)or(hash_offset>hash_base) then bad:=42; @z @x [22.301] l.6432 - texarray @!input_stack : array[0..stack_size] of in_state_record; @y @!input_stack : ^in_state_record; @z @x [22.304] l.6536 - texarray; additions for file:line:error style. @!input_file : array[1..max_in_open] of alpha_file; @!line : integer; {current line number in the current source file} @!line_stack : array[1..max_in_open] of integer; @y @!input_file : ^alpha_file; @!line : integer; {current line number in the current source file} @!line_stack : ^integer; @!source_filename_stack : ^str_number; @!full_source_filename_stack : ^str_number; @z @x [22.306] l.6855 - i18n fix begin print_nl("Runaway "); @.Runaway...@> case scanner_status of defining: begin print("definition"); p:=def_ref; end; matching: begin print("argument"); p:=temp_head; end; aligning: begin print("preamble"); p:=hold_head; end; absorbing: begin print("text"); p:=def_ref; end; end; {there are no other cases} @y begin @.Runaway...@> case scanner_status of defining: begin print_nl("Runaway definition"); p:=def_ref; end; matching: begin print_nl("Runaway argument"); p:=temp_head; end; aligning: begin print_nl("Runaway preamble"); p:=hold_head; end; absorbing: begin print_nl("Runaway text"); p:=def_ref; end; end; {there are no other cases} @z @x [22.308] l.6701 - texarray @!param_stack:array [0..param_size] of pointer; {token list pointers for parameters} @y @!param_stack: ^pointer; {token list pointers for parameters} @z @x [23.328] l.7043 - keep top of source_filename_stack initialized incr(in_open); push_input; index:=in_open; @y incr(in_open); push_input; index:=in_open; source_filename_stack[index]:=0;full_source_filename_stack[index]:=0; @z @x [23.331] l.7071 - init source file name stacks begin input_ptr:=0; max_in_stack:=0; @y begin input_ptr:=0; max_in_stack:=0; source_filename_stack[0]:=0;full_source_filename_stack[0]:=0; @z @x [24.338] l.7164 - i18n fix print(" while scanning "); @y @z @x [24.339] l.7185 - i18n fix defining:begin print("definition"); info(p):=right_brace_token+"}"; end; matching:begin print("use"); info(p):=par_token; long_state:=outer_call; end; aligning:begin print("preamble"); info(p):=right_brace_token+"}"; q:=p; p:=get_avail; link(p):=q; info(p):=cs_token_flag+frozen_cr; align_state:=-1000000; end; absorbing:begin print("text"); info(p):=right_brace_token+"}"; @y defining:begin print(" while scanning definition"); info(p):=right_brace_token+"}"; end; matching:begin print(" while scanning use"); info(p):=par_token; long_state:=outer_call; end; aligning:begin print(" while scanning preamble"); info(p):=right_brace_token+"}"; q:=p; p:=get_avail; link(p):=q; info(p):=cs_token_flag+frozen_cr; align_state:=-1000000; end; absorbing:begin print(" while scanning text"); info(p):=right_brace_token+"}"; @z @x [25.366] begin cv_backup:=cur_val; cvl_backup:=cur_val_level; radix_backup:=radix; @y begin incr(expand_depth_count); if expand_depth_count>=expand_depth then overflow("expansion depth",expand_depth); cv_backup:=cur_val; cvl_backup:=cur_val_level; radix_backup:=radix; @z @x [25.366] cur_order:=co_backup; link(backup_head):=backup_backup; @y cur_order:=co_backup; link(backup_head):=backup_backup; decr(expand_depth_count); @z @x [27.484] set limit when fatal_error else fatal_error("*** (cannot \read from terminal in nonstop modes)") @y else begin limit:=0; fatal_error("*** (cannot \read from terminal in nonstop modes)"); end @z @x [28.501] l.9747 - \eof18 if_eof_code: begin scan_four_bit_int; b:=(read_open[cur_val]=closed); end; @y if_eof_code: begin scan_four_bit_int_or_18; if cur_val=18 then b:=not shellenabledp else b:=(read_open[cur_val]=closed); end; @z @x [29.513] l.9951 - Area and extension rules for filenames. @ The file names we shall deal with for illustrative purposes have the following structure: If the name contains `\.>' or `\.:', the file area consists of all characters up to and including the final such character; otherwise the file area is null. If the remaining file name contains `\..', the file extension consists of all such characters from the first remaining `\..' to the end, otherwise the file extension is null. @y @ The file names we shall deal with have the following structure: If the name contains `\./' or `\.:' (for Amiga only), the file area consists of all characters up to and including the final such character; otherwise the file area is null. If the remaining file name contains `\..', the file extension consists of all such characters from the last `\..' to the end, otherwise the file extension is null. @z @x [29.513] l.9963 - Area and extension rules for filenames. @!area_delimiter:pool_pointer; {the most recent `\.>' or `\.:', if any} @!ext_delimiter:pool_pointer; {the relevant `\..', if any} @y @!area_delimiter:pool_pointer; {the most recent `\./', if any} @!ext_delimiter:pool_pointer; {the most recent `\..', if any} @z @x [29.514] l.9973 - TeX area directories. @d TEX_area=="TeXinputs:" @.TeXinputs@> @d TEX_font_area=="TeXfonts:" @.TeXfonts@> @y In C, the default paths are specified separately. @z @x [29.515] l.9995 - filenames: quoted begin area_delimiter:=0; ext_delimiter:=0; @y begin area_delimiter:=0; ext_delimiter:=0; quoted_filename:=false; @z @x [29.516] l.9992 - filenames: more_name begin if c=" " then more_name:=false @y begin if (c=" ") and stop_at_space and (not quoted_filename) then more_name:=false else if c="""" then begin quoted_filename:=not quoted_filename; more_name:=true; end @z @x [29.516] l.9994 - filenames: more_name if (c=">")or(c=":") then @y if IS_DIR_SEP(c) then @z @x [29.516] l.9997 - filenames: more_name else if (c=".")and(ext_delimiter=0) then ext_delimiter:=cur_length; @y else if c="." then ext_delimiter:=cur_length; @z @x [29.517] l.10002 - end_name: string recycling @ The third. @^system dependencies@> @p procedure end_name; @y @ The third. @^system dependencies@> If a string is already in the string pool, the function |slow_make_string| does not create a new string but returns this string number, thus saving string space. Because of this new property of the returned string number it is not possible to apply |flush_string| to these strings. @p procedure end_name; var temp_str: str_number; {result of file name cache lookups} @!j,@!s,@!t: pool_pointer; {running indices} @!must_quote:boolean; {whether we need to quote a string} @z @x [29.517] l.10022 - end_name: spaces in filenames @:TeX capacity exceeded number of strings}{\quad number of strings@> @y @:TeX capacity exceeded number of strings}{\quad number of strings@> str_room(6); {Room for quotes, if needed.} {add quotes if needed} if area_delimiter<>0 then begin {maybe quote |cur_area|} must_quote:=false; s:=str_start[str_ptr]; t:=str_start[str_ptr]+area_delimiter; j:=s; while (not must_quote) and (j0 then ext_delimiter:=ext_delimiter+2; area_delimiter:=area_delimiter+2; pool_ptr:=pool_ptr+2; end; end; {maybe quote |cur_name|} s:=str_start[str_ptr]+area_delimiter; if ext_delimiter=0 then t:=pool_ptr else t:=str_start[str_ptr]+ext_delimiter-1; must_quote:=false; j:=s; while (not must_quote) and (j0 then ext_delimiter:=ext_delimiter+2; pool_ptr:=pool_ptr+2; end; if ext_delimiter<>0 then begin {maybe quote |cur_ext|} s:=str_start[str_ptr]+ext_delimiter-1; t:=pool_ptr; must_quote:=false; j:=s; while (not must_quote) and (j0 then begin cur_area:=temp_str; decr(str_ptr); {no |flush_string|, |pool_ptr| will be wrong!} for j:=str_start[str_ptr+1] to pool_ptr-1 do begin str_pool[j-area_delimiter]:=str_pool[j]; end; pool_ptr:=pool_ptr-area_delimiter; {update |pool_ptr|} end; end; if ext_delimiter=0 then begin cur_ext:=""; cur_name:=slow_make_string; @z @x [29.517] l.10016 - end_name: string recycling incr(str_ptr); cur_ext:=make_string; @y incr(str_ptr); cur_ext:=make_string; decr(str_ptr); {undo extension string to look at name part} temp_str:=search_string(cur_name); if temp_str>0 then begin cur_name:=temp_str; decr(str_ptr); {no |flush_string|, |pool_ptr| will be wrong!} for j:=str_start[str_ptr+1] to pool_ptr-1 do begin str_pool[j-ext_delimiter+area_delimiter+1]:=str_pool[j]; end; pool_ptr:=pool_ptr-ext_delimiter+area_delimiter+1; {update |pool_ptr|} end; cur_ext:=slow_make_string; {remake extension string} @z @x [29.518] l.10042 - print_file_name: quote if spaces in names. some operating systems put the file area last instead of first.) @^system dependencies@> @y some operating systems put the file area last instead of first.) @^system dependencies@> @d check_quoted(#) == {check if string |#| needs quoting} if #<>0 then begin j:=str_start[#]; while (not must_quote) and (j0 then for j:=str_start[#] to str_start[#+1]-1 do if so(str_pool[j])<>"""" then print(so(str_pool[j])) @z @x [29.518] l.10042 - print_file_name: quote if spaces in names. begin slow_print(a); slow_print(n); slow_print(e); @y var must_quote: boolean; {whether to quote the filename} @!j:pool_pointer; {index into |str_pool|} begin must_quote:=false; check_quoted(a); check_quoted(n); check_quoted(e); {FIXME: Alternative is to assume that any filename that has to be quoted has at least one quoted component...if we pick this, a number of insertions of |print_file_name| should go away. |must_quote|:=((|a|<>0)and(|str_pool|[|str_start|[|a|]]=""""))or ((|n|<>0)and(|str_pool|[|str_start|[|n|]]=""""))or ((|e|<>0)and(|str_pool|[|str_start|[|e|]]=""""));} if must_quote then print_char(""""); print_quoted(a); print_quoted(n); print_quoted(e); if must_quote then print_char(""""); @z @x [29.519] l.10051 - have append_to_name skip quotes. @d append_to_name(#)==begin c:=#; incr(k); if k<=file_name_size then name_of_file[k]:=xchr[c]; end @y @d append_to_name(#)==begin c:=#; if not (c="""") then begin incr(k); if k<=file_name_size then name_of_file[k]:=xchr[c]; end end @z % [29.519] In pack_file_name, leave room for the extra null we append at % the end of a filename. @x [29.519] l.10047 - pack_file_name, leave room for the extra null begin k:=0; @y begin k:=0; if name_of_file then libc_free (name_of_file); name_of_file:= xmalloc_array (ASCII_code, length(a)+length(n)+length(e)+1); @z @x [29.519] l.10051 - pack_file_name, append the extra null for k:=name_length+1 to file_name_size do name_of_file[k]:=' '; @y name_of_file[name_length+1]:=0; @z @x [29.520] l.10060 - filenames: default format. @d format_default_length=20 {length of the |TEX_format_default| string} @d format_area_length=11 {length of its area part} @d format_ext_length=4 {length of its `\.{.fmt}' part} @y Under {\mc UNIX} we don't give the area part, instead depending on the path searching that will happen during file opening. Also, the length will be set in the main program. @d format_area_length=0 {length of its area part} @d format_ext_length=4 {length of its `\.{.fmt}' part} @z @x [29.521] l.10066 - filenames: default format, where `plain.fmt' is. @!TEX_format_default:packed array[1..format_default_length] of char; @ @= TEX_format_default:='TeXformats:plain.fmt'; @y @!format_default_length: integer; @!TEX_format_default: cstring; @ We set the name of the default format file and the length of that name in C, instead of Pascal, since we want them to depend on the name of the program. @z @x [29.523] l.10095 - Change to pack_buffered_name as with pack_file_name. for j:=1 to n do append_to_name(xord[TEX_format_default[j]]); for j:=a to b do append_to_name(buffer[j]); for j:=format_default_length-format_ext_length+1 to format_default_length do append_to_name(xord[TEX_format_default[j]]); if k<=file_name_size then name_length:=k@+else name_length:=file_name_size; for k:=name_length+1 to file_name_size do name_of_file[k]:=' '; @y if name_of_file then libc_free (name_of_file); name_of_file := xmalloc_array (ASCII_code, n+(b-a+1)+format_ext_length+1); for j:=1 to n do append_to_name(xord[ucharcast(TEX_format_default[j])]); for j:=a to b do append_to_name(buffer[j]); for j:=format_default_length-format_ext_length+1 to format_default_length do append_to_name(xord[ucharcast(TEX_format_default[j])]); if k<=file_name_size then name_length:=k@+else name_length:=file_name_size; name_of_file[name_length+1]:=0; @z @x [29.524] l.10118 - Format file opening: only try once, with path searching. pack_buffered_name(0,loc,j-1); {try first without the system file area} if w_open_in(fmt_file) then goto found; pack_buffered_name(format_area_length,loc,j-1); {now try the system format file area} if w_open_in(fmt_file) then goto found; @y pack_buffered_name(0,loc,j-1); {Kpathsea does everything} if w_open_in(fmt_file) then goto found; @z @x [29.524] l.10124 - replace `PLAIN' in error messages with `default'. wterm_ln('Sorry, I can''t find that format;',' will try PLAIN.'); @y wterm ('Sorry, I can''t find the format `'); fputs (stringcast(name_of_file + 1), stdout); wterm ('''; will try `'); fputs (TEX_format_default + 1, stdout); wterm_ln ('''.'); @z @x [29.524] l.10132 - replace `PLAIN' in error messages with `default'. wterm_ln('I can''t find the PLAIN format file!'); @.I can't find PLAIN...@> @y wterm ('I can''t find the format file `'); fputs (TEX_format_default + 1, stdout); wterm_ln ('''!'); @.I can't find the format...@> @z @x [29.525] l.10170 - make_name_string begin if (pool_ptr+name_length>pool_size)or(str_ptr=max_strings)or @y save_area_delimiter, save_ext_delimiter: pool_pointer; save_name_in_progress, save_stop_at_space: boolean; begin if (pool_ptr+name_length>pool_size)or(str_ptr=max_strings)or @z @x [29.525] l.10174 - make_name_string make_name_string:=make_string; @y make_name_string:=make_string; {At this point we also set |cur_name|, |cur_ext|, and |cur_area| to match the contents of |name_of_file|.} save_area_delimiter:=area_delimiter; save_ext_delimiter:=ext_delimiter; save_name_in_progress:=name_in_progress; save_stop_at_space:=stop_at_space; name_in_progress:=true; begin_name; stop_at_space:=false; k:=1; while (k<=name_length)and(more_name(name_of_file[k])) do incr(k); stop_at_space:=save_stop_at_space; end_name; name_in_progress:=save_name_in_progress; area_delimiter:=save_area_delimiter; ext_delimiter:=save_ext_delimiter; @z @x [29.526] l.10193 - look for a left_brace when scanning a file name @p procedure scan_file_name; label done; @y @p procedure scan_file_name; label done; var @!save_warning_index: pointer; begin save_warning_index := warning_index; warning_index := cur_cs; {store |cur_cs| here to remember until later} @; {here the program expands tokens and removes spaces and \.{\\relax}es from the input. The \.{\\relax} removal follows LuaTeX''s implementation, and other cases of balanced text scanning.} back_input; {return the last token to be read by either code path} if cur_cmd=left_brace then scan_file_name_braced else @z @x [29.526] l.10194 - stop scanning file name if we're at end-of-line. if not more_name(cur_chr) then goto done; @y {If |cur_chr| is a space and we're not scanning a token list, check whether we're at the end of the buffer. Otherwise we end up adding spurious spaces to file names in some cases.} if (cur_chr=" ") and (state<>token_list) and (loc>limit) then goto done; if not more_name(cur_chr) then goto done; @z @x [29.526] l.10203 - scan a bgroup/egroup-delimited file name done: end_name; name_in_progress:=false; end; @y end; done: end_name; name_in_progress:=false; warning_index := save_warning_index; {restore |warning_index|} end; @z @x [29.530] l.10245 - prompt_file_name: prevent empty filenames. var k:0..buf_size; {index into |buffer|} @y var k:0..buf_size; {index into |buffer|} @!saved_cur_name:str_number; {to catch empty terminal input} @!saved_cur_ext:str_number; {to catch empty terminal input} @!saved_cur_area:str_number; {to catch empty terminal input} @z @x [29.530] l.10252 - prompt_file_name: No default extension is TeX input file. if e=".tex" then show_context; @y if (e=".tex") or (e="") then show_context; print_ln; print_c_string(prompt_file_name_help_msg); if (e<>"") then begin print("; default file extension is `"); print(e); print("'"); end; print(")"); print_ln; @z @x [29.530] l.10258 - prompt_file_name: prevent empty filenames. clear_terminal; prompt_input(": "); @; if cur_ext="" then cur_ext:=e; @y saved_cur_name:=cur_name; saved_cur_ext:=cur_ext; saved_cur_area:=cur_area; clear_terminal; prompt_input(": "); @; if (length(cur_name)=0) and (cur_ext="") and (cur_area="") then begin cur_name:=saved_cur_name; cur_ext:=saved_cur_ext; cur_area:=saved_cur_area; end else if cur_ext="" then cur_ext:=e; @z @x [29.532] l.10263 - avoid conflict, `logname' in on some systems. @d ensure_dvi_open==if output_file_name=0 then @y @d log_name == texmf_log_name @d ensure_dvi_open==if output_file_name=0 then @z @x [29.534] l.10285 - Adjust for C string conventions. @!months:packed array [1..36] of char; {abbreviations of month names} @y @!months:const_cstring; @z @x [29.534] l.10300 - Filename change for the recorder. if job_name=0 then job_name:="texput"; @.texput@> @y if job_name=0 then job_name:=get_job_name("texput"); @.texput@> pack_job_name(".fls"); recorder_change_filename(stringcast(name_of_file+1)); @z @x [29.534] l.10293 - MLTeX: add MLTeX banner after loading fmt file @; @y @; if mltex_enabled_p then begin wlog_cr; wlog('MLTeX v2.2 enabled'); end; @z @x begin wlog(banner); @y begin if src_specials_p or file_line_error_style_p or parse_first_line_p then wlog(banner_k) else wlog(banner); @z @x [29.536] l.10324 - Print rest of banner. slow_print(format_ident); print(" "); @y wlog(version_string); slow_print(format_ident); print(" "); @z @x [29.536] l.10327 - Adjust for C string conventions. months:='JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC'; @y months := ' JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC'; @z % Print whether we're using src-specials and other such features. % Print TCX name if one's given. @x [29.536] l.10331 end @y if shellenabledp then begin wlog_cr; wlog(' '); if restrictedshell then begin wlog('restricted '); end; wlog('\write18 enabled.') end; if src_specials_p then begin wlog_cr; wlog(' Source specials enabled.') end; if file_line_error_style_p then begin wlog_cr; wlog(' file:line:error style messages enabled.') end; if parse_first_line_p then begin wlog_cr; wlog(' %&-line parsing enabled.'); end; if translate_filename then begin wlog_cr; wlog(' ('); fputs(translate_filename, log_file); wlog(')'); end; end @z % [29.537] Use a path when calling a_open_in to do a \input; also, try % to open the file with and without the `.tex' extension, regardless of % whether the file already has an extension. This allows filenames like % `foo' and `foo.bar.tex', as well as `foo.tex' and `foo.bar'. @x [29.537] l.10338 - start_input begin scan_file_name; {set |cur_name| to desired file name} if cur_ext="" then cur_ext:=".tex"; pack_cur_name; loop@+ begin begin_file_reading; {set up |cur_file| and new level of input} if a_open_in(cur_file) then goto done; if cur_area="" then begin pack_file_name(cur_name,TEX_area,cur_ext); if a_open_in(cur_file) then goto done; end; @y var temp_str: str_number; begin scan_file_name; {set |cur_name| to desired file name} pack_cur_name; loop@+begin begin_file_reading; {set up |cur_file| and new level of input} tex_input_type := 1; {Tell |open_input| we are \.{\\input}.} {Kpathsea tries all the various ways to get the file.} if kpse_in_name_ok(stringcast(name_of_file+1)) and a_open_in(cur_file, kpse_tex_format) then goto done; @z @x [29.537] l.10348 - start_input: don't force ".tex" extension. prompt_file_name("input file name",".tex"); @y prompt_file_name("input file name",""); @z @x [29.537] l.10350 - start_input: string recycling done: name:=a_make_name_string(cur_file); @y done: name:=a_make_name_string(cur_file); source_filename_stack[in_open]:=name; full_source_filename_stack[in_open]:=make_full_name_string; if name=str_ptr-1 then {we can try to conserve string pool space now} begin temp_str:=search_string(name); if temp_str>0 then begin name:=temp_str; flush_string; end; end; @z @x [29.537] l.10352 - start_input: was job_name given on the command line? begin job_name:=cur_name; open_log_file; @y begin job_name:=get_job_name(cur_name); open_log_file; @z @x [29.537] l.10356 - if term_offset+length(name)>max_print_line-2 then print_ln else if (term_offset>0)or(file_offset>0) then print_char(" "); print_char("("); incr(open_parens); slow_print(name); update_terminal; @y if term_offset+length(full_source_filename_stack[in_open])>max_print_line-2 then print_ln else if (term_offset>0)or(file_offset>0) then print_char(" "); print_char("("); incr(open_parens); slow_print(full_source_filename_stack[in_open]); update_terminal; @z @x [29.537] l.10360 - start_input: don't return filename to string pool. if name=str_ptr-1 then {conserve string pool space (but see note above)} begin flush_string; name:=cur_name; end; @y @z @x [30.548] l.10673 - texarray @!internal_font_number=font_base..font_max; {|font| in a |char_node|} @!font_index=0..font_mem_size; {index into |font_info|} @y @!internal_font_number=integer; {|font| in a |char_node|} @!font_index=integer; {index into |font_info|} @!nine_bits=min_quarterword..non_char; @z @x [30.549] l.10682 - texarray @!font_info:array[font_index] of memory_word; {the big collection of font data} @!fmem_ptr:font_index; {first unused word of |font_info|} @!font_ptr:internal_font_number; {largest internal font number in use} @!font_check:array[internal_font_number] of four_quarters; {check sum} @!font_size:array[internal_font_number] of scaled; {``at'' size} @!font_dsize:array[internal_font_number] of scaled; {``design'' size} @!font_params:array[internal_font_number] of font_index; {how many font parameters are present} @!font_name:array[internal_font_number] of str_number; {name of the font} @!font_area:array[internal_font_number] of str_number; {area of the font} @!font_bc:array[internal_font_number] of eight_bits; {beginning (smallest) character code} @!font_ec:array[internal_font_number] of eight_bits; {ending (largest) character code} @!font_glue:array[internal_font_number] of pointer; {glue specification for interword space, |null| if not allocated} @!font_used:array[internal_font_number] of boolean; {has a character from this font actually appeared in the output?} @!hyphen_char:array[internal_font_number] of integer; {current \.{\\hyphenchar} values} @!skew_char:array[internal_font_number] of integer; {current \.{\\skewchar} values} @!bchar_label:array[internal_font_number] of font_index; {start of |lig_kern| program for left boundary character, |non_address| if there is none} @!font_bchar:array[internal_font_number] of min_quarterword..non_char; {boundary character, |non_char| if there is none} @!font_false_bchar:array[internal_font_number] of min_quarterword..non_char; {|font_bchar| if it doesn't exist in the font, otherwise |non_char|} @y @!font_info: ^fmemory_word; {the big collection of font data} @!fmem_ptr:font_index; {first unused word of |font_info|} @!font_ptr:internal_font_number; {largest internal font number in use} @!font_check: ^four_quarters; {check sum} @!font_size: ^scaled; {``at'' size} @!font_dsize: ^scaled; {``design'' size} @!font_params: ^font_index; {how many font parameters are present} @!font_name: ^str_number; {name of the font} @!font_area: ^str_number; {area of the font} @!font_bc: ^eight_bits; {beginning (smallest) character code} @!font_ec: ^eight_bits; {ending (largest) character code} @!font_glue: ^pointer; {glue specification for interword space, |null| if not allocated} @!font_used: ^boolean; {has a character from this font actually appeared in the output?} @!hyphen_char: ^integer; {current \.{\\hyphenchar} values} @!skew_char: ^integer; {current \.{\\skewchar} values} @!bchar_label: ^font_index; {start of |lig_kern| program for left boundary character, |non_address| if there is none} @!font_bchar: ^nine_bits; {boundary character, |non_char| if there is none} @!font_false_bchar: ^nine_bits; {|font_bchar| if it doesn't exist in the font, otherwise |non_char|} @z @x [30.550] l.10723 - texarray @!char_base:array[internal_font_number] of integer; {base addresses for |char_info|} @!width_base:array[internal_font_number] of integer; {base addresses for widths} @!height_base:array[internal_font_number] of integer; {base addresses for heights} @!depth_base:array[internal_font_number] of integer; {base addresses for depths} @!italic_base:array[internal_font_number] of integer; {base addresses for italic corrections} @!lig_kern_base:array[internal_font_number] of integer; {base addresses for ligature/kerning programs} @!kern_base:array[internal_font_number] of integer; {base addresses for kerns} @!exten_base:array[internal_font_number] of integer; {base addresses for extensible recipes} @!param_base:array[internal_font_number] of integer; {base addresses for font parameters} @y @!char_base: ^integer; {base addresses for |char_info|} @!width_base: ^integer; {base addresses for widths} @!height_base: ^integer; {base addresses for heights} @!depth_base: ^integer; {base addresses for depths} @!italic_base: ^integer; {base addresses for italic corrections} @!lig_kern_base: ^integer; {base addresses for ligature/kerning programs} @!kern_base: ^integer; {base addresses for kerns} @!exten_base: ^integer; {base addresses for extensible recipes} @!param_base: ^integer; {base addresses for font parameters} @z @x [30.551] l.10743 - texarray for k:=font_base to font_max do font_used[k]:=false; @y @z @x [30.552] l.10749 - texarray font_ptr:=null_font; fmem_ptr:=7; font_name[null_font]:="nullfont"; font_area[null_font]:=""; hyphen_char[null_font]:="-"; skew_char[null_font]:=-1; bchar_label[null_font]:=non_address; font_bchar[null_font]:=non_char; font_false_bchar[null_font]:=non_char; font_bc[null_font]:=1; font_ec[null_font]:=0; font_size[null_font]:=0; font_dsize[null_font]:=0; char_base[null_font]:=0; width_base[null_font]:=0; height_base[null_font]:=0; depth_base[null_font]:=0; italic_base[null_font]:=0; lig_kern_base[null_font]:=0; kern_base[null_font]:=0; exten_base[null_font]:=0; font_glue[null_font]:=null; font_params[null_font]:=7; param_base[null_font]:=-1; for k:=0 to 6 do font_info[k].sc:=0; @y @z @x [30.554] l.10795 - MLTeX: |effective_char| in |char_info| as fast as possible under the circumstances. @^inner loop@> @d char_info_end(#)==#].qqqq @d char_info(#)==font_info[char_base[#]+char_info_end @y as fast as possible under the circumstances. @^inner loop@> ML\TeX{} will assume that a character |c| exists iff either exists in the current font or a character substitution definition for this character was defined using \.{\\charsubdef}. To avoid the distinction between these two cases, ML\TeX{} introduces the notion ``effective character'' of an input character |c|. If |c| exists in the current font, the effective character of |c| is the character |c| itself. If it doesn't exist but a character substitution is defined, the effective character of |c| is the base character defined in the character substitution. If there is an effective character for a non-existing character |c|, the ``virtual character'' |c| will get appended to the horizontal lists. The effective character is used within |char_info| to access appropriate character descriptions in the font. For example, when calculating the width of a box, ML\TeX{} will use the metrics of the effective characters. For the case of a substitution, ML\TeX{} uses the metrics of the base character, ignoring the metrics of the accent character. If character substitutions are changed, it will be possible that a character |c| neither exists in a font nor there is a valid character substitution for |c|. To handle these cases |effective_char| should be called with its first argument set to |true| to ensure that it will still return an existing character in the font. If neither |c| nor the substituted base character in the current character substitution exists, |effective_char| will output a warning and return the character |font_bc[f]| (which is incorrect, but can not be changed within the current framework). Sometimes character substitutions are unwanted, therefore the original definition of |char_info| can be used using the macro |orig_char_info|. Operations in which character substitutions should be avoided are, for example, loading a new font and checking the font metric information in this font, and character accesses in math mode. @d char_list_exists(#)==(char_sub_code(#)>hi(0)) @d char_list_accent(#)==(ho(char_sub_code(#)) div 256) @d char_list_char(#)==(ho(char_sub_code(#)) mod 256) @# @d char_info_end(#)== #@=)@>].qqqq @d char_info(#)== font_info[char_base[#]+effective_char@=(@>true,#,char_info_end @# @d orig_char_info_end(#)==#].qqqq @d orig_char_info(#)==font_info[char_base[#]+orig_char_info_end @# @z @x [30] m.560 l.10876 - MLTeX: |effective_char| in |char_info| @p function read_font_info(@!u:pointer;@!nom,@!aire:str_number; @y @p @t\4@>@@/ function read_font_info(@!u:pointer;@!nom,@!aire:str_number; @z @x [30.560] l.10898 - Check lengths @!file_opened:boolean; {was |tfm_file| successfully opened?} @y @!name_too_long:boolean; {|nom| or |aire| exceeds 255 bytes?} @!file_opened:boolean; {was |tfm_file| successfully opened?} @z @x [30.561] l.10939 - Check lengths else print(" not loadable: Metric (TFM) file not found"); @y else if name_too_long then print(" not loadable: Metric (TFM) file name too long") else print(" not loadable: Metric (TFM) file not found"); @z @x [30.563] l.10961 - Check lengths, don't use TEX_font_area. if aire="" then pack_file_name(nom,TEX_font_area,".tfm") else pack_file_name(nom,aire,".tfm"); @y name_too_long:=(length(nom)>255)or(length(aire)>255); if name_too_long then abort; {|kpse_find_file| will append the |".tfm"|, and avoid searching the disk before the font alias files as well.} pack_file_name(nom,aire,""); @z % [30.564] Reading the tfm file. As a special case, whenever we open a % tfm file, we read its first byte into `tfm_temp' right away. TeX % looks at `fbyte' before calling `fget', so it ends up seeing every % byte. This is Pascal-like I/O. @x [30.564] l.10956 - reading the tfm file, define fget & fbyte @d fget==get(tfm_file) @d fbyte==tfm_file^ @y @d fget==tfm_temp:=getc(tfm_file) @d fbyte==tfm_temp @z @x [30.570] l.11064 - MLTeX: fix for bug while loading font begin qw:=char_info(f)(d); @y begin qw:=orig_char_info(f)(d); @z @x [30.573] l.11116 - MLTeX: fix for bug while loading font qw:=char_info(f)(#); {N.B.: not |qi(#)|} @y qw:=orig_char_info(f)(#); {N.B.: not |qi(#)|} @z % [30.575] We only want `eof' on the TFM file to be true if we % previously had EOF, not if we're at EOF now. This is like `feof', and % unlike our implementation of `eof' elsewhere. @x [30.575] l.11180 - Reading the tfm file, replace eof() by feof(). if eof(tfm_file) then abort; @y if feof(tfm_file) then abort; @z @x [30.576] l.11180 - MLTeX: fix for bug while loading font begin qw:=char_info(f)(bchar); {N.B.: not |qi(bchar)|} @y begin qw:=orig_char_info(f)(bchar); {N.B.: not |qi(bchar)|} @z @x [30.582] l.11276 - MLTeX: call |effective_char| in |new_character| @p function new_character(@!f:internal_font_number;@!c:eight_bits):pointer; label exit; var p:pointer; {newly allocated node} begin if font_bc[f]<=c then if font_ec[f]>=c then if char_exists(char_info(f)(qi(c))) then @y This allows a character node to be used if there is an equivalent in the |char_sub_code| list. @p function new_character(@!f:internal_font_number;@!c:eight_bits):pointer; label exit; var p:pointer; {newly allocated node} @!ec:quarterword; {effective character of |c|} begin ec:=effective_char(false,f,qi(c)); if font_bc[f]<=qo(ec) then if font_ec[f]>=qo(ec) then if char_exists(orig_char_info(f)(ec)) then {N.B.: not |char_info|} @z @x [32.592] l.11820 - font numbers can be >255 now. @!c,@!f:quarterword; {character and font in current |char_node|} @y {character and font in current |char_node|} @!c:quarterword; @!f:internal_font_number; @z @x [32.595] l.11860 - texarray @!dvi_buf:array[dvi_index] of eight_bits; {buffer for \.{DVI} output} @!half_buf:dvi_index; {half of |dvi_buf_size|} @!dvi_limit:dvi_index; {end of the current half buffer} @!dvi_ptr:dvi_index; {the next available buffer address} @y @!dvi_buf:^eight_bits; {buffer for \.{DVI} output} @!half_buf:integer; {half of |dvi_buf_size|} @!dvi_limit:integer; {end of the current half buffer} @!dvi_ptr:integer; {the next available buffer address} @z @x [32.597] l.11886 - write_dvi done in C. @p procedure write_dvi(@!a,@!b:dvi_index); var k:dvi_index; begin for k:=a to b do write(dvi_file,dvi_buf[k]); end; @y In C, we use a macro to call |fwrite| or |write| directly, writing all the bytes in one shot. Much better even than writing four bytes at a time. @z @x [32.601] l.11911 - check dvi file size each time, we use the macro |dvi_out|. @y each time, we use the macro |dvi_out|. The length of |dvi_file| should not exceed |@"7FFFFFFF|; we set |cur_s:=-2| to prevent further \.{DVI} output causing infinite recursion. @z @x [32.601] l.11918 - dvi_swap: check dvi file size begin if dvi_limit=dvi_buf_size then @y begin if dvi_ptr>(@"7FFFFFFF-dvi_offset) then begin cur_s:=-2; fatal_error("dvi length exceeds ""7FFFFFFF"); @.dvi length exceeds...@> end; if dvi_limit=dvi_buf_size then @z @x [32.602] l.11932 - empty the last bytes: check dvi file size if dvi_ptr>0 then write_dvi(0,dvi_ptr-1) @y if dvi_ptr>(@"7FFFFFFF-dvi_offset) then begin cur_s:=-2; fatal_error("dvi length exceeds ""7FFFFFFF"); @.dvi length exceeds...@> end; if dvi_ptr>0 then write_dvi(0,dvi_ptr-1) @z @x [32.602] l.11944 - Allow for outputting more than 256 fonts. begin dvi_out(fnt_def1); dvi_out(f-font_base-1);@/ @y begin if f<=256+font_base then begin dvi_out(fnt_def1); dvi_out(f-font_base-1); end else begin dvi_out(fnt_def1+1); dvi_out((f-font_base-1) div @'400); dvi_out((f-font_base-1) mod @'400); end; @z @x [32.617] l.12280 - Use output_comment if the user set it. Assume it's short enough. old_setting:=selector; selector:=new_string; @y if output_comment then begin l:=strlen(output_comment); dvi_out(l); for s:=0 to l-1 do dvi_out(output_comment[s]); end else begin {the default code is unchanged} old_setting:=selector; selector:=new_string; @z @x [32.617] l.12288 - Use output_comment if the user set it. end @y end; end @z @x [32.619] l.12294 - MLTeX: substitute character in |hlist_out| procedure hlist_out; {output an |hlist_node| box} label reswitch, move_past, fin_rule, next_p; @y procedure hlist_out; {output an |hlist_node| box} label reswitch, move_past, fin_rule, next_p, continue, found; @z @x [32.620] l.12326 - MLTeX: replace virtual character in |hlist_out| reaching a non-|char_node|. The program uses the fact that |set_char_0=0|. @^inner loop@> @y reaching a non-|char_node|. The program uses the fact that |set_char_0=0|. In ML\TeX{} this part looks for the existence of a substitution definition for a character |c|, if |c| does not exist in the font, and create appropriate \.{DVI} commands. Former versions of ML\TeX{} have spliced appropriate character, kern, and box nodes into the horizontal list. % % 91/05/08 \charsubdefmax bug detected by Bernd Raichle Because the user can change character substitutions or \.{\\charsubdefmax} on the fly, we have to test a again for valid substitutions. % % 93/10/29 \leaders bug detected by Eberhard Mattes (Additional it is necessary to be careful---if leaders are used the current hlist is normally traversed more than once!) @^inner loop@> @z @x [32.620] l.12334 - MLTeX: substitute character during |shipout| if c>=qi(128) then dvi_out(set1); dvi_out(qo(c));@/ cur_h:=cur_h+char_width(f)(char_info(f)(c)); @y if font_ec[f]>=qo(c) then if font_bc[f]<=qo(c) then if char_exists(orig_char_info(f)(c)) then {N.B.: not |char_info|} begin if c>=qi(128) then dvi_out(set1); dvi_out(qo(c));@/ cur_h:=cur_h+char_width(f)(orig_char_info(f)(c)); goto continue; end; if mltex_enabled_p then @; continue: @z @x [32.622] l.12349 - more >256 font output stuff. else begin dvi_out(fnt1); dvi_out(f-font_base-1); end; @y else if f<=256+font_base then begin dvi_out(fnt1); dvi_out(f-font_base-1); end else begin dvi_out(fnt1+1); dvi_out((f-font_base-1) div @'400); dvi_out((f-font_base-1) mod @'400); end; @z % We output each portion of the page as we get to it, if we are using % IPC, so that the previewer (TeXView) can display it immediately. [SPM] @x [32.640] l.12723 - IPC done: @y ifdef ('IPC') if ipc_on>0 then begin if dvi_limit=half_buf then begin write_dvi(half_buf, dvi_buf_size-1); flush_dvi; dvi_gone:=dvi_gone+half_buf; end; if dvi_ptr>(@"7FFFFFFF-dvi_offset) then begin cur_s:=-2; fatal_error("dvi length exceeds ""7FFFFFFF"); @.dvi length exceeds...@> end; if dvi_ptr>0 then begin write_dvi(0, dvi_ptr-1); flush_dvi; dvi_offset:=dvi_offset+dvi_ptr; dvi_gone:=dvi_gone+dvi_ptr; end; dvi_ptr:=0; dvi_limit:=dvi_buf_size; ipc_page(dvi_gone); end; endif ('IPC'); done: @z @x [32.645] l.12766 - check dvi file size else begin dvi_out(post); {beginning of the postamble} @y else if cur_s<>-2 then begin dvi_out(post); {beginning of the postamble} @z @x [32.645] l.12775 - Use dvi_offset instead of dvi_buf_size with IPC stuff. k:=4+((dvi_buf_size-dvi_ptr) mod 4); {the number of 223's} @y ifdef ('IPC') k:=7-((3+dvi_offset+dvi_ptr) mod 4); {the number of 223's} endif ('IPC') ifndef ('IPC') k:=4+((dvi_buf_size-dvi_ptr) mod 4); {the number of 223's} endifn ('IPC') @z @x [32.645] l.12780 - use print_file_name print_nl("Output written on "); slow_print(output_file_name); @y print_nl("Output written on "); print_file_name(0, output_file_name, 0); @z @x [32.645] l.12782 - i18n fix print(" ("); print_int(total_pages); print(" page"); if total_pages<>1 then print_char("s"); @y print(" ("); print_int(total_pages); if total_pages<>1 then print(" pages") else print(" page"); @z % The MLTeX changes never dealt with the problems of character % substitutions in math mode. With the new additions in v2.2, % non-existing characters between |font_bc[f]| and |font_ec[f]| % can be substituted => we have to avoid this in math mode % (for compatibility reasons and to avoid other problems). % @x [35.708] l.13903 - MLTeX: avoid substitution in |var_delimiter| if (qo(y)>=font_bc[g])and(qo(y)<=font_ec[g]) then begin continue: q:=char_info(g)(y); @y if (qo(y)>=font_bc[g])and(qo(y)<=font_ec[g]) then begin continue: q:=orig_char_info(g)(y); @z @x [36.722] l.14207 - MLTeX: avoid substitution in |fetch| cur_i:=char_info(cur_f)(cur_c) @y cur_i:=orig_char_info(cur_f)(cur_c) @z @x [36.740] l.14486 - MLTeX: avoid substitution in |make_math_accent| i:=char_info(f)(y); @y i:=orig_char_info(f)(y); @z @x [36.749] l.14638 - MLTeX: avoid substitution in |make_op| begin c:=rem_byte(cur_i); i:=char_info(cur_f)(c); @y begin c:=rem_byte(cur_i); i:=orig_char_info(cur_f)(c); @z % disabled in original tex-src-special.ch @x [37.774] l.15291 - source specials if every_cr<>null then begin_token_list(every_cr,every_cr_text); @y if (insert_src_special_every_cr and head<>tail) then insert_src_special; if every_cr<>null then begin_token_list(every_cr,every_cr_text); @z % disabled in original tex-source-special.ch @x [37.799] l.15682 - source specials if every_cr<>null then begin_token_list(every_cr,every_cr_text); @y if (insert_src_special_every_cr) then insert_src_special; if every_cr<>null then begin_token_list(every_cr,every_cr_text); @z @x [42.920] l.18056 - bigtrie: allow larger hyphenation tries. Comparatively few different number sequences $n_0\ldots n_k$ actually occur, since most of the |n|'s are generally zero. Therefore the number sequences are encoded in such a way that |trie_op|$(z_k)$ is only one byte long. If |trie_op(@t$z_k$@>)<>min_quarterword|, when $p_1\ldots p_k$ has matched the letters in |hc[(l-k+1)..l@,]| of language |t|, we perform all of the required operations for this pattern by carrying out the following little program: Set |v:=trie_op(@t$z_k$@>)|. Then set |v:=v+op_start[t]|, |hyf[l-hyf_distance[v]]:=@tmax@>(hyf[l-hyf_distance[v]], hyf_num[v])|, and |v:=hyf_next[v]|; repeat, if necessary, until |v=min_quarterword|. @y The theory that comparatively few different number sequences $n_0\ldots n_k$ actually occur, since most of the |n|'s are generally zero, seems to fail at least for the large German hyphenation patterns. Therefore the number sequences cannot any longer be encoded in such a way that |trie_op|$(z_k)$ is only one byte long. We have introduced a new constant |max_trie_op| for the maximum allowable hyphenation operation code value; |max_trie_op| might be different for \TeX\ and \.{INITEX} and must not exceed |max_halfword|. An opcode will occupy a halfword if |max_trie_op| exceeds |max_quarterword| or a quarterword otherwise. @^system dependencies@> If |trie_op(@t$z_k$@>)<>min_trie_op|, when $p_1\ldots p_k$ has matched the letters in |hc[(l-k+1)..l@,]| of language |t|, we perform all of the required operations for this pattern by carrying out the following little program: Set |v:=trie_op(@t$z_k$@>)|. Then set |v:=v+op_start[t]|, |hyf[l-hyf_distance[v]]:=@tmax@>(hyf[l-hyf_distance[v]], hyf_num[v])|, and |v:=hyf_next[v]|; repeat, if necessary, until |v=min_trie_op|. @z @x [42.920] l.18068 - bigtrie: allow larger hyphenation tries. @!trie_pointer=0..trie_size; {an index into |trie|} @y @!trie_pointer=0..ssup_trie_size; {an index into |trie|} @!trie_opcode=0..ssup_trie_opcode; {a trie opcode} @z @x [42.921] l.18070 - bigtrie: allow larger hyphenation tries. @ @d trie_link(#)==trie[#].rh {``downward'' link in a trie} @d trie_char(#)==trie[#].b1 {character matched at this trie location} @d trie_op(#)==trie[#].b0 {program for hyphenation at this trie location} @y @ For more than 255 trie op codes, the three fields |trie_link|, |trie_char|, and |trie_op| will no longer fit into one memory word; thus using web2c we define |trie| as three array instead of an array of records. The variant will be implemented by reusing the opcode field later on with another macro. @d trie_link(#)==trie_trl[#] {``downward'' link in a trie} @d trie_char(#)==trie_trc[#] {character matched at this trie location} @d trie_op(#)==trie_tro[#] {program for hyphenation at this trie location} @z @x [42.921] l.18075 - bigtrie: allow larger hyphenation tries. @!trie:array[trie_pointer] of two_halves; {|trie_link|, |trie_char|, |trie_op|} @y {We will dynamically allocate these arrays.} @!trie_trl:^trie_pointer; {|trie_link|} @!trie_tro:^trie_pointer; {|trie_op|} @!trie_trc:^quarterword; {|trie_char|} @z @x [42.921] l.18078 - bigtrie: allow larger hyphenation tries. @!hyf_next:array[1..trie_op_size] of quarterword; {continuation code} @y @!hyf_next:array[1..trie_op_size] of trie_opcode; {continuation code} @z @x [42.923] l.18099 - bigtrie: allow larger hyphenation tries. begin if trie_op(z)<>min_quarterword then @y begin if trie_op(z)<>min_trie_op then @z @x [42.924] l.18112 - bigtrie: allow larger hyphenation tries. until v=min_quarterword; @y until v=min_trie_op; @z %%%%%%%% dynamic hyph_size @x 18126 m.925 different from $\alpha$, we can conclude that $\alpha$ is not in the table. @y 18126 different from $\alpha$, we can conclude that $\alpha$ is not in the table. This is a clever scheme which saves the need for a hash link array. However, it is difficult to increase the size of the hyphen exception arrays. To make this easier, the ordered hash has been replaced by a simple hash, using an additional array |hyph_link|. The value |0| in |hyph_link[k]| means that there are no more entries corresponding to the specific hash chain. When |hyph_link[k]>0|, the next entry in the hash chain is |hyph_link[k]-1|. This value is used because the arrays start at |0|. @z %%%%%%%% dynamic hyph_size @x 18134 m.925 @!hyph_pointer=0..hyph_size; {an index into the ordered hash table} @y 18134 @!hyph_pointer=0..ssup_hyph_size; {index into hyphen exceptions hash table; enlarging this requires changing (un)dump code} @z %%%%%%%% dynamic hyph_size @x 18137 m.926 @!hyph_word:array[hyph_pointer] of str_number; {exception words} @!hyph_list:array[hyph_pointer] of pointer; {lists of hyphen positions} @!hyph_count:hyph_pointer; {the number of words in the exception dictionary} @y 18139 @!hyph_word: ^str_number; {exception words} @!hyph_list: ^pointer; {lists of hyphen positions} @!hyph_link: ^hyph_pointer; {link array for hyphen exceptions hash table} @!hyph_count:integer; {the number of words in the exception dictionary} @!hyph_next:integer; {next free slot in hyphen exceptions hash table} @z %%%%%%%% dynamic hyph_size @x 18145 m.928 for z:=0 to hyph_size do begin hyph_word[z]:=0; hyph_list[z]:=null; end; hyph_count:=0; @y 18148 for z:=0 to hyph_size do begin hyph_word[z]:=0; hyph_list[z]:=null; hyph_link[z]:=0; end; hyph_count:=0; hyph_next:=hyph_prime+1; if hyph_next>hyph_size then hyph_next:=hyph_prime; @z %%%%%%%% dynamic hyph_size @x 18163 m.930 h:=hc[1]; incr(hn); hc[hn]:=cur_lang; for j:=2 to hn do h:=(h+h+hc[j]) mod hyph_size; loop@+ begin @; if h>0 then decr(h)@+else h:=hyph_size; end; not_found: decr(hn) @y 18170 h:=hc[1]; incr(hn); hc[hn]:=cur_lang; for j:=2 to hn do h:=(h+h+hc[j]) mod hyph_prime; loop@+ begin @; h:=hyph_link[h]; if h=0 then goto not_found; decr(h); end; not_found: decr(hn) @z @x [42.931] l.18206 - dynamic hyph_size @ @= k:=hyph_word[h]; if k=0 then goto not_found; if length(k)= {This is now a simple hash list, not an ordered one, so the module title is no longer descriptive.} k:=hyph_word[h]; if k=0 then goto not_found; @z @x [42.931] l.18211 - dynamic hyph_size repeat if so(str_pool[u])hc[j] then goto done; @y repeat if so(str_pool[u])<>hc[j] then goto done; @z %%%%%%%% dynamic hyph_size @x 18245 m.934 @!s,@!t:str_number; {strings being compared or stored} @y @!s:str_number; {strings being compared or stored} @z %%%%%%%% dynamic hyph_size @x 18274 m.939 begin h:=(h+h+hc[j]) mod hyph_size; @y 18274 begin h:=(h+h+hc[j]) mod hyph_prime; @z %%%%%%%% dynamic hyph_size @x 18281 m.940 @ @= if hyph_count=hyph_size then overflow("exception dictionary",hyph_size); @:TeX capacity exceeded exception dictionary}{\quad exception dictionary@> incr(hyph_count); while hyph_word[h]<>0 do begin @; if h>0 then decr(h)@+else h:=hyph_size; end; hyph_word[h]:=s; hyph_list[h]:=p @y 18290 @ @= if hyph_next <= hyph_prime then while (hyph_next>0) and (hyph_word[hyph_next-1]>0) do decr(hyph_next); if (hyph_count=hyph_size)or(hyph_next=0) then overflow("exception dictionary",hyph_size); @:TeX capacity exceeded exception dictionary}{\quad exception dictionary@> incr(hyph_count); while hyph_word[h]<>0 do begin @; if hyph_link[h]=0 then begin hyph_link[h]:=hyph_next; if hyph_next >= hyph_size then hyph_next:=hyph_prime; if hyph_next > hyph_prime then incr(hyph_next); end; h:=hyph_link[h]-1; end; found: hyph_word[h]:=s; hyph_list[h]:=p @z @x [42.941] l.18326 - dynamic hyph_size @ @= k:=hyph_word[h]; if length(k)length(s) then goto not_found; @y @ @= {This is now a simple hash list, not an ordered one, so the module title is no longer descriptive.} k:=hyph_word[h]; if length(k)<>length(s) then goto not_found; @z @x [42.941] l.18331 - dynamic hyph_size repeat if str_pool[u]str_pool[v] then goto not_found; @y repeat if str_pool[u]<>str_pool[v] then goto not_found; @z @x [42.941] l.18335 - dynamic hyph_size found:q:=hyph_list[h]; hyph_list[h]:=p; p:=q;@/ t:=hyph_word[h]; hyph_word[h]:=s; s:=t; not_found: @y {repeat hyphenation exception; flushing old data} flush_string; s:=hyph_word[h]; {avoid |slow_make_string|!} decr(hyph_count); { We could also |flush_list(hyph_list[h]);|, but it interferes with \.{trip.log}. } goto found; not_found: @z @x [43.943] l.18332 - bigtrie: Larger tries, also in documentation parts. |hyf_next[@t$v^\prime$@>]=min_quarterword|. @y |hyf_next[@t$v^\prime$@>]=min_trie_op|. @z @x [43.943] l.18336 - bigtrie: Larger tries, also in documentation parts. $$\hbox{|@t$v^\prime$@>:=new_trie_op(0,1,min_quarterword)|,\qquad @y $$\hbox{|@t$v^\prime$@>:=new_trie_op(0,1,min_trie_op)|,\qquad @z @x [43.943] l.18346 - web2c can't parse negative lower bounds in arrays. Sorry. @!init @!trie_op_hash:array[-trie_op_size..trie_op_size] of 0..trie_op_size; @y @!init @!trie_op_hash:array[neg_trie_op_size..trie_op_size] of 0..trie_op_size; @z @x [43.943] l.18348 - bigtrie: Larger hyphenation tries. @!trie_used:array[ASCII_code] of quarterword; @y @!trie_used:array[ASCII_code] of trie_opcode; @z @x [43.943] l.18352 - bigtrie: Larger hyphenation tries. @!trie_op_val:array[1..trie_op_size] of quarterword; @y @!trie_op_val:array[1..trie_op_size] of trie_opcode; @z @x [43.943] l.18355 - Dynamic trie arrays tini @y tini@; @!max_op_used:trie_opcode; {largest opcode used for any language} @!small_op:boolean; {flag used while dumping or undumping} @z @x [43.944] l.18358 - bigtrie: Larger tries, also in documentation parts. |new_trie_op| could return |min_quarterword| (thereby simply ignoring @y |new_trie_op| could return |min_trie_op| (thereby simply ignoring @z @x [43.944] l.18365 - bigtrie: Larger hyphenation tries. function new_trie_op(@!d,@!n:small_number;@!v:quarterword):quarterword; label exit; var h:-trie_op_size..trie_op_size; {trial hash location} @!u:quarterword; {trial op code} @y function new_trie_op(@!d,@!n:small_number;@!v:trie_opcode):trie_opcode; label exit; var h:neg_trie_op_size..trie_op_size; {trial hash location} @!u:trie_opcode; {trial op code} @z @x [43.944] l.18370 - Another casting problem, and use |neg_trie_op_size|. begin h:=abs(n+313*d+361*v+1009*cur_lang) mod (trie_op_size+trie_op_size) - trie_op_size; @y begin h:=abs(n+313*d+361*v+1009*cur_lang) mod (trie_op_size-neg_trie_op_size) + neg_trie_op_size; @z @x [43.944] l.18377 - bigtrie: And larger tries again. if u=max_quarterword then overflow("pattern memory ops per language", max_quarterword-min_quarterword); incr(trie_op_ptr); incr(u); trie_used[cur_lang]:=u; @y if u=max_trie_op then overflow("pattern memory ops per language", max_trie_op-min_trie_op); incr(trie_op_ptr); incr(u); trie_used[cur_lang]:=u; if u>max_op_used then max_op_used:=u; @z @x [43.945] l.18399 - bigtrie: And larger tries again. op_start[0]:=-min_quarterword; @y op_start[0]:=-min_trie_op; @z @x [43.946] l.18416 - bigtrie: And larger tries again. for k:=0 to 255 do trie_used[k]:=min_quarterword; @y for k:=0 to 255 do trie_used[k]:=min_trie_op; @z @x [43.946] l.18417 - Dynamic trie arrays. trie_op_ptr:=0; @y max_op_used:=min_trie_op; trie_op_ptr:=0; @z @x [43.947] l.18438 - Dynamically allocate arrays, and a casting problem. @!init @!trie_c:packed array[trie_pointer] of packed_ASCII_code; {characters to match} @t\hskip10pt@>@!trie_o:packed array[trie_pointer] of quarterword; {operations to perform} @t\hskip10pt@>@!trie_l:packed array[trie_pointer] of trie_pointer; {left subtrie links} @t\hskip10pt@>@!trie_r:packed array[trie_pointer] of trie_pointer; {right subtrie links} @t\hskip10pt@>@!trie_ptr:trie_pointer; {the number of nodes in the trie} @t\hskip10pt@>@!trie_hash:packed array[trie_pointer] of trie_pointer; {used to identify equivalent subtries} tini @y @!init @!trie_c:^packed_ASCII_code; {characters to match} @t\hskip10pt@>@!trie_o:^trie_opcode; {operations to perform} @t\hskip10pt@>@!trie_l:^trie_pointer; {left subtrie links} @t\hskip10pt@>@!trie_r:^trie_pointer; {right subtrie links} @t\hskip10pt@>@!trie_ptr:trie_pointer; {the number of nodes in the trie} @t\hskip10pt@>@!trie_hash:^trie_pointer; {used to identify equivalent subtries} tini @z @x [43.950] l.18521 - Dynamically allocate & larger tries. @d trie_back(#)==trie[#].lh {backward links in |trie| holes} @y @d trie_back(#)==trie_tro[#] {use the opcode field now for backward links} @z @x [43.590] l.18524 - Dynamically allocate & larger tries. @!init @!trie_taken:packed array[1..trie_size] of boolean; {does a family start here?} @t\hskip10pt@>@!trie_min:array[ASCII_code] of trie_pointer; {the first possible slot for each character} @t\hskip10pt@>@!trie_max:trie_pointer; {largest location used in |trie|} @t\hskip10pt@>@!trie_not_ready:boolean; {is the trie still in linked form?} tini @y @!init @!trie_taken: ^boolean; {does a family start here?} @t\hskip10pt@>@!trie_min:array[ASCII_code] of trie_pointer; {the first possible slot for each character} @t\hskip10pt@>@!trie_max:trie_pointer; {largest location used in |trie|} @t\hskip10pt@>@!trie_not_ready:boolean; {is the trie still in linked form?} tini @z @x [43.951] l.18539 - Dynamically allocate. trie_not_ready:=true; trie_root:=0; trie_c[0]:=si(0); trie_ptr:=0; @y trie_not_ready:=true; @z @x [43.958] l.18634 - bigtrie: Larger tries. @= h.rh:=0; h.b0:=min_quarterword; h.b1:=min_quarterword; {|trie_link:=0|, |trie_op:=min_quarterword|, |trie_char:=qi(0)|} @y @d clear_trie == {clear |trie[r]|} begin trie_link(r):=0; trie_op(r):=min_trie_op; trie_char(r):=min_quarterword; {|trie_char:=qi(0)|} end @= @z @x [43.958] l.18638 - bigtrie: Larger tries. begin for r:=0 to 256 do trie[r]:=h; @y begin for r:=0 to 256 do clear_trie; @z @x [43.958] l.18643 - bigtrie: Larger tries. repeat s:=trie_link(r); trie[r]:=h; r:=s; @y repeat s:=trie_link(r); clear_trie; r:=s; @z @x [43.960] l.18677 - bigtrie: Larger tries. @!v:quarterword; {trie op code} @y @!v:trie_opcode; {trie op code} @z @x [43.963] l.18749 - bigtrie: Larger tries. if trie_o[q]<>min_quarterword then @y if trie_o[q]<>min_trie_op then @z @x [43.964] l.18762 - bigtrie: Larger tries. trie_c[p]:=si(c); trie_o[p]:=min_quarterword; @y trie_c[p]:=si(c); trie_o[p]:=min_trie_op; @z @x [43.965] l.18768 - bigtrie: Larger tries. l:=k; v:=min_quarterword; @y l:=k; v:=min_trie_op; @z @x [43.966] l.18786 - bigtrie: Larger tries. @!h:two_halves; {template used to zero out |trie|'s holes} @y @z %% %% We can rewrite the original code after "main_loop_move+2" upto the %% "tail_append(lig_stack)" in module 1036 as %% % % main_loop_move+2: % if font_bc[main_f]<=cur_chr then % if cur_chr<=font_ec[main_f] then % begin main_i:=char_info(main_f)(cur_l); % if char_exists(main_i) goto main_loop_move+3; % end; % char_warning(main_f,cur_chr); free_avail(lig_stack); goto big_switch; % main_loop_move+3: % tail_append(lig_stack) {|main_loop_lookahead| is next} % %% %% We can use the rewritten code above to include additional MLTeX %% specific parts in the future. Additionally it can be used when %% optimizing |main_control| to minimize the call of the function %% |effective_char|. %% % %@x [46.1030] l.19977 - MLTeX: substitution in |main_control| % main_loop_move,main_loop_move+1,main_loop_move+2,main_loop_move_lig, %@y % main_loop_move,main_loop_move+1,main_loop_move+2,main_loop_move+3, % main_loop_move_lig, %@z @x [46.1034] l.20074 - source specials @= @y @= if ((head=tail) and (mode>0)) then begin if (insert_src_special_auto) then append_src_special; end; @z @x [46.1036] l.20138 - MLTeX: substitution in |main_control| main_loop_move+2:if(cur_chrfont_ec[main_f]) then @y main_loop_move+2: if(qo(effective_char(false,main_f,qi(cur_chr)))>font_ec[main_f])or (qo(effective_char(false,main_f,qi(cur_chr)))null then begin_token_list(every_vbox,every_vbox_text); @y if (insert_src_special_every_vbox) then insert_src_special; if every_vbox<>null then begin_token_list(every_vbox,every_vbox_text); @z % disabled in original tex-src-special.ch @x [47.1083] l.20969 - source specials if every_hbox<>null then begin_token_list(every_hbox,every_hbox_text); @y if (insert_src_special_every_hbox) then insert_src_special; if every_hbox<>null then begin_token_list(every_hbox,every_hbox_text); @z @x [47.1091] l.21064 - source specials if indented then begin tail:=new_null_box; link(head):=tail; width(tail):=par_indent;@+ end; @y if indented then begin tail:=new_null_box; link(head):=tail; width(tail):=par_indent; if (insert_src_special_every_par) then insert_src_special;@+ end; @z % disabled in original tex-src-special.ch, conflicts with etex. @x [47.1096] l.21121 - source specials else line_break(widow_penalty); @y else begin if (insert_src_special_every_parend) then insert_src_special; line_break(widow_penalty); end; @z @x [48.1142] l.21697 - source specials if every_math<>null then begin_token_list(every_math,every_math_text); @y if (insert_src_special_every_math) then insert_src_special; if every_math<>null then begin_token_list(every_math,every_math_text); @z % disabled in original tex-src-special.ch @x [48.1145] l.21705 - source specials if every_display<>null then begin_token_list(every_display,every_display_text); @y if (insert_src_special_every_display) then append_src_special; if every_display<>null then begin_token_list(every_display,every_display_text); @z @x [48.1167] l.22042 - source specials if every_vbox<>null then begin_token_list(every_vbox,every_vbox_text); @y if (insert_src_special_every_vbox) then insert_src_special; if every_vbox<>null then begin_token_list(every_vbox,every_vbox_text); @z @x [49.1215] l.22719 - hash_extra if (cur_cs=0)or(cur_cs>frozen_control_sequence) then @y if (cur_cs=0)or(cur_cs>eqtb_top)or ((cur_cs>frozen_control_sequence)and(cur_cs<=eqtb_size)) then @z @x [49.1222] l.22794 - MLTeX: \charsubdef primitive @d toks_def_code=6 {|shorthand_def| for \.{\\toksdef}} @y @d toks_def_code=6 {|shorthand_def| for \.{\\toksdef}} @d char_sub_def_code=7 {|shorthand_def| for \.{\\charsubdef}} @z @x [49.1222] l.22810 - MLTeX: \charsubdef primitive @!@:toks_def_}{\.{\\toksdef} primitive@> @y @!@:toks_def_}{\.{\\toksdef} primitive@> if mltex_p then begin primitive("charsubdef",shorthand_def,char_sub_def_code);@/ @!@:char_sub_def_}{\.{\\charsubdef} primitive@> end; @z @x [49.1222] l.22820 - MLTeX: \charsubdef primitive othercases print_esc("toksdef") @y char_sub_def_code: print_esc("charsubdef"); othercases print_esc("toksdef") @z @x [49.1222] l.22833 - MLTeX: \charsubdef primitive shorthand_def: begin n:=cur_chr; get_r_token; p:=cur_cs; define(p,relax,256); @y shorthand_def: if cur_chr=char_sub_def_code then begin scan_char_num; p:=char_sub_code_base+cur_val; scan_optional_equals; scan_char_num; n:=cur_val; {accent character in substitution} scan_char_num; if (tracing_char_sub_def>0) then begin begin_diagnostic; print_nl("New character substitution: "); print_ASCII(p-char_sub_code_base); print(" = "); print_ASCII(n); print_char(" "); print_ASCII(cur_val); end_diagnostic(false); end; n:=n*256+cur_val; define(p,data,hi(n)); if (p-char_sub_code_base)char_sub_def_max then word_define(int_base+char_sub_def_max_code,p-char_sub_code_base); end else begin n:=cur_chr; get_r_token; p:=cur_cs; define(p,relax,256); @z @x [49.1252] l.23230 - INI = VIR, so have to do runtime test. begin @!init new_patterns; goto done;@;@+tini@/ @y 23215 begin @!Init new_patterns; goto done;@;@+Tini@/ @z % undo Knuth's change because % a) the string is already replaced in |scan_file_name| and therefore % b) the wrong string will get flushed!!! % @x [49.1257] l.23328 unused variable @!flushable_string:str_number; {string not yet referenced} @y @z @x [49.1260] l.23383 new_font: string recycling -- already done flushable_string:=str_ptr-1; @y @z % If you don't want to remove code with the following two changes, % please replace the former change by % % @x % flushable_string:=str_ptr-1; % @y % if cur_name=str_ptr-1 then % flushable_string:=str_ptr-1 % else % flushable_string:=str_ptr; {number of a non-existing} % @z % % otherwise the wrong string will get removed by |flush_string|!! % @x [49.1260] l.23386 new_font: string recycling -- already done begin if cur_name=flushable_string then begin flush_string; cur_name:=font_name[f]; end; if s>0 then @y begin if s>0 then @z @x [49.1265] if batchmode, mktex... scripts should be silent. interaction:=cur_chr; @y interaction:=cur_chr; if interaction = batch_mode then kpse_make_tex_discard_errors := 1 else kpse_make_tex_discard_errors := 0; @z @x [49.1275] l.23441 - Same stuff as for \input, this time for \openin. if cur_ext="" then cur_ext:=".tex"; pack_cur_name; if a_open_in(read_file[n]) then read_open[n]:=just_open; @y pack_cur_name; tex_input_type:=0; {Tell |open_input| we are \.{\\openin}.} if kpse_in_name_ok(stringcast(name_of_file+1)) and a_open_in(read_file[n], kpse_tex_format) then read_open[n]:=just_open; @z @x [50.1301] l.23679 - INI = VIR, so runtime test. format_ident:=" (INITEX)"; @y if ini_version then format_ident:=" (INITEX)"; @z % Eliminate now-unused variable `w' in `store_fmt_file'. % Add format_engine. @x [50.1302] l.23690 - store_fmt_file @!w: four_quarters; {four ASCII codes} @y @!format_engine: ^text_char; @z % MLTeX: dump |mltex_p| to fmt file @x [50.1302] l.23694 @; @y @; @; @z % Eliminate now-unused variable `w' in `load_fmt_file'. % Add format_engine. % Add dummies for undumping |xord|, |xchr|, and |xprn| into the void. @x [50.1303] l.23722 - load_fmt_file @!w: four_quarters; {four ASCII codes} @y @!format_engine: ^text_char; @!dummy_xord: ASCII_code; @!dummy_xchr: text_char; @!dummy_xprn: ASCII_code; @z % MLTeX: undump |mltex_enabled_p| from fmt file @x [50.1303] l.23694 begin @; @y begin @; @; @z @x [50.1305] l.23751 - Do dumping and undumping of fmt files in C. @d dump_wd(#)==begin fmt_file^:=#; put(fmt_file);@+end @d dump_int(#)==begin fmt_file^.int:=#; put(fmt_file);@+end @d dump_hh(#)==begin fmt_file^.hh:=#; put(fmt_file);@+end @d dump_qqqq(#)==begin fmt_file^.qqqq:=#; put(fmt_file);@+end @y @z @x [1306] @d undump_wd(#)==begin get(fmt_file); #:=fmt_file^;@+end @d undump_int(#)==begin get(fmt_file); #:=fmt_file^.int;@+end @d undump_hh(#)==begin get(fmt_file); #:=fmt_file^.hh;@+end @d undump_qqqq(#)==begin get(fmt_file); #:=fmt_file^.qqqq;@+end @y @z @x [still 1306] debug format file @d undump_size_end_end(#)==too_small(#)@+else undump_end_end @y @d format_debug_end(#)== write_ln (stderr, ' = ', #); end; @d format_debug(#)== if debug_format_file then begin write (stderr, 'fmtdebug:', #); format_debug_end @d undump_size_end_end(#)== too_small(#)@+else format_debug (#)(x); undump_end_end @z @x [50,1307] l.23779 - texarray dump_int(@$);@/ @y dump_int(@"57325458); {Web2C \TeX's magic constant: "W2TX"} {Align engine to 4 bytes with one or more trailing NUL} x:=strlen(engine_name); format_engine:=xmalloc_array(text_char,x+4); strcpy(stringcast(format_engine), engine_name); for k:=x to x+3 do format_engine[k]:=0; x:=x+4-(x mod 4); dump_int(x);dump_things(format_engine[0], x); libc_free(format_engine);@/ dump_int(@$);@/ @; dump_int(max_halfword);@/ dump_int(hash_high); @z %%%%%%%% dynamic hyph_size @x 23784 m.1307 dump_int(hyph_size) @y 23784 dump_int(hyph_prime) @z @x [50.1308] l.23793 - texarray x:=fmt_file^.int; if x<>@$ then goto bad_fmt; {check that strings are the same} @y @+Init libc_free(font_info); libc_free(str_pool); libc_free(str_start); libc_free(yhash); libc_free(zeqtb); libc_free(yzmem); @+Tini undump_int(x); format_debug('format magic number')(x); if x<>@"57325458 then goto bad_fmt; {not a format file} undump_int(x); format_debug('engine name size')(x); if (x<0) or (x>256) then goto bad_fmt; {corrupted format file} format_engine:=xmalloc_array(text_char, x); undump_things(format_engine[0], x); format_engine[x-1]:=0; {force string termination, just in case} if strcmp(engine_name, stringcast(format_engine)) then begin wake_up_terminal; wterm_ln('---! ', stringcast(name_of_file+1), ' was written by ', format_engine); libc_free(format_engine); goto bad_fmt; end; libc_free(format_engine); undump_int(x); format_debug('string pool checksum')(x); if x<>@$ then begin {check that strings are the same} wake_up_terminal; wterm_ln('---! ', stringcast(name_of_file+1), ' made by different executable version, strings are different'); goto bad_fmt; end; @; undump_int(x); if x<>max_halfword then goto bad_fmt; {check |max_halfword|} undump_int(hash_high); if (hash_high<0)or(hash_high>sup_hash_extra) then goto bad_fmt; if hash_extramem_bot then goto bad_fmt; undump_int(x); if x<>mem_top then goto bad_fmt; @y undump_int(x); format_debug ('mem_bot')(x); if x<>mem_bot then goto bad_fmt; undump_int(mem_top); format_debug ('mem_top')(mem_top); if mem_bot+1100>mem_top then goto bad_fmt; head:=contrib_head; tail:=contrib_head; page_tail:=page_head; {page initialization} mem_min := mem_bot - extra_mem_bot; mem_max := mem_top + extra_mem_top; yzmem:=xmalloc_array (memory_word, mem_max - mem_min + 1); zmem := yzmem - mem_min; {this pointer arithmetic fails with some compilers} mem := zmem; @z %%%%%%%% dynamic hyph_size @x 23804 m.1308 if x<>hyph_size then goto bad_fmt @y 23804 if x<>hyph_prime then goto bad_fmt @z % [1309] Make dumping/undumping more efficient by doing whole arrays at % a time, via fread/fwrite in texmfmp.c. @x [50.1309] l.23814 - Make dumping/undumping more efficient. for k:=0 to str_ptr do dump_int(str_start[k]); k:=0; while k+4eqtb_size @y k:=j+1; dump_int(k-l); until k>eqtb_size; if hash_high>0 then dump_things(eqtb[eqtb_size+1],hash_high); {dump |hash_extra| part} @z @x [50.1317] l.23958 - Make dumping/undumping more efficient - eqtb for j:=k to k+x-1 do undump_wd(eqtb[j]); @y undump_things(eqtb[k], x); @z @x [50.1317] l.23960 - hash_extra until k>eqtb_size @y until k>eqtb_size; if hash_high>0 then undump_things(eqtb[eqtb_size+1],hash_high); {undump |hash_extra| part} @z @x [50.1318] l.23968 - hash_extra dump_int(hash_used); cs_count:=frozen_control_sequence-1-hash_used; @y 23968 dump_int(hash_used); cs_count:=frozen_control_sequence-1-hash_used+hash_high; @z @x [50.1318] l.23972 - Make dumping/undumping more efficient, hash_extra for p:=hash_used+1 to undefined_control_sequence-1 do dump_hh(hash[p]); @y dump_things(hash[hash_used+1], undefined_control_sequence-1-hash_used); if hash_high>0 then dump_things(hash[eqtb_size+1], hash_high); @z @x [50.1319] l.23980 - Make dumping/undumping more efficient, hash_extra for p:=hash_used+1 to undefined_control_sequence-1 do undump_hh(hash[p]); @y undump_things (hash[hash_used+1], undefined_control_sequence-1-hash_used); if debug_format_file then begin print_csnames (hash_base, undefined_control_sequence - 1); end; if hash_high > 0 then begin undump_things (hash[eqtb_size+1], hash_high); if debug_format_file then begin print_csnames (eqtb_size + 1, hash_high - (eqtb_size + 1)); end; end; @z @x [50.1320] l.23985 - Make dumping/undumping more efficient - tfm for k:=0 to fmem_ptr-1 do dump_wd(font_info[k]); dump_int(font_ptr); for k:=null_font to font_ptr do @; @y dump_things(font_info[0], fmem_ptr); dump_int(font_ptr); @; @z @x [50.1320] l.23991 - i18n fix print_int(font_ptr-font_base); print(" preloaded font"); if font_ptr<>font_base+1 then print_char("s") @y print_int(font_ptr-font_base); if font_ptr<>font_base+1 then print(" preloaded fonts") else print(" preloaded font") @z @x [50.1321] l.23994 - texarray undump_size(7)(font_mem_size)('font mem size')(fmem_ptr); for k:=0 to fmem_ptr-1 do undump_wd(font_info[k]); undump_size(font_base)(font_max)('font max')(font_ptr); for k:=null_font to font_ptr do @ @y undump_size(7)(sup_font_mem_size)('font mem size')(fmem_ptr); if fmem_ptr>font_mem_size then font_mem_size:=fmem_ptr; font_info:=xmalloc_array(fmemory_word, font_mem_size); undump_things(font_info[0], fmem_ptr);@/ undump_size(font_base)(font_base+max_font_max)('font max')(font_ptr); {This undumps all of the font info, despite the name.} @; @z % [50.1322] Dumping font_info. % Knuth's code writes all the information relevant to a single font % in the same section of the fmt file. But it's a lot faster to % write the arrays of information out, one whole array at a time. % So that's the way we handle dumping and undumping font info. @x [50.1322] l.24000 - Make dumping/undumping more efficient - tfm @ @= begin dump_qqqq(font_check[k]); dump_int(font_size[k]); dump_int(font_dsize[k]); dump_int(font_params[k]);@/ dump_int(hyphen_char[k]); dump_int(skew_char[k]);@/ dump_int(font_name[k]); dump_int(font_area[k]);@/ dump_int(font_bc[k]); dump_int(font_ec[k]);@/ dump_int(char_base[k]); dump_int(width_base[k]); dump_int(height_base[k]);@/ dump_int(depth_base[k]); dump_int(italic_base[k]); dump_int(lig_kern_base[k]);@/ dump_int(kern_base[k]); dump_int(exten_base[k]); dump_int(param_base[k]);@/ dump_int(font_glue[k]);@/ dump_int(bchar_label[k]); dump_int(font_bchar[k]); dump_int(font_false_bchar[k]);@/ print_nl("\font"); print_esc(font_id_text(k)); print_char("="); print_file_name(font_name[k],font_area[k],""); if font_size[k]<>font_dsize[k] then begin print(" at "); print_scaled(font_size[k]); print("pt"); end; end @y @ @= begin dump_things(font_check[null_font], font_ptr+1-null_font); dump_things(font_size[null_font], font_ptr+1-null_font); dump_things(font_dsize[null_font], font_ptr+1-null_font); dump_things(font_params[null_font], font_ptr+1-null_font); dump_things(hyphen_char[null_font], font_ptr+1-null_font); dump_things(skew_char[null_font], font_ptr+1-null_font); dump_things(font_name[null_font], font_ptr+1-null_font); dump_things(font_area[null_font], font_ptr+1-null_font); dump_things(font_bc[null_font], font_ptr+1-null_font); dump_things(font_ec[null_font], font_ptr+1-null_font); dump_things(char_base[null_font], font_ptr+1-null_font); dump_things(width_base[null_font], font_ptr+1-null_font); dump_things(height_base[null_font], font_ptr+1-null_font); dump_things(depth_base[null_font], font_ptr+1-null_font); dump_things(italic_base[null_font], font_ptr+1-null_font); dump_things(lig_kern_base[null_font], font_ptr+1-null_font); dump_things(kern_base[null_font], font_ptr+1-null_font); dump_things(exten_base[null_font], font_ptr+1-null_font); dump_things(param_base[null_font], font_ptr+1-null_font); dump_things(font_glue[null_font], font_ptr+1-null_font); dump_things(bchar_label[null_font], font_ptr+1-null_font); dump_things(font_bchar[null_font], font_ptr+1-null_font); dump_things(font_false_bchar[null_font], font_ptr+1-null_font); for k:=null_font to font_ptr do begin print_nl("\font"); print_esc(font_id_text(k)); print_char("="); print_file_name(font_name[k],font_area[k],""); if font_size[k]<>font_dsize[k] then begin print(" at "); print_scaled(font_size[k]); print("pt"); end; end; end @z @x [50.1322] l.24031 - Make dumping/undumping more efficient - tfm @ @= begin undump_qqqq(font_check[k]);@/ undump_int(font_size[k]); undump_int(font_dsize[k]); undump(min_halfword)(max_halfword)(font_params[k]);@/ undump_int(hyphen_char[k]); undump_int(skew_char[k]);@/ undump(0)(str_ptr)(font_name[k]); undump(0)(str_ptr)(font_area[k]);@/ undump(0)(255)(font_bc[k]); undump(0)(255)(font_ec[k]);@/ undump_int(char_base[k]); undump_int(width_base[k]); undump_int(height_base[k]);@/ undump_int(depth_base[k]); undump_int(italic_base[k]); undump_int(lig_kern_base[k]);@/ undump_int(kern_base[k]); undump_int(exten_base[k]); undump_int(param_base[k]);@/ undump(min_halfword)(lo_mem_max)(font_glue[k]);@/ undump(0)(fmem_ptr-1)(bchar_label[k]); undump(min_quarterword)(non_char)(font_bchar[k]); undump(min_quarterword)(non_char)(font_false_bchar[k]); end @y @ This module should now be named `Undump all the font arrays'. @= begin {Allocate the font arrays} font_check:=xmalloc_array(four_quarters, font_max); font_size:=xmalloc_array(scaled, font_max); font_dsize:=xmalloc_array(scaled, font_max); font_params:=xmalloc_array(font_index, font_max); font_name:=xmalloc_array(str_number, font_max); font_area:=xmalloc_array(str_number, font_max); font_bc:=xmalloc_array(eight_bits, font_max); font_ec:=xmalloc_array(eight_bits, font_max); font_glue:=xmalloc_array(halfword, font_max); hyphen_char:=xmalloc_array(integer, font_max); skew_char:=xmalloc_array(integer, font_max); bchar_label:=xmalloc_array(font_index, font_max); font_bchar:=xmalloc_array(nine_bits, font_max); font_false_bchar:=xmalloc_array(nine_bits, font_max); char_base:=xmalloc_array(integer, font_max); width_base:=xmalloc_array(integer, font_max); height_base:=xmalloc_array(integer, font_max); depth_base:=xmalloc_array(integer, font_max); italic_base:=xmalloc_array(integer, font_max); lig_kern_base:=xmalloc_array(integer, font_max); kern_base:=xmalloc_array(integer, font_max); exten_base:=xmalloc_array(integer, font_max); param_base:=xmalloc_array(integer, font_max); undump_things(font_check[null_font], font_ptr+1-null_font); undump_things(font_size[null_font], font_ptr+1-null_font); undump_things(font_dsize[null_font], font_ptr+1-null_font); undump_checked_things(min_halfword, max_halfword, font_params[null_font], font_ptr+1-null_font); undump_things(hyphen_char[null_font], font_ptr+1-null_font); undump_things(skew_char[null_font], font_ptr+1-null_font); undump_upper_check_things(str_ptr, font_name[null_font], font_ptr+1-null_font); undump_upper_check_things(str_ptr, font_area[null_font], font_ptr+1-null_font); {There's no point in checking these values against the range $[0,255]$, since the data type is |unsigned char|, and all values of that type are in that range by definition.} undump_things(font_bc[null_font], font_ptr+1-null_font); undump_things(font_ec[null_font], font_ptr+1-null_font); undump_things(char_base[null_font], font_ptr+1-null_font); undump_things(width_base[null_font], font_ptr+1-null_font); undump_things(height_base[null_font], font_ptr+1-null_font); undump_things(depth_base[null_font], font_ptr+1-null_font); undump_things(italic_base[null_font], font_ptr+1-null_font); undump_things(lig_kern_base[null_font], font_ptr+1-null_font); undump_things(kern_base[null_font], font_ptr+1-null_font); undump_things(exten_base[null_font], font_ptr+1-null_font); undump_things(param_base[null_font], font_ptr+1-null_font); undump_checked_things(min_halfword, lo_mem_max, font_glue[null_font], font_ptr+1-null_font); undump_checked_things(0, fmem_ptr-1, bchar_label[null_font], font_ptr+1-null_font); undump_checked_things(min_quarterword, non_char, font_bchar[null_font], font_ptr+1-null_font); undump_checked_things(min_quarterword, non_char, font_false_bchar[null_font], font_ptr+1-null_font); end @z %%%%%%%% dynamic hyph_size @x 24058 m.1324 dump_int(hyph_count); for k:=0 to hyph_size do if hyph_word[k]<>0 then begin dump_int(k); dump_int(hyph_word[k]); dump_int(hyph_list[k]); end; @y 24061 dump_int(hyph_count); if hyph_next <= hyph_prime then hyph_next:=hyph_size; dump_int(hyph_next);{minimum value of |hyphen_size| needed} for k:=0 to hyph_size do if hyph_word[k]<>0 then begin dump_int(k+65536*hyph_link[k]); {assumes number of hyphen exceptions does not exceed 65535} dump_int(hyph_word[k]); dump_int(hyph_list[k]); end; @z @x [50.1324] l.24063 - i18n fix print_ln; print_int(hyph_count); print(" hyphenation exception"); if hyph_count<>1 then print_char("s"); @y print_ln; print_int(hyph_count); if hyph_count<>1 then print(" hyphenation exceptions") else print(" hyphenation exception"); @z @x [50.1324] l.24066 - Make dumping/undumping more efficient - trie for k:=0 to trie_max do dump_hh(trie[k]); @y dump_things(trie_trl[0], trie_max+1); dump_things(trie_tro[0], trie_max+1); dump_things(trie_trc[0], trie_max+1); @z @x [50.1324] l.24068 - Make dumping/undumping more efficient - trie for k:=1 to trie_op_ptr do begin dump_int(hyf_distance[k]); dump_int(hyf_num[k]); dump_int(hyf_next[k]); end; @y dump_things(hyf_distance[1], trie_op_ptr); dump_things(hyf_num[1], trie_op_ptr); dump_things(hyf_next[1], trie_op_ptr); @z @x [50.1324] l.24076 - i18n fix print(" has "); print_int(trie_op_ptr); print(" op"); if trie_op_ptr<>1 then print_char("s"); @y print(" has "); print_int(trie_op_ptr); if trie_op_ptr<>1 then print(" ops") else print(" op"); @z %%%%%%%% dynamic hyph_size @x 24087 m.1325 undump(0)(hyph_size)(hyph_count); for k:=1 to hyph_count do begin undump(0)(hyph_size)(j); undump(0)(str_ptr)(hyph_word[j]); undump(min_halfword)(max_halfword)(hyph_list[j]); end; @y 24092 undump_size(0)(hyph_size)('hyph_size')(hyph_count); undump_size(hyph_prime)(hyph_size)('hyph_size')(hyph_next); j:=0; for k:=1 to hyph_count do begin undump_int(j); if j<0 then goto bad_fmt; if j>65535 then begin hyph_next:= j div 65536; j:=j - hyph_next * 65536; end else hyph_next:=0; if (j>=hyph_size)or(hyph_next>hyph_size) then goto bad_fmt; hyph_link[j]:=hyph_next; undump(0)(str_ptr)(hyph_word[j]); undump(min_halfword)(max_halfword)(hyph_list[j]); end; {|j| is now the largest occupied location in |hyph_word|} incr(j); if j= hyph_size then hyph_next:=hyph_prime else if hyph_next >= hyph_prime then incr(hyph_next); @z @x [50.1325] l.24094 - Make dumping/undumping more efficient - trie for k:=0 to j do undump_hh(trie[k]); @y {These first three haven't been allocated yet unless we're \.{INITEX}; we do that precisely so we don't allocate more space than necessary.} if not trie_trl then trie_trl:=xmalloc_array(trie_pointer,j+1); undump_things(trie_trl[0], j+1); if not trie_tro then trie_tro:=xmalloc_array(trie_pointer,j+1); undump_things(trie_tro[0], j+1); if not trie_trc then trie_trc:=xmalloc_array(quarterword, j+1); undump_things(trie_trc[0], j+1); @z @x [50.1325] l.24096 - Make dumping/undumping more efficient - trie for k:=1 to j do begin undump(0)(63)(hyf_distance[k]); {a |small_number|} undump(0)(63)(hyf_num[k]); undump(min_quarterword)(max_quarterword)(hyf_next[k]); end; @y {I'm not sure we have such a strict limitation (64) on these values, so let's leave them unchecked.} undump_things(hyf_distance[1], j); undump_things(hyf_num[1], j); undump_upper_check_things(max_trie_op, hyf_next[1], j); @z @x [50.1327] l.24117 - Allow command line to override dumped value. undump(batch_mode)(error_stop_mode)(interaction); @y undump(batch_mode)(error_stop_mode)(interaction); if interaction_option<>unspecified_mode then interaction:=interaction_option; @z @x [50.1327] l.24172 - Test for end-of-file already done by undump. if (x<>69069)or eof(fmt_file) then goto bad_fmt @y if x<>69069 then goto bad_fmt @z @x [51.1332] l.24203 - make the main program a procedure, for eqtb hack. @p begin @!{|start_here|} @y @d const_chk(#)==begin if # < inf@&# then # := inf@&# else if # > sup@&# then # := sup@&# end {|setup_bound_var| stuff duplicated in \.{mf.ch}.} @d setup_bound_var(#)==bound_default:=#; setup_bound_var_end @d setup_bound_var_end(#)==bound_name:=#; setup_bound_var_end_end @d setup_bound_var_end_end(#)== setup_bound_variable(addressof(#), bound_name, bound_default) @p procedure main_body; begin @!{|start_here|} {Bounds that may be set from the configuration file. We want the user to be able to specify the names with underscores, but \.{TANGLE} removes underscores, so we're stuck giving the names twice, once as a string, once as the identifier. How ugly.} setup_bound_var (0)('mem_bot')(mem_bot); setup_bound_var (250000)('main_memory')(main_memory); {|memory_word|s for |mem| in \.{INITEX}} setup_bound_var (0)('extra_mem_top')(extra_mem_top); {increase high mem in \.{VIRTEX}} setup_bound_var (0)('extra_mem_bot')(extra_mem_bot); {increase low mem in \.{VIRTEX}} setup_bound_var (200000)('pool_size')(pool_size); setup_bound_var (75000)('string_vacancies')(string_vacancies); setup_bound_var (5000)('pool_free')(pool_free); {min pool avail after fmt} setup_bound_var (15000)('max_strings')(max_strings); setup_bound_var (100)('strings_free')(strings_free); setup_bound_var (100000)('font_mem_size')(font_mem_size); setup_bound_var (500)('font_max')(font_max); setup_bound_var (20000)('trie_size')(trie_size); {if |ssup_trie_size| increases, recompile} setup_bound_var (659)('hyph_size')(hyph_size); setup_bound_var (3000)('buf_size')(buf_size); setup_bound_var (50)('nest_size')(nest_size); setup_bound_var (15)('max_in_open')(max_in_open); setup_bound_var (60)('param_size')(param_size); setup_bound_var (4000)('save_size')(save_size); setup_bound_var (300)('stack_size')(stack_size); setup_bound_var (16384)('dvi_buf_size')(dvi_buf_size); setup_bound_var (79)('error_line')(error_line); setup_bound_var (50)('half_error_line')(half_error_line); setup_bound_var (79)('max_print_line')(max_print_line); setup_bound_var (0)('hash_extra')(hash_extra); setup_bound_var (10000)('expand_depth')(expand_depth); const_chk (mem_bot); const_chk (main_memory); @+Init extra_mem_top := 0; extra_mem_bot := 0; @+Tini if extra_mem_bot>sup_main_memory then extra_mem_bot:=sup_main_memory; if extra_mem_top>sup_main_memory then extra_mem_top:=sup_main_memory; {|mem_top| is an index, |main_memory| a size} mem_top := mem_bot + main_memory -1; mem_min := mem_bot; mem_max := mem_top; {Check other constants against their sup and inf.} const_chk (trie_size); const_chk (hyph_size); const_chk (buf_size); const_chk (nest_size); const_chk (max_in_open); const_chk (param_size); const_chk (save_size); const_chk (stack_size); const_chk (dvi_buf_size); const_chk (pool_size); const_chk (string_vacancies); const_chk (pool_free); const_chk (max_strings); const_chk (strings_free); const_chk (font_mem_size); const_chk (font_max); const_chk (hash_extra); if error_line > ssup_error_line then error_line := ssup_error_line; {array memory allocation} buffer:=xmalloc_array (ASCII_code, buf_size); nest:=xmalloc_array (list_state_record, nest_size); save_stack:=xmalloc_array (memory_word, save_size); input_stack:=xmalloc_array (in_state_record, stack_size); input_file:=xmalloc_array (alpha_file, max_in_open); line_stack:=xmalloc_array (integer, max_in_open); source_filename_stack:=xmalloc_array (str_number, max_in_open); full_source_filename_stack:=xmalloc_array (str_number, max_in_open); param_stack:=xmalloc_array (halfword, param_size); dvi_buf:=xmalloc_array (eight_bits, dvi_buf_size); hyph_word :=xmalloc_array (str_number, hyph_size); hyph_list :=xmalloc_array (halfword, hyph_size); hyph_link :=xmalloc_array (hyph_pointer, hyph_size); @+Init yzmem:=xmalloc_array (memory_word, mem_top - mem_bot + 1); zmem := yzmem - mem_bot; {Some compilers require |mem_bot=0|} eqtb_top := eqtb_size+hash_extra; if hash_extra=0 then hash_top:=undefined_control_sequence else hash_top:=eqtb_top; yhash:=xmalloc_array (two_halves,1+hash_top-hash_offset); hash:=yhash - hash_offset; {Some compilers require |hash_offset=0|} next(hash_base):=0; text(hash_base):=0; for hash_used:=hash_base+1 to hash_top do hash[hash_used]:=hash[hash_base]; zeqtb:=xmalloc_array (memory_word, eqtb_top); eqtb:=zeqtb; str_start:=xmalloc_array (pool_pointer, max_strings); str_pool:=xmalloc_array (packed_ASCII_code, pool_size); font_info:=xmalloc_array (fmemory_word, font_mem_size); @+Tini @z @x [51.1332] l.24215 - INI = VIR, so pool init needs runtime test @!init if not get_strings_started then goto final_end; init_prim; {call |primitive| for each primitive} init_str_ptr:=str_ptr; init_pool_ptr:=pool_ptr; fix_date_and_time; tini@/ @y @!Init if not get_strings_started then goto final_end; init_prim; {call |primitive| for each primitive} init_str_ptr:=str_ptr; init_pool_ptr:=pool_ptr; fix_date_and_time; Tini@/ @z @x [51.1332] l.24225 - main end_of_TEX: close_files_and_terminate; final_end: ready_already:=0; end. @y close_files_and_terminate; final_end: do_final_end; end {|main_body|}; @z @x [51.1333] l.24254 - Print new line before termination; switch to editor if necessary. slow_print(log_name); print_char("."); end; end; @y print_file_name(0, log_name, 0); print_char("."); end; end; print_ln; if (edit_name_start<>0) and (interaction>batch_mode) then call_edit(str_pool,edit_name_start,edit_name_length,edit_line); @z @x [51.1334] l.24275 - hash_extra wlog_ln(' ',cs_count:1,' multiletter control sequences out of ', hash_size:1);@/ @y 24276 wlog_ln(' ',cs_count:1,' multiletter control sequences out of ', hash_size:1, '+', hash_extra:1);@/ @z @x [51.1335] l.24335 - Only do dump if ini. begin @!init for c:=top_mark_code to split_bot_mark_code do @y begin @!Init for c:=top_mark_code to split_bot_mark_code do @z @x [51.1335] l.24337 - Only do dump if ini. store_fmt_file; return;@+tini@/ @y store_fmt_file; return;@+Tini@/ @z @x [51.1337] l.24361 - Handle %&format in all cases. if (format_ident=0)or(buffer[loc]="&") then @y if (format_ident=0)or(buffer[loc]="&")or dump_line then @z @x [51.1337] l.24366 - Dynamic arrays size. w_close(fmt_file); @y w_close(fmt_file); eqtb:=zeqtb; @z %% [51] m.1337 l.24371 - MLTeX: add. MLTeX banner after loading fmt file %% (MLTeX change: only "if mltex_enabled_p then ....;") @x [51.1337] l.24371 - Allocate hyphenation tries, do char translation, MLTeX fix_date_and_time;@/ @y if mltex_enabled_p then begin wterm_ln('MLTeX v2.2 enabled'); end; fix_date_and_time;@/ @!init if trie_not_ready then begin {initex without format loaded} trie_trl:=xmalloc_array (trie_pointer, trie_size); trie_tro:=xmalloc_array (trie_pointer, trie_size); trie_trc:=xmalloc_array (quarterword, trie_size); trie_c:=xmalloc_array (packed_ASCII_code, trie_size); trie_o:=xmalloc_array (trie_opcode, trie_size); trie_l:=xmalloc_array (trie_pointer, trie_size); trie_r:=xmalloc_array (trie_pointer, trie_size); trie_hash:=xmalloc_array (trie_pointer, trie_size); trie_taken:=xmalloc_array (boolean, trie_size); trie_root:=0; trie_c[0]:=si(0); trie_ptr:=0; {Allocate and initialize font arrays} font_check:=xmalloc_array(four_quarters, font_max); font_size:=xmalloc_array(scaled, font_max); font_dsize:=xmalloc_array(scaled, font_max); font_params:=xmalloc_array(font_index, font_max); font_name:=xmalloc_array(str_number, font_max); font_area:=xmalloc_array(str_number, font_max); font_bc:=xmalloc_array(eight_bits, font_max); font_ec:=xmalloc_array(eight_bits, font_max); font_glue:=xmalloc_array(halfword, font_max); hyphen_char:=xmalloc_array(integer, font_max); skew_char:=xmalloc_array(integer, font_max); bchar_label:=xmalloc_array(font_index, font_max); font_bchar:=xmalloc_array(nine_bits, font_max); font_false_bchar:=xmalloc_array(nine_bits, font_max); char_base:=xmalloc_array(integer, font_max); width_base:=xmalloc_array(integer, font_max); height_base:=xmalloc_array(integer, font_max); depth_base:=xmalloc_array(integer, font_max); italic_base:=xmalloc_array(integer, font_max); lig_kern_base:=xmalloc_array(integer, font_max); kern_base:=xmalloc_array(integer, font_max); exten_base:=xmalloc_array(integer, font_max); param_base:=xmalloc_array(integer, font_max); font_ptr:=null_font; fmem_ptr:=7; font_name[null_font]:="nullfont"; font_area[null_font]:=""; hyphen_char[null_font]:="-"; skew_char[null_font]:=-1; bchar_label[null_font]:=non_address; font_bchar[null_font]:=non_char; font_false_bchar[null_font]:=non_char; font_bc[null_font]:=1; font_ec[null_font]:=0; font_size[null_font]:=0; font_dsize[null_font]:=0; char_base[null_font]:=0; width_base[null_font]:=0; height_base[null_font]:=0; depth_base[null_font]:=0; italic_base[null_font]:=0; lig_kern_base[null_font]:=0; kern_base[null_font]:=0; exten_base[null_font]:=0; font_glue[null_font]:=null; font_params[null_font]:=7; param_base[null_font]:=-1; for font_k:=0 to 6 do font_info[font_k].sc:=0; end; tini@/ font_used:=xmalloc_array (boolean, font_max); for font_k:=font_base to font_max do font_used[font_k]:=false; @z % [52.1338] Core-dump in debugging mode on 0 input. Under Unix, it's % not possible to portably switch into the debugger while a program is % running. The best approximation is to do a core dump, then run the % debugger on it later. @x [52.1338] l.24411 - Core-dump in debugging mode on 0 input. begin goto breakpoint;@/ {go to every declared label at least once} breakpoint: m:=0; @{'BREAKPOINT'@}@/ end @y dump_core {do something to cause a core dump} @z @x [52.1339] l.24429 - debug - print tfm info 5: print_word(font_info[n]); @y 24397 5: begin print_scaled(font_info[n].sc); print_char(" ");@/ print_int(font_info[n].qqqq.b0); print_char(":");@/ print_int(font_info[n].qqqq.b1); print_char(":");@/ print_int(font_info[n].qqqq.b2); print_char(":");@/ print_int(font_info[n].qqqq.b3); end; @z @x [53.1344] l.24544 - source specials primitive("special",extension,special_node);@/ @y primitive("special",extension,special_node);@/ text(frozen_special):="special"; eqtb[frozen_special]:=eqtb[cur_val];@/ @z @x [53.1348] (do_extension) Remove unused variables var i,@!j,@!k:integer; {all-purpose integers} @!p,@!q,@!r:pointer; {all-purpose pointers} @y var k:integer; {all-purpose integers} @!p:pointer; {all-purpose pointers} @z % [53.1350] (new_write_whatsit) Allow 18 as a \write stream. We never % refer to an actual file, though, so we don't need to change the % write_file or write_open arrays. We provide for disabling this at % runtime, for paranoids. @x [53.1350] l.24609 - system: Allow 18 as a \write stream. else if cur_val>15 then cur_val:=16; @y else if (cur_val>15) and (cur_val <> 18) then cur_val:=16; @z @x [53.1370] l.24770 - \write18{foo} begin @ system(foo). if write_open[j] then selector:=j @y if j=18 then selector := new_string else if write_open[j] then selector:=j @z % Then call system(3) on that string. @x [53.1370] l.24779 - system: (write_out) \write18{foo} => system(foo). flush_list(def_ref); selector:=old_setting; @y flush_list(def_ref); if j=18 then begin if (tracing_online<=0) then selector:=log_only {Show what we're doing in the log file.} else selector:=term_and_log; {Show what we're doing.} {If the log file isn't open yet, we can only send output to the terminal. Calling |open_log_file| from here seems to result in bad data in the log.} if not log_opened then selector:=term_only; print_nl("runsystem("); for d:=0 to cur_length-1 do begin {|print| gives up if passed |str_ptr|, so do it by hand.} print(so(str_pool[str_start[str_ptr]+d])); {N.B.: not |print_char|} end; print(")..."); if shellenabledp then begin str_room(1); append_char(0); {Append a null byte to the expansion.} clobbered:=false; for d:=0 to cur_length-1 do {Convert to external character set.} begin str_pool[str_start[str_ptr]+d]:=xchr[str_pool[str_start[str_ptr]+d]]; if (str_pool[str_start[str_ptr]+d]=null_code) and (d @y @* \[54/web2c] System-dependent changes for Web2c. Here are extra variables for Web2c. (This numbering of the system-dependent section allows easy integration of Web2c and e-\TeX, etc.) @^system dependencies@> @= @!edit_name_start: pool_pointer; {where the filename to switch to starts} @!edit_name_length,@!edit_line: integer; {what line to start editing at} @!ipc_on: cinttype; {level of IPC action, 0 for none [default]} @!stop_at_space: boolean; {whether |more_name| returns false for space} @ The |edit_name_start| will be set to point into |str_pool| somewhere after its beginning if \TeX\ is supposed to switch to an editor on exit. @= edit_name_start:=0; stop_at_space:=true; @ These are used when we regenerate the representation of the first 256 strings. @ = @!save_str_ptr: str_number; @!save_pool_ptr: pool_pointer; @!shellenabledp: cinttype; @!restrictedshell: cinttype; @!output_comment: ^char; @!k,l: 0..255; {used by `Make the first 256 strings', etc.} @ When debugging a macro package, it can be useful to see the exact control sequence names in the format file. For example, if ten new csnames appear, it's nice to know what they are, to help pinpoint where they came from. (This isn't a truly ``basic'' printing procedure, but that's a convenient module in which to put it.) @ = procedure print_csnames (hstart:integer; hfinish:integer); var c,h:integer; begin write_ln(stderr, 'fmtdebug:csnames from ', hstart, ' to ', hfinish, ':'); for h := hstart to hfinish do begin if text(h) > 0 then begin {if have anything at this position} for c := str_start[text(h)] to str_start[text(h) + 1] - 1 do begin put_byte(str_pool[c], stderr); {print the characters} end; write_ln(stderr, '|'); end; end; end; @ Are we printing extra info as we read the format file? @ = @!debug_format_file: boolean; @ A helper for printing file:line:error style messages. Look for a filename in |full_source_filename_stack|, and if we fail to find one fall back on the non-file:line:error style. @= procedure print_file_line; var level: 0..max_in_open; begin level:=in_open; while (level>0) and (full_source_filename_stack[level]=0) do decr(level); if level=0 then print_nl("! ") else begin print_nl (""); print (full_source_filename_stack[level]); print (":"); if level=in_open then print_int (line) else print_int (line_stack[level+1]); print (": "); end; end; @ To be able to determine whether \.{\\write18} is enabled from within \TeX\ we also implement \.{\\eof18}. We sort of cheat by having an additional route |scan_four_bit_int_or_18| which is the same as |scan_four_bit_int| except it also accepts the value 18. @= procedure scan_four_bit_int_or_18; begin scan_int; if (cur_val<0)or((cur_val>15)and(cur_val<>18)) then begin print_err("Bad number"); @.Bad number@> help2("Since I expected to read a number between 0 and 15,")@/ ("I changed this one to zero."); int_error(cur_val); cur_val:=0; end; end; @ Dumping the |xord|, |xchr|, and |xprn| arrays. We dump these always in the format, so a TCX file loaded during format creation can set a default for users of the format. @= dump_things(xord[0], 256); dump_things(xchr[0], 256); dump_things(xprn[0], 256); @ Undumping the |xord|, |xchr|, and |xprn| arrays. This code is more complicated, because we want to ensure that a TCX file specified on the command line will override whatever is in the format. Since the tcx file has already been loaded, that implies throwing away the data in the format. Also, if no |translate_filename| is given, but |eight_bit_p| is set we have to make all characters printable. @= if translate_filename then begin for k:=0 to 255 do undump_things(dummy_xord, 1); for k:=0 to 255 do undump_things(dummy_xchr, 1); for k:=0 to 255 do undump_things(dummy_xprn, 1); end else begin undump_things(xord[0], 256); undump_things(xchr[0], 256); undump_things(xprn[0], 256); if eight_bit_p then for k:=0 to 255 do xprn[k]:=1; end; @* \[54/web2c-string] The string recycling routines. \TeX{} uses 2 upto 4 {\it new\/} strings when scanning a filename in an \.{\\input}, \.{\\openin}, or \.{\\openout} operation. These strings are normally lost because the reference to them are not saved after finishing the operation. |search_string| searches through the string pool for the given string and returns either 0 or the found string number. @= function search_string(@!search:str_number):str_number; label found; var result: str_number; @!s: str_number; {running index} @!len: integer; {length of searched string} begin result:=0; len:=length(search); if len=0 then {trivial case} begin result:=""; goto found; end else begin s:=search-1; {start search with newest string below |s|; |search>1|!} while s>255 do {first 256 strings depend on implementation!!} begin if length(s)=len then if str_eq_str(s,search) then begin result:=s; goto found; end; decr(s); end; end; found:search_string:=result; end; @ The following routine is a variant of |make_string|. It searches the whole string pool for a string equal to the string currently built and returns a found string. Otherwise a new string is created and returned. Be cautious, you can not apply |flush_string| to a replaced string! @= function slow_make_string : str_number; label exit; var s: str_number; {result of |search_string|} @!t: str_number; {new string} begin t:=make_string; s:=search_string(t); if s>0 then begin flush_string; slow_make_string:=s; return; end; slow_make_string:=t; exit:end; @* \[54/web2c] More changes for Web2c. % Related to [25.366] expansion depth check Sometimes, recursive calls to the |expand| routine may cause exhaustion of the run-time calling stack, resulting in forced execution stops by the operating system. To diminish the chance of this happening, a counter is used to keep track of the recursion depth, in conjunction with a constant called |expand_depth|. This does not catch all possible infinite recursion loops, just the ones that exhaust the application calling stack. The actual maximum value of |expand_depth| is outside of our control, but the initial setting of |10000| should be enough to prevent problems. @^system dependencies@> @= expand_depth_count:integer; @ @= expand_depth_count:=0; @ % Related to [29.526] expansion depth check When |scan_file_name| starts it looks for a |left_brace| (skipping \.{\\relax}es, as other \.{\\toks}-like primitives). If a |left_brace| is found, then the procedure scans a file name contained in a balanced token list, expanding tokens as it goes. When the scanner finds the balanced token list, it is converted into a string and fed character-by-character to |more_name| to do its job the same as in the ``normal'' file name scanning. @p procedure scan_file_name_braced; var @!save_scanner_status: small_number; {|scanner_status| upon entry} @!save_def_ref: pointer; {|def_ref| upon entry, important if inside `\.{\\message}} @!save_cur_cs: pointer; @!s: str_number; {temp string} @!p: pointer; {temp pointer} @!i: integer; {loop tally} @!save_stop_at_space: boolean; {this should be in tex.ch} @!dummy: boolean; {Initializing} begin save_scanner_status := scanner_status; {|scan_toks| sets |scanner_status| to |absorbing|} save_def_ref := def_ref; {|scan_toks| uses |def_ref| to point to the token list just read} save_cur_cs := cur_cs; {we set |cur_cs| back a few tokens to use in runaway errors} {Scanning a token list} cur_cs := warning_index; {for possible runaway error} {mimick |call_func| from pdfTeX} if scan_toks(false, true) <> 0 then do_nothing; {actually do the scanning} {|s := tokens_to_string(def_ref);|} old_setting := selector; selector:=new_string; show_token_list(link(def_ref),null,pool_size-pool_ptr); selector := old_setting; s := make_string; {turns the token list read in a string to input} {Restoring some variables} delete_token_ref(def_ref); {remove the token list from memory} def_ref := save_def_ref; {and restore |def_ref|} cur_cs := save_cur_cs; {restore |cur_cs|} scanner_status := save_scanner_status; {restore |scanner_status|} {Passing the read string to the input machinery} save_stop_at_space := stop_at_space; {save |stop_at_space|} stop_at_space := false; {set |stop_at_space| to false to allow spaces in file names} begin_name; for i:=str_start[s] to str_start[s+1]-1 do dummy := more_name(str_pool[i]); {add each read character to the current file name} stop_at_space := save_stop_at_space; {restore |stop_at_space|} end; @* \[54/ML\TeX] System-dependent changes for ML\TeX. @^system dependencies@> The boolean variable |mltex_p| is set by web2c according to the given command line option (or an entry in the configuration file) before any \TeX{} function is called. @ = @!mltex_p: boolean; @ The boolean variable |mltex_enabled_p| is used to enable ML\TeX's character substitution. It is initialized to |false|. When loading a \.{FMT} it is set to the value of the boolean |mltex_p| saved in the \.{FMT} file. Additionally it is set to the value of |mltex_p| in Ini\TeX. @= @!mltex_enabled_p:boolean; {enable character substitution} @ @= mltex_enabled_p:=false; @ The function |effective_char| computes the effective character with respect to font information. The effective character is either the base character part of a character substitution definition, if the character does not exist in the font or the character itself. Inside |effective_char| we can not use |char_info| because the macro |char_info| uses |effective_char| calling this function a second time with the same arguments. If neither the character |c| exists in font |f| nor a character substitution for |c| was defined, you can not use the function value as a character offset in |char_info| because it will access an undefined or invalid |font_info| entry! Therefore inside |char_info| and in other places, |effective_char|'s boolean parameter |err_p| is set to |true| to issue a warning and return the incorrect replacement, but always existing character |font_bc[f]|. @^inner loop@> @= function effective_char(@!err_p:boolean; @!f:internal_font_number;@!c:quarterword):integer; label found; var base_c: integer; {or |eightbits|: replacement base character} @!result: integer; {or |quarterword|} begin result:=c; {return |c| unless it does not exist in the font} if not mltex_enabled_p then goto found; if font_ec[f]>=qo(c) then if font_bc[f]<=qo(c) then if char_exists(orig_char_info(f)(c)) then {N.B.: not |char_info|(f)(c)} goto found; if qo(c)>=char_sub_def_min then if qo(c)<=char_sub_def_max then if char_list_exists(qo(c)) then begin base_c:=char_list_char(qo(c)); result:=qi(base_c); {return |base_c|} if not err_p then goto found; if font_ec[f]>=base_c then if font_bc[f]<=base_c then if char_exists(orig_char_info(f)(qi(base_c))) then goto found; end; if err_p then {print error and return existing character?} begin begin_diagnostic; print_nl("Missing character: There is no "); print("substitution for "); @.Missing character@> print_ASCII(qo(c)); print(" in font "); slow_print(font_name[f]); print_char("!"); end_diagnostic(false); result:=qi(font_bc[f]); {N.B.: not non-existing character |c|!} end; found: effective_char:=result; end; @ The function |effective_char_info| is equivalent to |char_info|, except it will return |null_character| if neither the character |c| exists in font |f| nor is there a substitution definition for |c|. (For these cases |char_info| using |effective_char| will access an undefined or invalid |font_info| entry. See the documentation of |effective_char| for more information.) @^inner loop@> @= function effective_char_info(@!f:internal_font_number; @!c:quarterword):four_quarters; label exit; var ci:four_quarters; {character information bytes for |c|} @!base_c:integer; {or |eightbits|: replacement base character} begin if not mltex_enabled_p then begin effective_char_info:=orig_char_info(f)(c); return; end; if font_ec[f]>=qo(c) then if font_bc[f]<=qo(c) then begin ci:=orig_char_info(f)(c); {N.B.: not |char_info|(f)(c)} if char_exists(ci) then begin effective_char_info:=ci; return; end; end; if qo(c)>=char_sub_def_min then if qo(c)<=char_sub_def_max then if char_list_exists(qo(c)) then begin {|effective_char_info:=char_info(f)(qi(char_list_char(qo(c))));|} base_c:=char_list_char(qo(c)); if font_ec[f]>=base_c then if font_bc[f]<=base_c then begin ci:=orig_char_info(f)(qi(base_c)); {N.B.: not |char_info|(f)(c)} if char_exists(ci) then begin effective_char_info:=ci; return; end; end; end; effective_char_info:=null_character; exit:end; @ This code is called for a virtual character |c| in |hlist_out| during |ship_out|. It tries to built a character substitution construct for |c| generating appropriate \.{DVI} code using the character substitution definition for this character. If a valid character substitution exists \.{DVI} code is created as if |make_accent| was used. In all other cases the status of the substitution for this character has been changed between the creation of the character node in the hlist and the output of the page---the created \.{DVI} code will be correct but the visual result will be undefined. Former ML\TeX\ versions have replaced the character node by a sequence of character, box, and accent kern nodes splicing them into the original horizontal list. This version does not do this to avoid a)~a memory overflow at this processing stage, b)~additional code to add a pointer to the previous node needed for the replacement, and c)~to avoid wrong code resulting in anomalies because of the use within a \.{\\leaders} box. @= begin @; found: @; @; end @ The global variables for the code to substitute a virtual character can be declared as local. Nonetheless we declare them as global to avoid stack overflows because |hlist_out| can be called recursively. @= @!accent_c,@!base_c,@!replace_c:integer; @!ia_c,@!ib_c:four_quarters; {accent and base character information} @!base_slant,@!accent_slant:real; {amount of slant} @!base_x_height:scaled; {accent is designed for characters of this height} @!base_width,@!base_height:scaled; {height and width for base character} @!accent_width,@!accent_height:scaled; {height and width for accent} @!delta:scaled; {amount of right shift} @ Get the character substitution information in |char_sub_code| for the character |c|. The current code checks that the substitution exists and is valid and all substitution characters exist in the font, so we can {\it not\/} substitute a character used in a substitution. This simplifies the code because we have not to check for cycles in all character substitution definitions. @= if qo(c)>=char_sub_def_min then if qo(c)<=char_sub_def_max then if char_list_exists(qo(c)) then begin base_c:=char_list_char(qo(c)); accent_c:=char_list_accent(qo(c)); if (font_ec[f]>=base_c) then if (font_bc[f]<=base_c) then if (font_ec[f]>=accent_c) then if (font_bc[f]<=accent_c) then begin ia_c:=char_info(f)(qi(accent_c)); ib_c:=char_info(f)(qi(base_c)); if char_exists(ib_c) then if char_exists(ia_c) then goto found; end; begin_diagnostic; print_nl("Missing character: Incomplete substitution "); @.Missing character@> print_ASCII(qo(c)); print(" = "); print_ASCII(accent_c); print(" "); print_ASCII(base_c); print(" in font "); slow_print(font_name[f]); print_char("!"); end_diagnostic(false); goto continue; end; begin_diagnostic; print_nl("Missing character: There is no "); print("substitution for "); @.Missing character@> print_ASCII(qo(c)); print(" in font "); slow_print(font_name[f]); print_char("!"); end_diagnostic(false); goto continue @ For |tracinglostchars>99| the substitution is shown in the log file. @= if tracing_lost_chars>99 then begin begin_diagnostic; print_nl("Using character substitution: "); print_ASCII(qo(c)); print(" = "); print_ASCII(accent_c); print(" "); print_ASCII(base_c); print(" in font "); slow_print(font_name[f]); print_char("."); end_diagnostic(false); end @ This outputs the accent and the base character given in the substitution. It uses code virtually identical to the |make_accent| procedure, but without the node creation steps. Additionally if the accent character has to be shifted vertically it does {\it not\/} create the same code. The original routine in |make_accent| and former versions of ML\TeX{} creates a box node resulting in |push| and |pop| operations, whereas this code simply produces vertical positioning operations. This can influence the pixel rounding algorithm in some \.{DVI} drivers---and therefore will probably be changed in one of the next ML\TeX{} versions. @= base_x_height:=x_height(f); base_slant:=slant(f)/float_constant(65536); @^real division@> accent_slant:=base_slant; {slant of accent character font} base_width:=char_width(f)(ib_c); base_height:=char_height(f)(height_depth(ib_c)); accent_width:=char_width(f)(ia_c); accent_height:=char_height(f)(height_depth(ia_c)); @/{compute necessary horizontal shift (don't forget slant)}@/ delta:=round((base_width-accent_width)/float_constant(2)+ base_height*base_slant-base_x_height*accent_slant); @^real multiplication@> @^real addition@> dvi_h:=cur_h; {update |dvi_h|, similar to the last statement in module 620} @/{1. For centering/horizontal shifting insert a kern node.}@/ cur_h:=cur_h+delta; synch_h; @/{2. Then insert the accent character possibly shifted up or down.}@/ if ((base_height<>base_x_height) and (accent_height>0)) then begin {the accent must be shifted up or down} cur_v:=base_line+(base_x_height-base_height); synch_v; if accent_c>=128 then dvi_out(set1); dvi_out(accent_c);@/ cur_v:=base_line; end else begin synch_v; if accent_c>=128 then dvi_out(set1); dvi_out(accent_c);@/ end; cur_h:=cur_h+accent_width; dvi_h:=cur_h; @/{3. For centering/horizontal shifting insert another kern node.}@/ cur_h:=cur_h+(-accent_width-delta); @/{4. Output the base character.}@/ synch_h; synch_v; if base_c>=128 then dvi_out(set1); dvi_out(base_c);@/ cur_h:=cur_h+base_width; dvi_h:=cur_h {update of |dvi_h| is unnecessary, will be set in module 620} @ Dumping ML\TeX-related material. This is just the flag in the format that tells us whether ML\TeX{} is enabled. @= dump_int(@"4D4C5458); {ML\TeX's magic constant: "MLTX"} if mltex_p then dump_int(1) else dump_int(0); @ Undump ML\TeX-related material, which is just a flag in the format that tells us whether ML\TeX{} is enabled. @= undump_int(x); {check magic constant of ML\TeX} if x<>@"4D4C5458 then goto bad_fmt; undump_int(x); {undump |mltex_p| flag into |mltex_enabled_p|} if x=1 then mltex_enabled_p:=true else if x<>0 then goto bad_fmt; @z @x [54.1379] l.24916 - extra routines @* \[55] Index. @y @* \[54] System-dependent changes. @= procedure insert_src_special; var toklist, p, q : pointer; begin if (source_filename_stack[in_open] > 0 and is_new_source (source_filename_stack[in_open] , line)) then begin toklist := get_avail; p := toklist; info(p) := cs_token_flag+frozen_special; link(p) := get_avail; p := link(p); info(p) := left_brace_token+"{"; q := str_toks (make_src_special (source_filename_stack[in_open], line)); link(p) := link(temp_head); p := q; link(p) := get_avail; p := link(p); info(p) := right_brace_token+"}"; ins_list (toklist); remember_source_info (source_filename_stack[in_open], line); end; end; procedure append_src_special; var q : pointer; begin if (source_filename_stack[in_open] > 0 and is_new_source (source_filename_stack[in_open] , line)) then begin new_whatsit (special_node, write_node_size); write_stream(tail) := 0; def_ref := get_avail; token_ref_count(def_ref) := null; q := str_toks (make_src_special (source_filename_stack[in_open], line)); link(def_ref) := link(temp_head); write_tokens(tail) := def_ref; remember_source_info (source_filename_stack[in_open], line); end; end; @ This function used to be in pdftex, but is useful in tex too. @p function get_nullstr: str_number; begin get_nullstr := ""; end; @* \[55] Index. @z