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+% mft.ch for C compilation with web2c.
+%
+% From Pierre Mackay's version for pc, which was in turn based on Howard
+% Trickey's and Pavel Curtis's change file for weave.
+% Support for MP included from a changefile by Wlodek Bzyl.
+% This file is in the public domain.
+
+@x [0] l.16 - WEAVE: use logo font to get the S
+\font\logo=manfnt % font used for the METAFONT logo
+@y
+\font\logo=logo10 % font used for the METAFONT logo
+\def\MP{{\logo META}\-{\logo POST}}
+@z
+
+@x [0] WEAVE: print changes only.
+\pageno=\contentspagenumber \advance\pageno by 1
+@y
+\pageno=\contentspagenumber \advance\pageno by 1
+\let\maybe=\iffalse
+\def\title{MFT changes for C and METAPOST}
+@z
+
+@x [1]
+This program converts a \MF\ source file to a \TeX\ file. It was written
+@y
+This program converts a \MF\ or \MP\ source file to a \TeX\ file.
+It was written
+@z
+@x [1]
+@^Knuth, Donald Ervin@>
+been developed in January, 1980.
+@y
+@^Knuth, Donald Ervin@>
+been developed in January, 1980.
+@^Bzyl, Wlodek@>
+Changes for \MP\ by W.~Bzyl in July, 2001.
+@z
+
+% [3] No need for the final label in C.
+% AIX defines `class' in <math.h>, so let's take this opportunity to
+% define that away.
+@x
+@d end_of_MFT = 9999 {go here to wrap it up}
+@y
+@d class == class_var
+@z
+
+@x [3] No global labels.
+label end_of_MFT; {go here to finish}
+@y
+@z
+
+@x [3]
+procedure initialize;
+ var @<Local variables for initialization@>@/
+ begin @<Set initial values@>@/
+@y
+@<Define |parse_arguments|@>
+procedure initialize;
+ var @<Local variables for initialization@>@/
+begin
+ kpse_set_program_name (argv[0], nil);
+ parse_arguments;
+ @<Set initial values@>;
+@z
+
+@x [8] Increase constants.
+@!max_bytes=10000; {the number of bytes in tokens; must be less than 65536}
+@!max_names=1000; {number of tokens}
+@y
+@!max_bytes=60000; {the number of bytes in tokens; must be less than 65536}
+@!max_names=6000; {number of tokens}
+@z
+@x
+@!buf_size=100; {maximum length of input line}
+@!line_length=80; {lines of \TeX\ output have at most this many characters,
+@y
+@!buf_size=3000; {maximum length of input line}
+@!line_length=79; {lines of \TeX\ output have at most this many characters,
+@z
+
+% [13] 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
+@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 [17] Allow any input character.
+for i:=0 to @'37 do xchr[i]:=' ';
+for i:=@'177 to @'377 do xchr[i]:=' ';
+@y
+for i:=1 to @'37 do xchr[i]:=chr(i);
+for i:=@'177 to @'377 do xchr[i]:=chr(i);
+@z
+
+@x [20] Terminal I/O.
+@d print(#)==write(term_out,#) {`|print|' means write on the terminal}
+@y
+@d term_out==stdout
+@d print(#)==write(term_out,#) {`|print|' means write on the terminal}
+@z
+
+% [20] Remove term_out.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+@x
+@<Globals...@>=
+@!term_out:text_file; {the terminal as an output file}
+@y
+@z
+
+@x [21] Don't initialize the terminal.
+@ Different systems have different ways of specifying that the output on a
+certain file will appear on the user's terminal. Here is one way to do this
+on the \PASCAL\ system that was used in \.{WEAVE}'s initial development:
+@^system dependencies@>
+
+@<Set init...@>=
+rewrite(term_out,'TTY:'); {send |term_out| output to the terminal}
+@y
+@ Different systems have different ways of specifying that the output on a
+certain file will appear on the user's terminal.
+@^system dependencies@>
+
+@<Set init...@>=
+{nothing need be done}
+@z
+
+@x [22] `break' is `fflush'.
+@d update_terminal == break(term_out) {empty the terminal output buffer}
+@y
+@d update_terminal == fflush(term_out) {empty the terminal output buffer}
+@z
+
+@x [24] Open input files.
+@ The following code opens the input files. Since these files were listed
+in the program header, we assume that the \PASCAL\ runtime system has
+already checked that suitable file names have been given; therefore no
+additional error checking needs to be done.
+@^system dependencies@>
+
+@p procedure open_input; {prepare to read the inputs}
+begin reset(mf_file); reset(change_file); reset(style_file);
+end;
+@y
+@ The following code opens the input files.
+@^system dependencies@>
+
+@p procedure open_input; {prepare to read inputs}
+begin
+ if metapost then
+ mf_file := kpse_open_file (cmdline (optind), kpse_mp_format)
+ else
+ mf_file := kpse_open_file (cmdline (optind), kpse_mf_format);
+ if change_name then begin
+ if metapost then
+ change_file := kpse_open_file (change_name, kpse_mp_format)
+ else
+ change_file := kpse_open_file (change_name, kpse_mf_format);
+ end;
+ style_file := kpse_open_file (style_name[0], kpse_mft_format);
+ i_style_name := 1;
+end;
+@z
+
+@x [26] Opening the .tex output file.
+rewrite(tex_file);
+@y
+rewrite (tex_file, tex_name);
+@z
+
+@x [28] Fix f^.
+ begin buffer[limit]:=xord[f^]; get(f);
+ incr(limit);
+ if buffer[limit-1]<>" " then final_limit:=limit;
+ if limit=buf_size then
+ begin while not eoln(f) do get(f);
+@y
+ begin buffer[limit]:=xord[getc(f)];
+ incr(limit);
+ if buffer[limit-1]<>" " then final_limit:=limit;
+ if limit=buf_size then
+ begin while not eoln(f) do vgetc(f);
+@z
+
+@x [31] Fix jump_out.
+@ The |jump_out| procedure just cuts across all active procedure levels
+and jumps out of the program. This is the only non-local \&{goto} statement
+in \.{MFT}. It is used when no recovery from a particular error has
+been provided.
+
+Some \PASCAL\ compilers do not implement non-local |goto| statements.
+@^system dependencies@>
+In such cases the code that appears at label |end_of_MFT| should be
+copied into the |jump_out| procedure, followed by a call to a system procedure
+that terminates the program.
+
+@d fatal_error(#)==begin new_line; print(#); error; mark_fatal; jump_out;
+ end
+
+@<Error handling...@>=
+procedure jump_out;
+begin goto end_of_MFT;
+end;
+@y
+@ The |jump_out| procedure cleans up, prints appropriate messages,
+and exits back to the operating system.
+
+@d fatal_error(#)==begin new_line; print(#); error; mark_fatal; jump_out;
+ end
+
+@<Error handling...@>=
+procedure jump_out;
+begin
+@t\4\4@>{here files should be closed if the operating system requires it}
+ @<Print the job |history|@>;
+ new_line;
+ if (history <> spotless) and (history <> harmless_message) then
+ uexit(1)
+ else
+ uexit(0);
+end;
+@z
+
+@x [47] -- allow for multiple style files
+@ @<Read from |style_file|...@>=
+begin incr(line);
+if not input_ln(style_file) then
+ begin styling:=false; line:=0;
+ end;
+end
+@y
+@ @<Read from |style_file|...@>=
+begin incr(line);
+if not input_ln(style_file) then begin
+ if i_style_name <> n_style_name then begin
+ xfclose(style_file,style_name[i_style_name-1]);
+ style_file := kpse_open_file (style_name[i_style_name], kpse_mft_format);
+ i_style_name := i_style_name + 1;
+ end
+ else begin
+ styling:=false;
+ end;
+ line:=0;
+ end;
+end
+@z
+
+% MFT incorrectly handles TeX code contained in groups:
+%
+% btex <TeX material> etex
+% verbatimtex <TeX material> etex
+%
+% Ulrik Vieth (using ideas of Andreas Scherer) developed a Unix
+% shell script which tries to correct errors made by MFT when
+% prettyprinting TeX material.
+% His script converts TeX material to a `TeXnical MFT comment',
+% which means that it is extracted and prettyprinted as string.
+% Unfortunately, his script assumes that these groups may not
+% extend across line breaks and there may be only one such
+% group per line, which is sometimes hard to obey and
+% makes prettyprinted code harder to read.
+% Moreover, any synonym for btex/verbatimtex/etex would not be
+% recognized. So, if we introduce a change in MFT's formatting
+% rules with
+% %%% btex my_btex
+% i.e. we instruct MFT to format token `my_btex' according the
+% current convention for `btex' token,
+% then this new convention would not be obeyed. It is so,
+% because the script has hardcoded btex/verbatimtex/etex names.
+
+@x [63]
+@d input_command=31 {internal code for tokens like `\.{input}'}
+@d special_tag=32 {internal code for tags that take at most one subscript}
+@d tag=33 {internal code for nonprimitive tokens}
+@y
+@d input_command=31 {internal code for tokens like `\.{input}'}
+@d btex_code=32 {begin \TeX\ material (\.{btex})}
+@d verbatim_code=33 {begin \TeX\ material (\.{verbatimtex})}
+@d etex_marker=34 {end \TeX\ material (\.{etex})}
+@d special_tag=35 {internal code for tags that take at most one subscript}
+@d tag=36 {internal code for nonprimitive tokens}
+@z
+
+% Now follows the simplest change -- although the bigest one.
+% The primitives of \MF\ and \MP\ are reshuffled into
+% three categories:
+% -- primitivies common for \MF\ and \MP
+% -- primitivies specific for \MF
+% -- primitivies specific for \MP
+
+@x [65]
+@ The intended use of the macros above might not be immediately obvious,
+but the riddle is answered by the following:
+
+@<Store all the primitives@>=
+id_loc:=18;@/
+pr2(".")(".")(path_join);@/
+pr1("[")(as_is);@/
+pr1("]")(as_is);@/
+pr1("}")(as_is);@/
+pr1("{")(as_is);@/
+pr1(":")(colon);@/
+pr2(":")(":")(colon);@/
+pr3("|")("|")(":")(colon);@/
+pr2(":")("=")(as_is);@/
+pr1(",")(as_is);@/
+pr1(";")(semicolon);@/
+pr1("\")(backslash);@/
+pr2("\")("\")(double_back);@/
+pr5("a")("d")("d")("t")("o")(command);@/
+pr2("a")("t")(bbinary);@/
+pr7("a")("t")("l")("e")("a")("s")("t")(op);@/
+pr10("b")("e")("g")("i")("n")("g")("r")("o")("u")("p")(command);
+pr8("c")("o")("n")("t")("r")("o")("l")("s")(op);@/
+pr4("c")("u")("l")("l")(command);@/
+pr4("c")("u")("r")("l")(op);@/
+pr10("d")("e")("l")("i")("m")("i")("t")("e")("r")("s")(command);@/
+pr7("d")("i")("s")("p")("l")("a")("y")(command);@/
+pr8("e")("n")("d")("g")("r")("o")("u")("p")(endit);@/
+pr8("e")("v")("e")("r")("y")("j")("o")("b")(command);@/
+pr6("e")("x")("i")("t")("i")("f")(command);@/
+pr11("e")("x")("p")("a")("n")("d")("a")("f")("t")("e")("r")(command);@/
+pr4("f")("r")("o")("m")(bbinary);@/
+pr8("i")("n")("w")("i")("n")("d")("o")("w")(bbinary);@/
+pr7("i")("n")("t")("e")("r")("i")("m")(command);@/
+pr3("l")("e")("t")(command);@/
+pr11("n")("e")("w")("i")("n")("t")("e")("r")("n")("a")("l")(command);@/
+pr2("o")("f")(command);@/
+pr10("o")("p")("e")("n")("w")("i")("n")("d")("o")("w")(command);@/
+pr10("r")("a")("n")("d")("o")("m")("s")("e")("e")("d")(command);@/
+pr4("s")("a")("v")("e")(command);@/
+pr10("s")("c")("a")("n")("t")("o")("k")("e")("n")("s")(command);@/
+pr7("s")("h")("i")("p")("o")("u")("t")(command);@/
+pr4("s")("t")("e")("p")(bbinary);@/
+pr3("s")("t")("r")(command);@/
+pr7("t")("e")("n")("s")("i")("o")("n")(op);@/
+pr2("t")("o")(bbinary);@/
+pr5("u")("n")("t")("i")("l")(bbinary);@/
+pr3("d")("e")("f")(command);@/
+pr6("v")("a")("r")("d")("e")("f")(command);@/
+
+@ (There are so many primitives, it's necessary to break this long
+initialization code up into pieces so as not to overflow \.{WEAVE}'s capacity.)
+
+@<Store all the primitives@>=
+pr10("p")("r")("i")("m")("a")("r")("y")("d")("e")("f")(command);@/
+pr12("s")("e")("c")("o")("n")("d")("a")("r")("y")("d")("e")("f")(command);@/
+pr11("t")("e")("r")("t")("i")("a")("r")("y")("d")("e")("f")(command);@/
+pr6("e")("n")("d")("d")("e")("f")(endit);@/
+pr3("f")("o")("r")(command);@/
+pr11("f")("o")("r")("s")("u")("f")("f")("i")("x")("e")("s")(command);@/
+pr7("f")("o")("r")("e")("v")("e")("r")(command);@/
+pr6("e")("n")("d")("f")("o")("r")(endit);@/
+pr5("q")("u")("o")("t")("e")(command);@/
+pr4("e")("x")("p")("r")(command);@/
+pr6("s")("u")("f")("f")("i")("x")(command);@/
+pr4("t")("e")("x")("t")(command);@/
+pr7("p")("r")("i")("m")("a")("r")("y")(command);@/
+pr9("s")("e")("c")("o")("n")("d")("a")("r")("y")(command);@/
+pr8("t")("e")("r")("t")("i")("a")("r")("y")(command);@/
+pr5("i")("n")("p")("u")("t")(input_command);@/
+pr8("e")("n")("d")("i")("n")("p")("u")("t")(bold);@/
+pr2("i")("f")(command);@/
+pr2("f")("i")(endit);@/
+pr4("e")("l")("s")("e")(command);@/
+pr6("e")("l")("s")("e")("i")("f")(command);@/
+pr4("t")("r")("u")("e")(bold);@/
+pr5("f")("a")("l")("s")("e")(bold);@/
+pr11("n")("u")("l")("l")("p")("i")("c")("t")("u")("r")("e")(bold);@/
+pr7("n")("u")("l")("l")("p")("e")("n")(bold);@/
+pr7("j")("o")("b")("n")("a")("m")("e")(bold);@/
+pr10("r")("e")("a")("d")("s")("t")("r")("i")("n")("g")(bold);@/
+pr9("p")("e")("n")("c")("i")("r")("c")("l")("e")(bold);@/
+pr4("g")("o")("o")("d")(special_tag);@/
+pr2("=")(":")(as_is);@/
+pr3("=")(":")("|")(as_is);@/
+pr4("=")(":")("|")(">")(as_is);@/
+pr3("|")("=")(":")(as_is);@/
+pr4("|")("=")(":")(">")(as_is);@/
+pr4("|")("=")(":")("|")(as_is);@/
+pr5("|")("=")(":")("|")(">")(as_is);@/
+pr6("|")("=")(":")("|")(">")(">")(as_is);@/
+pr4("k")("e")("r")("n")(binary);
+pr6("s")("k")("i")("p")("t")("o")(command);@/
+
+@ (Does anybody out there remember the commercials that went \.{LS-MFT}?)
+
+@<Store all the prim...@>=
+pr13("n")("o")("r")("m")("a")("l")("d")("e")("v")("i")("a")("t")("e")(op);@/
+pr3("o")("d")("d")(op);@/
+pr5("k")("n")("o")("w")("n")(op);@/
+pr7("u")("n")("k")("n")("o")("w")("n")(op);@/
+pr3("n")("o")("t")(op);@/
+pr7("d")("e")("c")("i")("m")("a")("l")(op);@/
+pr7("r")("e")("v")("e")("r")("s")("e")(op);@/
+pr8("m")("a")("k")("e")("p")("a")("t")("h")(op);@/
+pr7("m")("a")("k")("e")("p")("e")("n")(op);@/
+pr11("t")("o")("t")("a")("l")("w")("e")("i")("g")("h")("t")(op);@/
+pr3("o")("c")("t")(op);@/
+pr3("h")("e")("x")(op);@/
+pr5("A")("S")("C")("I")("I")(op);@/
+pr4("c")("h")("a")("r")(op);@/
+pr6("l")("e")("n")("g")("t")("h")(op);@/
+pr13("t")("u")("r")("n")("i")("n")("g")("n")("u")("m")("b")("e")("r")(op);@/
+pr5("x")("p")("a")("r")("t")(op);@/
+pr5("y")("p")("a")("r")("t")(op);@/
+pr6("x")("x")("p")("a")("r")("t")(op);@/
+pr6("x")("y")("p")("a")("r")("t")(op);@/
+pr6("y")("x")("p")("a")("r")("t")(op);@/
+pr6("y")("y")("p")("a")("r")("t")(op);@/
+pr4("s")("q")("r")("t")(op);@/
+pr4("m")("e")("x")("p")(op);@/
+pr4("m")("l")("o")("g")(op);@/
+pr4("s")("i")("n")("d")(op);@/
+pr4("c")("o")("s")("d")(op);@/
+pr5("f")("l")("o")("o")("r")(op);@/
+pr14("u")("n")("i")("f")("o")("r")("m")("d")("e")("v")("i")("a")("t")("e")(op);
+ @/
+pr10("c")("h")("a")("r")("e")("x")("i")("s")("t")("s")(op);@/
+pr5("a")("n")("g")("l")("e")(op);@/
+pr5("c")("y")("c")("l")("e")(op);@/
+
+@ (If you think this \.{WEB} code is ugly, you should see the Pascal code
+it produces.)
+
+@<Store all the primitives@>=
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("t")("i")("t")("l")("e")("s")(internal);@/
+pr16("t")("r")("a")("c")("i")("n")("g")
+ ("e")("q")("u")("a")("t")("i")("o")("n")("s")(internal);@/
+pr15("t")("r")("a")("c")("i")("n")("g")
+ ("c")("a")("p")("s")("u")("l")("e")("s")(internal);@/
+pr14("t")("r")("a")("c")("i")("n")("g")
+ ("c")("h")("o")("i")("c")("e")("s")(internal);@/
+pr12("t")("r")("a")("c")("i")("n")("g")
+ ("s")("p")("e")("c")("s")(internal);@/
+pr11("t")("r")("a")("c")("i")("n")("g")
+ ("p")("e")("n")("s")(internal);@/
+pr15("t")("r")("a")("c")("i")("n")("g")
+ ("c")("o")("m")("m")("a")("n")("d")("s")(internal);@/
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("m")("a")("c")("r")("o")("s")(internal);@/
+pr12("t")("r")("a")("c")("i")("n")("g")
+ ("e")("d")("g")("e")("s")(internal);@/
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("o")("u")("t")("p")("u")("t")(internal);@/
+pr12("t")("r")("a")("c")("i")("n")("g")
+ ("s")("t")("a")("t")("s")(internal);@/
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("o")("n")("l")("i")("n")("e")(internal);@/
+
+@ @<Store all the primitives@>=
+pr4("y")("e")("a")("r")(internal);@/
+pr5("m")("o")("n")("t")("h")(internal);@/
+pr3("d")("a")("y")(internal);@/
+pr4("t")("i")("m")("e")(internal);@/
+pr8("c")("h")("a")("r")("c")("o")("d")("e")(internal);@/
+pr7("c")("h")("a")("r")("f")("a")("m")(internal);@/
+pr6("c")("h")("a")("r")("w")("d")(internal);@/
+pr6("c")("h")("a")("r")("h")("t")(internal);@/
+pr6("c")("h")("a")("r")("d")("p")(internal);@/
+pr6("c")("h")("a")("r")("i")("c")(internal);@/
+pr6("c")("h")("a")("r")("d")("x")(internal);@/
+pr6("c")("h")("a")("r")("d")("y")(internal);@/
+pr10("d")("e")("s")("i")("g")("n")("s")("i")("z")("e")(internal);@/
+pr4("h")("p")("p")("p")(internal);@/
+pr4("v")("p")("p")("p")(internal);@/
+pr7("x")("o")("f")("f")("s")("e")("t")(internal);@/
+pr7("y")("o")("f")("f")("s")("e")("t")(internal);@/
+pr7("p")("a")("u")("s")("i")("n")("g")(internal);@/
+pr12("s")("h")("o")("w")
+ ("s")("t")("o")("p")("p")("i")("n")("g")(internal);@/
+pr10("f")("o")("n")("t")("m")("a")("k")("i")("n")("g")(internal);@/
+pr8("p")("r")("o")("o")("f")("i")("n")("g")(internal);@/
+pr9("s")("m")("o")("o")("t")("h")("i")("n")("g")(internal);@/
+pr12("a")("u")("t")("o")("r")("o")("u")("n")("d")("i")("n")("g")(internal);@/
+pr11("g")("r")("a")("n")("u")("l")("a")("r")("i")("t")("y")(internal);@/
+pr6("f")("i")("l")("l")("i")("n")(internal);@/
+pr12("t")("u")("r")("n")("i")("n")("g")("c")("h")("e")("c")("k")(internal);@/
+pr12("w")("a")("r")("n")("i")("n")("g")("c")("h")("e")("c")("k")(internal);@/
+pr12("b")("o")("u")("n")("d")("a")("r")("y")("c")("h")("a")("r")(internal);@/
+
+@ Still more.
+
+@<Store all the prim...@>=
+pr1("+")(abinary);@/
+pr1("-")(abinary);@/
+pr1("*")(abinary);@/
+pr1("/")(as_is);@/
+pr2("+")("+")(binary);@/
+pr3("+")("-")("+")(pyth_sub);@/
+pr3("a")("n")("d")(binary);@/
+pr2("o")("r")(binary);@/
+pr1("<")(as_is);@/
+pr2("<")("=")(less_or_equal);@/
+pr1(">")(as_is);@/
+pr2(">")("=")(greater_or_equal);@/
+pr1("=")(as_is);@/
+pr2("<")(">")(not_equal);@/
+pr9("s")("u")("b")("s")("t")("r")("i")("n")("g")(command);@/
+pr7("s")("u")("b")("p")("a")("t")("h")(command);@/
+pr13("d")("i")("r")("e")("c")("t")("i")("o")("n")@|
+ ("t")("i")("m")("e")(command);@/
+pr5("p")("o")("i")("n")("t")(command);@/
+pr10("p")("r")("e")("c")("o")("n")("t")("r")("o")("l")(command);@/
+pr11("p")("o")("s")("t")("c")("o")("n")("t")("r")("o")("l")(command);@/
+pr9("p")("e")("n")("o")("f")("f")("s")("e")("t")(command);@/
+pr1("&")(ampersand);@/
+pr7("r")("o")("t")("a")("t")("e")("d")(binary);@/
+pr7("s")("l")("a")("n")("t")("e")("d")(binary);@/
+pr6("s")("c")("a")("l")("e")("d")(binary);@/
+pr7("s")("h")("i")("f")("t")("e")("d")(binary);@/
+pr11("t")("r")("a")("n")("s")("f")("o")("r")("m")("e")("d")(binary);@/
+pr7("x")("s")("c")("a")("l")("e")("d")(binary);@/
+pr7("y")("s")("c")("a")("l")("e")("d")(binary);@/
+pr7("z")("s")("c")("a")("l")("e")("d")(binary);@/
+pr17("i")("n")("t")("e")("r")("s")("e")("c")("t")("i")("o")("n")@|
+ ("t")("i")("m")("e")("s")(binary);@/
+pr7("n")("u")("m")("e")("r")("i")("c")(type_name);@/
+pr6("s")("t")("r")("i")("n")("g")(type_name);@/
+pr7("b")("o")("o")("l")("e")("a")("n")(type_name);@/
+pr4("p")("a")("t")("h")(type_name);@/
+pr3("p")("e")("n")(type_name);@/
+pr7("p")("i")("c")("t")("u")("r")("e")(type_name);@/
+pr9("t")("r")("a")("n")("s")("f")("o")("r")("m")(type_name);@/
+pr4("p")("a")("i")("r")(type_name);@/
+
+@ At last we are done with the tedious initialization of primitives.
+
+@<Store all the prim...@>=
+pr3("e")("n")("d")(endit);@/
+pr4("d")("u")("m")("p")(endit);@/
+pr9("b")("a")("t")("c")("h")("m")("o")("d")("e")(bold);
+pr11("n")("o")("n")("s")("t")("o")("p")("m")("o")("d")("e")(bold);
+pr10("s")("c")("r")("o")("l")("l")("m")("o")("d")("e")(bold);
+pr13("e")("r")("r")("o")("r")("s")("t")("o")("p")@|
+ ("m")("o")("d")("e")(bold);
+pr5("i")("n")("n")("e")("r")(command);@/
+pr5("o")("u")("t")("e")("r")(command);@/
+pr9("s")("h")("o")("w")("t")("o")("k")("e")("n")(command);@/
+pr9("s")("h")("o")("w")("s")("t")("a")("t")("s")(bold);@/
+pr4("s")("h")("o")("w")(command);@/
+pr12("s")("h")("o")("w")("v")("a")("r")("i")("a")("b")("l")("e")(command);@/
+pr16("s")("h")("o")("w")@|
+ ("d")("e")("p")("e")("n")("d")("e")("n")("c")("i")("e")("s")(bold);@/
+pr7("c")("o")("n")("t")("o")("u")("r")(command);@/
+pr10("d")("o")("u")("b")("l")("e")("p")("a")("t")("h")(command);@/
+pr4("a")("l")("s")("o")(command);@/
+pr7("w")("i")("t")("h")("p")("e")("n")(command);@/
+pr10("w")("i")("t")("h")("w")("e")("i")("g")("h")("t")(command);@/
+pr8("d")("r")("o")("p")("p")("i")("n")("g")(command);@/
+pr7("k")("e")("e")("p")("i")("n")("g")(command);@/
+pr7("m")("e")("s")("s")("a")("g")("e")(command);@/
+pr10("e")("r")("r")("m")("e")("s")("s")("a")("g")("e")(command);@/
+pr7("e")("r")("r")("h")("e")("l")("p")(command);@/
+pr8("c")("h")("a")("r")("l")("i")("s")("t")(command);@/
+pr8("l")("i")("g")("t")("a")("b")("l")("e")(command);@/
+pr10("e")("x")("t")("e")("n")("s")("i")("b")("l")("e")(command);@/
+pr10("h")("e")("a")("d")("e")("r")("b")("y")("t")("e")(command);@/
+pr9("f")("o")("n")("t")("d")("i")("m")("e")("n")(command);@/
+pr7("s")("p")("e")("c")("i")("a")("l")(command);@/
+pr10("n")("u")("m")("s")("p")("e")("c")("i")("a")("l")(command);@/
+pr1("%")(comment);@/
+pr2("%")("%")(verbatim);@/
+pr3("%")("%")("%")(set_format);@/
+pr4("%")("%")("%")("%")(mft_comment);@/
+pr1("#")(sharp);@/
+@y
+@ We begin with primitives common to \MF\ and \MP.
+
+The intended use of the macros above might not be immediately obvious,
+but the riddle is answered by the following:
+
+@<Store all the primitives@>=
+id_loc:=18;@/
+pr2(".")(".")(path_join);@/
+pr1("[")(as_is);@/
+pr1("]")(as_is);@/
+pr1("}")(as_is);@/
+pr1("{")(as_is);@/
+pr1(":")(colon);@/
+pr2(":")(":")(colon);@/
+pr3("|")("|")(":")(colon);@/
+pr2(":")("=")(as_is);@/
+pr1(",")(as_is);@/
+pr1(";")(semicolon);@/
+pr1("\")(backslash);@/
+pr2("\")("\")(double_back);@/
+pr5("a")("d")("d")("t")("o")(command);@/
+pr2("a")("t")(bbinary);@/
+pr7("a")("t")("l")("e")("a")("s")("t")(op);@/
+pr10("b")("e")("g")("i")("n")("g")("r")("o")("u")("p")(command);
+pr8("c")("o")("n")("t")("r")("o")("l")("s")(op);@/
+pr4("c")("u")("l")("l")(command);@/
+pr4("c")("u")("r")("l")(op);@/
+pr10("d")("e")("l")("i")("m")("i")("t")("e")("r")("s")(command);@/
+pr8("e")("n")("d")("g")("r")("o")("u")("p")(endit);@/
+pr8("e")("v")("e")("r")("y")("j")("o")("b")(command);@/
+pr6("e")("x")("i")("t")("i")("f")(command);@/
+pr11("e")("x")("p")("a")("n")("d")("a")("f")("t")("e")("r")(command);@/
+pr4("f")("r")("o")("m")(bbinary);@/
+pr7("i")("n")("t")("e")("r")("i")("m")(command);@/
+pr3("l")("e")("t")(command);@/
+pr11("n")("e")("w")("i")("n")("t")("e")("r")("n")("a")("l")(command);@/
+pr2("o")("f")(command);@/
+pr10("r")("a")("n")("d")("o")("m")("s")("e")("e")("d")(command);@/
+pr4("s")("a")("v")("e")(command);@/
+pr10("s")("c")("a")("n")("t")("o")("k")("e")("n")("s")(command);@/
+pr7("s")("h")("i")("p")("o")("u")("t")(command);@/
+pr4("s")("t")("e")("p")(bbinary);@/
+pr3("s")("t")("r")(command);@/
+pr7("t")("e")("n")("s")("i")("o")("n")(op);@/
+pr2("t")("o")(bbinary);@/
+pr5("u")("n")("t")("i")("l")(bbinary);@/
+pr3("d")("e")("f")(command);@/
+pr6("v")("a")("r")("d")("e")("f")(command);@/
+
+@ (There are so many primitives, it's necessary to break this long
+initialization code up into pieces so as not to overflow \.{WEAVE}'s capacity.)
+
+@<Store all the primitives@>=
+pr10("p")("r")("i")("m")("a")("r")("y")("d")("e")("f")(command);@/
+pr12("s")("e")("c")("o")("n")("d")("a")("r")("y")("d")("e")("f")(command);@/
+pr11("t")("e")("r")("t")("i")("a")("r")("y")("d")("e")("f")(command);@/
+pr6("e")("n")("d")("d")("e")("f")(endit);@/
+pr3("f")("o")("r")(command);@/
+pr11("f")("o")("r")("s")("u")("f")("f")("i")("x")("e")("s")(command);@/
+pr7("f")("o")("r")("e")("v")("e")("r")(command);@/
+pr6("e")("n")("d")("f")("o")("r")(endit);@/
+pr5("q")("u")("o")("t")("e")(command);@/
+pr4("e")("x")("p")("r")(command);@/
+pr6("s")("u")("f")("f")("i")("x")(command);@/
+pr4("t")("e")("x")("t")(command);@/
+pr7("p")("r")("i")("m")("a")("r")("y")(command);@/
+pr9("s")("e")("c")("o")("n")("d")("a")("r")("y")(command);@/
+pr8("t")("e")("r")("t")("i")("a")("r")("y")(command);@/
+pr5("i")("n")("p")("u")("t")(input_command);@/
+pr8("e")("n")("d")("i")("n")("p")("u")("t")(bold);@/
+pr2("i")("f")(command);@/
+pr2("f")("i")(endit);@/
+pr4("e")("l")("s")("e")(command);@/
+pr6("e")("l")("s")("e")("i")("f")(command);@/
+pr4("t")("r")("u")("e")(bold);@/
+pr5("f")("a")("l")("s")("e")(bold);@/
+pr11("n")("u")("l")("l")("p")("i")("c")("t")("u")("r")("e")(bold);@/
+pr7("n")("u")("l")("l")("p")("e")("n")(bold);@/
+pr7("j")("o")("b")("n")("a")("m")("e")(bold);@/
+pr10("r")("e")("a")("d")("s")("t")("r")("i")("n")("g")(bold);@/
+pr9("p")("e")("n")("c")("i")("r")("c")("l")("e")(bold);@/
+pr2("=")(":")(as_is);@/
+pr3("=")(":")("|")(as_is);@/
+pr4("=")(":")("|")(">")(as_is);@/
+pr3("|")("=")(":")(as_is);@/
+pr4("|")("=")(":")(">")(as_is);@/
+pr4("|")("=")(":")("|")(as_is);@/
+pr5("|")("=")(":")("|")(">")(as_is);@/
+pr6("|")("=")(":")("|")(">")(">")(as_is);@/
+pr4("k")("e")("r")("n")(binary);
+pr6("s")("k")("i")("p")("t")("o")(command);@/
+
+@ (Does anybody out there remember the commercials that went \.{LS-MFT}?)
+
+@<Store all the prim...@>=
+pr13("n")("o")("r")("m")("a")("l")("d")("e")("v")("i")("a")("t")("e")(op);@/
+pr3("o")("d")("d")(op);@/
+pr5("k")("n")("o")("w")("n")(op);@/
+pr7("u")("n")("k")("n")("o")("w")("n")(op);@/
+pr3("n")("o")("t")(op);@/
+pr7("d")("e")("c")("i")("m")("a")("l")(op);@/
+pr7("r")("e")("v")("e")("r")("s")("e")(op);@/
+pr8("m")("a")("k")("e")("p")("a")("t")("h")(op);@/
+pr7("m")("a")("k")("e")("p")("e")("n")(op);@/
+pr3("o")("c")("t")(op);@/
+pr3("h")("e")("x")(op);@/
+pr5("A")("S")("C")("I")("I")(op);@/
+pr4("c")("h")("a")("r")(op);@/
+pr6("l")("e")("n")("g")("t")("h")(op);@/
+pr13("t")("u")("r")("n")("i")("n")("g")("n")("u")("m")("b")("e")("r")(op);@/
+pr5("x")("p")("a")("r")("t")(op);@/
+pr5("y")("p")("a")("r")("t")(op);@/
+pr6("x")("x")("p")("a")("r")("t")(op);@/
+pr6("x")("y")("p")("a")("r")("t")(op);@/
+pr6("y")("x")("p")("a")("r")("t")(op);@/
+pr6("y")("y")("p")("a")("r")("t")(op);@/
+pr4("s")("q")("r")("t")(op);@/
+pr4("m")("e")("x")("p")(op);@/
+pr4("m")("l")("o")("g")(op);@/
+pr4("s")("i")("n")("d")(op);@/
+pr4("c")("o")("s")("d")(op);@/
+pr5("f")("l")("o")("o")("r")(op);@/
+pr14("u")("n")("i")("f")("o")("r")("m")("d")("e")("v")("i")("a")("t")("e")(op);
+ @/
+pr10("c")("h")("a")("r")("e")("x")("i")("s")("t")("s")(op);@/
+pr5("a")("n")("g")("l")("e")(op);@/
+pr5("c")("y")("c")("l")("e")(op);@/
+
+@ (If you think this \.{WEB} code is ugly, you should see the Pascal code
+it produces.)
+
+@<Store all the primitives@>=
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("t")("i")("t")("l")("e")("s")(internal);@/
+pr16("t")("r")("a")("c")("i")("n")("g")
+ ("e")("q")("u")("a")("t")("i")("o")("n")("s")(internal);@/
+pr15("t")("r")("a")("c")("i")("n")("g")
+ ("c")("a")("p")("s")("u")("l")("e")("s")(internal);@/
+pr14("t")("r")("a")("c")("i")("n")("g")
+ ("c")("h")("o")("i")("c")("e")("s")(internal);@/
+pr12("t")("r")("a")("c")("i")("n")("g")
+ ("s")("p")("e")("c")("s")(internal);@/
+pr11("t")("r")("a")("c")("i")("n")("g")
+ ("p")("e")("n")("s")(internal);@/
+pr15("t")("r")("a")("c")("i")("n")("g")
+ ("c")("o")("m")("m")("a")("n")("d")("s")(internal);@/
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("m")("a")("c")("r")("o")("s")(internal);@/
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("o")("u")("t")("p")("u")("t")(internal);@/
+pr12("t")("r")("a")("c")("i")("n")("g")
+ ("s")("t")("a")("t")("s")(internal);@/
+pr13("t")("r")("a")("c")("i")("n")("g")
+ ("o")("n")("l")("i")("n")("e")(internal);@/
+
+@ @<Store all the primitives@>=
+pr4("y")("e")("a")("r")(internal);@/
+pr5("m")("o")("n")("t")("h")(internal);@/
+pr3("d")("a")("y")(internal);@/
+pr4("t")("i")("m")("e")(internal);@/
+pr8("c")("h")("a")("r")("c")("o")("d")("e")(internal);@/
+pr6("c")("h")("a")("r")("w")("d")(internal);@/
+pr6("c")("h")("a")("r")("h")("t")(internal);@/
+pr6("c")("h")("a")("r")("d")("p")(internal);@/
+pr6("c")("h")("a")("r")("i")("c")(internal);@/
+pr6("c")("h")("a")("r")("d")("x")(internal);@/
+pr6("c")("h")("a")("r")("d")("y")(internal);@/
+pr10("d")("e")("s")("i")("g")("n")("s")("i")("z")("e")(internal);@/
+pr7("x")("o")("f")("f")("s")("e")("t")(internal);@/
+pr7("y")("o")("f")("f")("s")("e")("t")(internal);@/
+pr7("p")("a")("u")("s")("i")("n")("g")(internal);@/
+pr12("s")("h")("o")("w")
+ ("s")("t")("o")("p")("p")("i")("n")("g")(internal);@/
+pr10("f")("o")("n")("t")("m")("a")("k")("i")("n")("g")(internal);@/
+pr8("p")("r")("o")("o")("f")("i")("n")("g")(internal);@/
+pr12("t")("u")("r")("n")("i")("n")("g")("c")("h")("e")("c")("k")(internal);@/
+pr12("w")("a")("r")("n")("i")("n")("g")("c")("h")("e")("c")("k")(internal);@/
+pr12("b")("o")("u")("n")("d")("a")("r")("y")("c")("h")("a")("r")(internal);@/
+
+@ Still more.
+
+@<Store all the prim...@>=
+pr1("+")(abinary);@/
+pr1("-")(abinary);@/
+pr1("*")(abinary);@/
+pr1("/")(as_is);@/
+pr2("+")("+")(binary);@/
+pr3("+")("-")("+")(pyth_sub);@/
+pr3("a")("n")("d")(binary);@/
+pr2("o")("r")(binary);@/
+pr1("<")(as_is);@/
+pr2("<")("=")(less_or_equal);@/
+pr1(">")(as_is);@/
+pr2(">")("=")(greater_or_equal);@/
+pr1("=")(as_is);@/
+pr2("<")(">")(not_equal);@/
+pr9("s")("u")("b")("s")("t")("r")("i")("n")("g")(command);@/
+pr7("s")("u")("b")("p")("a")("t")("h")(command);@/
+pr13("d")("i")("r")("e")("c")("t")("i")("o")("n")@|
+ ("t")("i")("m")("e")(command);@/
+pr5("p")("o")("i")("n")("t")(command);@/
+pr10("p")("r")("e")("c")("o")("n")("t")("r")("o")("l")(command);@/
+pr11("p")("o")("s")("t")("c")("o")("n")("t")("r")("o")("l")(command);@/
+pr9("p")("e")("n")("o")("f")("f")("s")("e")("t")(command);@/
+pr1("&")(ampersand);@/
+pr7("r")("o")("t")("a")("t")("e")("d")(binary);@/
+pr7("s")("l")("a")("n")("t")("e")("d")(binary);@/
+pr6("s")("c")("a")("l")("e")("d")(binary);@/
+pr7("s")("h")("i")("f")("t")("e")("d")(binary);@/
+pr11("t")("r")("a")("n")("s")("f")("o")("r")("m")("e")("d")(binary);@/
+pr7("x")("s")("c")("a")("l")("e")("d")(binary);@/
+pr7("y")("s")("c")("a")("l")("e")("d")(binary);@/
+pr7("z")("s")("c")("a")("l")("e")("d")(binary);@/
+pr17("i")("n")("t")("e")("r")("s")("e")("c")("t")("i")("o")("n")@|
+ ("t")("i")("m")("e")("s")(binary);@/
+pr7("n")("u")("m")("e")("r")("i")("c")(type_name);@/
+pr6("s")("t")("r")("i")("n")("g")(type_name);@/
+pr7("b")("o")("o")("l")("e")("a")("n")(type_name);@/
+pr4("p")("a")("t")("h")(type_name);@/
+pr3("p")("e")("n")(type_name);@/
+pr7("p")("i")("c")("t")("u")("r")("e")(type_name);@/
+pr9("t")("r")("a")("n")("s")("f")("o")("r")("m")(type_name);@/
+pr4("p")("a")("i")("r")(type_name);@/
+
+@ At last we are done with the tedious initialization of primitives.
+
+@<Store all the prim...@>=
+pr3("e")("n")("d")(endit);@/
+pr4("d")("u")("m")("p")(endit);@/
+pr9("b")("a")("t")("c")("h")("m")("o")("d")("e")(bold);
+pr11("n")("o")("n")("s")("t")("o")("p")("m")("o")("d")("e")(bold);
+pr10("s")("c")("r")("o")("l")("l")("m")("o")("d")("e")(bold);
+pr13("e")("r")("r")("o")("r")("s")("t")("o")("p")@|
+ ("m")("o")("d")("e")(bold);
+pr5("i")("n")("n")("e")("r")(command);@/
+pr5("o")("u")("t")("e")("r")(command);@/
+pr9("s")("h")("o")("w")("t")("o")("k")("e")("n")(command);@/
+pr9("s")("h")("o")("w")("s")("t")("a")("t")("s")(bold);@/
+pr4("s")("h")("o")("w")(command);@/
+pr12("s")("h")("o")("w")("v")("a")("r")("i")("a")("b")("l")("e")(command);@/
+pr16("s")("h")("o")("w")@|
+ ("d")("e")("p")("e")("n")("d")("e")("n")("c")("i")("e")("s")(bold);@/
+pr7("c")("o")("n")("t")("o")("u")("r")(command);@/
+pr10("d")("o")("u")("b")("l")("e")("p")("a")("t")("h")(command);@/
+pr4("a")("l")("s")("o")(command);@/
+pr7("w")("i")("t")("h")("p")("e")("n")(command);@/
+pr7("m")("e")("s")("s")("a")("g")("e")(command);@/
+pr10("e")("r")("r")("m")("e")("s")("s")("a")("g")("e")(command);@/
+pr7("e")("r")("r")("h")("e")("l")("p")(command);@/
+pr8("c")("h")("a")("r")("l")("i")("s")("t")(command);@/
+pr8("l")("i")("g")("t")("a")("b")("l")("e")(command);@/
+pr10("e")("x")("t")("e")("n")("s")("i")("b")("l")("e")(command);@/
+pr10("h")("e")("a")("d")("e")("r")("b")("y")("t")("e")(command);@/
+pr9("f")("o")("n")("t")("d")("i")("m")("e")("n")(command);@/
+pr7("s")("p")("e")("c")("i")("a")("l")(command);@/
+pr1("%")(comment);@/
+pr2("%")("%")(verbatim);@/
+pr3("%")("%")("%")(set_format);@/
+pr4("%")("%")("%")("%")(mft_comment);@/
+pr1("#")(sharp);@/
+pr4("g")("o")("o")("d")(special_tag);@/
+
+@ Store primitives specific for \MF.
+
+@<Store all the prim...@>=
+if not metapost then begin
+ pr12("a")("u")("t")("o")("r")("o")("u")("n")("d")("i")("n")("g")(internal);@/
+ pr7("c")("h")("a")("r")("f")("a")("m")(internal);@/
+ pr8("d")("r")("o")("p")("p")("i")("n")("g")(command);@/
+ pr7("d")("i")("s")("p")("l")("a")("y")(command);@/
+ pr6("f")("i")("l")("l")("i")("n")(internal);@/
+ pr11("g")("r")("a")("n")("u")("l")("a")("r")("i")("t")("y")(internal);@/
+ pr8("i")("n")("w")("i")("n")("d")("o")("w")(bbinary);@/
+ pr4("h")("p")("p")("p")(internal);@/
+ pr7("k")("e")("e")("p")("i")("n")("g")(command);@/
+ pr10("n")("u")("m")("s")("p")("e")("c")("i")("a")("l")(command);@/
+ pr10("o")("p")("e")("n")("w")("i")("n")("d")("o")("w")(command);@/
+ pr9("s")("m")("o")("o")("t")("h")("i")("n")("g")(internal);@/
+ pr4("v")("p")("p")("p")(internal);@/
+ pr11("t")("o")("t")("a")("l")("w")("e")("i")("g")("h")("t")(op);@/
+ pr12("t")("r")("a")("c")("i")("n")("g")("e")("d")("g")("e")("s")(internal);@/
+ pr10("w")("i")("t")("h")("w")("e")("i")("g")("h")("t")(command);@/
+end;
+
+@ Store primitives specific for \MP.
+
+@<Store all the prim...@>=
+if metapost then begin
+ pr9("a")("r")("c")("l")("e")("n")("g")("t")("h")(op);@/
+ pr7("a")("r")("c")("t")("i")("m")("e")(command);@/
+ pr8("b")("l")("u")("e")("p")("a")("r")("t")(op);@/
+ pr7("b")("o")("u")("n")("d")("e")("d")(op);@/
+ pr4("b")("t")("e")("x")(btex_code);@/
+ pr4("c")("l")("i")("p")(command);@/
+ pr7("c")("l")("i")("p")("p")("e")("d")(op);@/
+ pr9("c")("l")("o")("s")("e")("f")("r")("o")("m")(input_command);@/
+ pr5("c")("o")("l")("o")("r")(type_name);@/
+ pr6("d")("a")("s")("h")("e")("d")(command);@/
+ pr8("d")("a")("s")("h")("p")("a")("r")("t")(op);@/
+ pr4("e")("t")("e")("x")(etex_marker);@/
+ pr6("f")("i")("l")("l")("e")("d")(op);@/
+ pr8("f")("o")("n")("t")("p")("a")("r")("t")(op);@/
+ pr8("f")("o")("n")("t")("s")("i")("z")("e")(op);@/
+ pr9("g")("r")("e")("e")("n")("p")("a")("r")("t")(op);@/
+ pr6("i")("n")("f")("o")("n")("t")(binary);@/
+ pr8("l")("i")("n")("e")("j")("o")("i")("n")(internal);@/
+ pr7("l")("i")("n")("e")("c")("a")("p")(internal);@/
+ pr8("l")("l")("c")("o")("r")("n")("e")("r")(op);@/
+ pr8("l")("r")("c")("o")("r")("n")("e")("r")(op);@/
+ pr10("m")("i")("t")("e")("r")("l")("i")("m")("i")("t")(internal);@/
+ pr8("m")("p")("x")("b")("r")("e")("a")("k")(bold);@/
+ pr8("p")("a")("t")("h")("p")("a")("r")("t")(op);@/
+ pr7("p")("e")("n")("p")("a")("r")("t")(op);@/
+ pr9("p")("r")("o")("l")("o")("g")("u")("e")("s")(internal);@/
+ pr7("r")("e")("d")("p")("a")("r")("t")(op);@/
+ pr8("r")("e")("a")("d")("f")("r")("o")("m")(input_command);@/
+ pr9("s")("e")("t")("b")("o")("u")("n")("d")("s")(command);@/
+ pr7("s")("t")("r")("o")("k")("e")("d")(op);@/
+ pr8("t")("e")("x")("t")("p")("a")("r")("t")(op);@/
+ pr7("t")("e")("x")("t")("u")("a")("l")(op);@/
+ pr16("t")("r")("a")("c")("i")("n")("g")
+ ("l")("o")("s")("t")("c")("h")("a")("r")("s")(internal);@/
+ pr11("t")("r")("u")("e")("c")("o")("r")("n")("e")("r")("s")(internal);@/
+ pr8("u")("l")("c")("o")("r")("n")("e")("r")(op);@/
+ pr8("u")("r")("c")("o")("r")("n")("e")("r")(op);@/
+ pr11("v")("e")("r")("b")("a")("t")("i")("m")("t")("e")("x")(verbatim_code);@/
+ pr6("w")("i")("t")("h")("i")("n")(bbinary);@/
+ pr9("w")("i")("t")("h")("c")("o")("l")("o")("r")(command);@/
+ pr5("w")("r")("i")("t")("e")(command);@/
+end;
+@z
+
+% The code below follows ideas from the section 646 of `mp.web'.
+@x [75]
+two global variables, |cur_type| and |cur_tok|.
+@y
+two global variables, |cur_type| and |cur_tok|.
+
+The \&{btex}$\,\ldots\,$\&{etex} and \&{verbatimtex}$\,\ldots\,$\&{etex}
+features need to be implemented at a low level in the scanning
+process. This is implemented by changing the behavior of the
+scanner via |scanner_status| global variable.
+
+@d normal=0 {|scanner_status| at ``quiet times''}
+@d verbatimtex_flushing=1 {|scanner_status| when moving verbatim \TeX\ material}
+@d btex_flushing=2 {|scanner_status| when moving \TeX\ code}
+@z
+
+@x [75]
+@!prev_tok:integer; {previous value of |cur_tok|}
+@y
+@!prev_tok:integer; {previous value of |cur_tok|}
+@!scanner_status:normal..btex_flushing; {are we scanning at high speed?}
+@z
+
+@x [79] Allow any 8 bit character in input.
+for i:=0 to " "-1 do char_class[i]:=invalid_class;
+char_class[carriage_return]:=end_line_class;@/
+for i:=127 to 255 do char_class[i]:=invalid_class;
+@y
+for i:=0 to " "-1 do char_class[i]:=letter_class;
+for i:=127 to 255 do char_class[i]:=letter_class;
+char_class[carriage_return]:=end_line_class;
+char_class[@'11]:=space_class; {tab}
+char_class[@'14]:=space_class; {form feed}
+@z
+
+% When dealing with a TeX material we must copy spaces to output.
+@x [81]
+space_class:if start_of_line then emit(indentation)
+ else goto switch;
+@y
+space_class:if start_of_line or scanner_status>normal then emit(indentation)
+ else goto switch;
+@z
+
+% Set the default set of macros for \MP.
+@x [88]
+so that the first line of the output file will be `\.{\\input mftmac}'.
+@.\\input mftmac@>
+@.mftmac@>
+
+@<Set init...@>=
+out_ptr:=1; out_buf[1]:=" "; out_line:=1; write(tex_file,'\input mftmac');
+@y
+so that the first line of the output file will be `\.{\\input mftmac}'
+or `\.{\\input mptmac}' if a \MP\ file is converted.
+@.\\input mftmac@>
+@.mftmac@>
+@.\\input mptmac@>
+@.mptmac@>
+@<Set init...@>=
+out_ptr:=1; out_buf[1]:=" "; out_line:=1;
+if metapost then begin write(tex_file,'\input mptmac'); end
+else write(tex_file,'\input mftmac');
+@z
+
+@x [97]
+ string_token:@<Translate a string token@>;
+@y
+ string_token:@<Translate a string token@>;
+ verbatim_code,btex_code:@<Copy \TeX\ material@>;
+@z
+
+% Here an extra section is added.
+%
+% `btex' token is translated to `\mftbeginB' and
+% `verbatimtex' to `\mftbeginV'.
+% `etex' is translated to `\mftend'.
+% These \TeX\ macros are defined in \.{mptmac.tex}.
+@x [98]
+@ @<Do special actions at the start of a line@>=
+@y
+@ @<Copy \TeX\ material@>=
+ begin out4("\")("m")("f")("t"); out5("b")("e")("g")("i")("n");
+ if cur_type=verbatim_code then begin
+ out("V");
+ scanner_status:=verbatimtex_flushing;
+ end else if cur_type=btex_code then begin
+ out("B");
+ scanner_status:=btex_flushing;
+ end;
+ out("{"); out_name(cur_tok); out("}");
+ get_next;
+ while cur_type<>etex_marker do begin
+ if cur_type=indentation then begin out(" "); end
+ else if cur_type=end_of_line then begin
+ flush_buffer(out_ptr,false);
+ empty_buffer:=true;
+ end
+ else copy(id_first);
+ get_next;
+ end;
+ out4("\")("m")("f")("t"); out3("e")("n")("d");
+ out("{"); out_name(cur_tok); out("}");
+ if scanner_status=verbatimtex_flushing then out("$");
+ scanner_status:=normal;
+ end
+@ @<Do special actions at the start of a line@>=
+@z
+
+% [112] Print newline at end of run, exit based upon value of history,
+% and remove the end_of_MFT label.
+@x
+print_ln(banner); {print a ``banner line''}
+@y
+print (banner); {print a ``banner line''}
+print_ln (version_string);
+@z
+
+@x
+end_of_MFT:{here files should be closed if the operating system requires it}
+@<Print the job |history|@>;
+end.
+@y
+@<Print the job |history|@>;
+new_line;
+if (history <> spotless) and (history <> harmless_message)
+then uexit (1)
+else uexit (0);
+end.
+@z
+
+@x [114] System-dependent changes.
+This module should be replaced, if necessary, by changes to the program
+that are necessary to make \.{MFT} work at a particular installation.
+It is usually best to design your change file so that all changes to
+previous modules preserve the module numbering; then everybody's version
+will be consistent with the printed program. More extensive changes,
+which introduce new modules, can be inserted here; then only the index
+itself will get a new module number.
+@^system dependencies@>
+@y
+The user calls \.{MFT} with arguments on the command line. These are
+either filenames or flags (beginning with `\.-'). The following globals
+are for communicating the user's desires to the rest of the program. The
+various |name| variables contain strings with the full names of those
+files, as UNIX knows them.
+
+@d max_style_name = 32
+
+@<Globals...@>=
+@!change_name,@!tex_name:c_string;
+@!style_name:array[0..max_style_name-1] of c_string;
+@!n_style_name:c_int_type; {Number of values in |style_name| array.}
+@!i_style_name:c_int_type; {The next |style_name|.}
+@!metapost:c_int_type; {|true| for \MF, |false| for \MP}
+
+@ Look at the command line arguments and set the |name| variables accordingly.
+
+At least one file name must be present as the first argument: the \.{mf}
+file. It may have an extension, or it may omit it to get |'.mf'| added.
+If there is only one file name, the output file name is formed by
+replacing the \.{mf} file name extension by |'.tex'|. Thus, the command
+line \.{mf foo} implies the use of the \MF\ input file \.{foo.mf}
+and the output file \.{foo.tex}. If this style of command line, with
+only one argument, is used, the default style file, |plain.mft|, will be
+used to provide basic formatting.
+
+@d argument_is (#) == (strcmp (long_options[option_index].name, #) = 0)
+
+@<Define |parse_arguments|@> =
+procedure parse_arguments;
+const n_options = 5; {Pascal won't count array lengths for us.}
+var @!long_options: array[0..n_options] of getopt_struct;
+ @!getopt_return_val: integer;
+ @!option_index: c_int_type;
+ @!current_option: 0..n_options;
+ @!suffix: c_string;
+begin
+ @<Initialize the option variables@>;
+ @<Define the option table@>;
+ n_style_name := 0;
+ repeat
+ getopt_return_val := getopt_long_only (argc, argv, '', long_options,
+ address_of (option_index));
+ if getopt_return_val = -1 then begin
+ {End of arguments; we exit the loop below.} ;
+
+ end else if getopt_return_val = "?" then begin
+ usage ('mft');
+
+ end else if argument_is ('help') then begin
+ usage_help (MFT_HELP, nil);
+
+ end else if argument_is ('version') then begin
+ print_version_and_exit (banner, nil, 'D.E. Knuth (MP changes by W. Bzyl)');
+
+ end else if argument_is ('change') then begin
+ change_name := extend_filename (optarg, 'ch');
+
+ end else if argument_is ('style') then begin
+ if (n_style_name = max_style_name) then begin
+ fatal_error ('Too many style files specified.');
+ usage ('mft');
+ end;
+ style_name[n_style_name] := extend_filename (optarg, 'mft');
+ n_style_name := n_style_name + 1;
+
+ end; {Else it was a flag; |getopt| has already done the assignment.}
+ until getopt_return_val = -1;
+
+ {Now |optind| is the index of first non-option on the command line.
+ We must have exactly one remaining argument.}
+ if (optind + 1 <> argc) then begin
+ write_ln (stderr, 'mft: Need exactly one file argument.');
+ usage ('mft');
+ end;
+
+ suffix := find_suffix (cmdline (optind));
+ if suffix and (strcmp (suffix, 'mp') = 0) then begin
+ metapost := true;
+ tex_name := basename_change_suffix (cmdline (optind), '.mp', '.tex');
+ end else begin
+ tex_name := basename_change_suffix (cmdline (optind), '.mf', '.tex');
+ end;
+
+ if (n_style_name = 0) then begin
+ if metapost then
+ style_name[0] := 'mplain.mft'
+ else
+ style_name[0] := 'plain.mft';
+ n_style_name := 1;
+ end;
+end;
+
+@ Here are the options we allow. The first is one of the standard GNU options.
+@.-help@>
+
+@<Define the option...@> =
+current_option := 0;
+long_options[current_option].name := 'help';
+long_options[current_option].has_arg := 0;
+long_options[current_option].flag := 0;
+long_options[current_option].val := 0;
+incr (current_option);
+
+@ Another of the standard options.
+@.-version@>
+
+@<Define the option...@> =
+long_options[current_option].name := 'version';
+long_options[current_option].has_arg := 0;
+long_options[current_option].flag := 0;
+long_options[current_option].val := 0;
+incr (current_option);
+
+@ Here is the option to set a change file.
+@.-change@>
+
+@<Define the option...@> =
+long_options[current_option].name := 'change';
+long_options[current_option].has_arg := 1;
+long_options[current_option].flag := 0;
+long_options[current_option].val := 0;
+incr (current_option);
+
+@ Here is the option to set the style file.
+@.-style@>
+
+@<Define the option...@> =
+long_options[current_option].name := 'style';
+long_options[current_option].has_arg := 1;
+long_options[current_option].flag := 0;
+long_options[current_option].val := 0;
+incr (current_option);
+
+@ The option to set a \MP\ file processing.
+
+@<Define the option...@> =
+long_options[current_option].name := 'metapost';
+long_options[current_option].has_arg := 0;
+long_options[current_option].flag := address_of (metapost);
+long_options[current_option].val := 1;
+incr (current_option);
+
+@ |metapost| defaults to false
+
+@<Initialize the option...@> =
+metapost:=false;
+
+@ An element with all zeros always ends the list of options.
+
+@<Define the option...@> =
+long_options[current_option].name := 0;
+long_options[current_option].has_arg := 0;
+long_options[current_option].flag := 0;
+long_options[current_option].val := 0;
+@z
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 14:00:54 +0000