% ompar.ch: Local paragraph information % % This file is part of the Omega project, which % is based on the web2c distribution of TeX. % % Copyright (c) 1994--2000 John Plaice and Yannis Haralambous % % This library is free software; you can redistribute it and/or % modify it under the terms of the GNU Library General Public % License as published by the Free Software Foundation; either % version 2 of the License, or (at your option) any later version. % % This library is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU % Library General Public License for more details. % % You should have received a copy of the GNU Library General Public % License along with this library; if not, write to the Free Software % Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. % %------------------------- @x @p function copy_node_list(@!p:pointer):pointer; {makes a duplicate of the node list that starts at |p| and returns a pointer to the new list} var h:pointer; {temporary head of copied list} @!q:pointer; {previous position in new list} @!r:pointer; {current node being fabricated for new list} @!words:0..5; {number of words remaining to be copied} @y @p function copy_node_list(@!p:pointer):pointer; {makes a duplicate of the node list that starts at |p| and returns a pointer to the new list} var h:pointer; {temporary head of copied list} @!q:pointer; {previous position in new list} @!r:pointer; {current node being fabricated for new list} @!words:0..8; {number of words remaining to be copied} @z @x [15] m.208 l.4170 @d min_internal=char_ghost+1 {the smallest code that can follow \.{\\the}} @y @d assign_local_box=char_ghost+1 {box for guillemets \.{\\localleftbox} or \.{\\localrightbox}} @d min_internal=assign_local_box+1 {the smallest code that can follow \.{\\the}} @z %------------------------- @x [16] m.212 l.4306 @!aux_field: memory_word; @y @!aux_field: memory_word; @!local_par_field: pointer; @!local_par_bool_field: boolean; @z %------------------------- @x [16] m.213 l.4318 @d mode_line==cur_list.ml_field {source file line number at beginning of list} @y @d mode_line==cur_list.ml_field {source file line number at beginning of list} @d local_par==cur_list.local_par_field {pointer to whatsit for local stuff} @d local_par_bool==cur_list.local_par_bool_field {has local stuff been changed in this group?} @z %------------------------- @x [16] m.215 l.4344 prev_graf:=0; shown_mode:=0; @y prev_graf:=0; shown_mode:=0; local_par:=null; local_par_bool:=false; @z %------------------------- @x [16] m.216 l.4351 @ When \TeX's work on one level is interrupted, the state is saved by calling |push_nest|. This routine changes |head| and |tail| so that a new (empty) list is begun; it does not change |mode| or |aux|. @p procedure push_nest; {enter a new semantic level, save the old} begin if nest_ptr>max_nest_stack then begin max_nest_stack:=nest_ptr; if nest_ptr=nest_size then overflow("semantic nest size",nest_size); @:TeX capacity exceeded semantic nest size}{\quad semantic nest size@> end; nest[nest_ptr]:=cur_list; {stack the record} incr(nest_ptr); head:=get_avail; tail:=head; prev_graf:=0; mode_line:=line; @y @ @p @; @ When \TeX's work on one level is interrupted, the state is saved by calling |push_nest|. This routine changes |head| and |tail| so that a new (empty) list is begun; it does not change |mode| or |aux|. @p procedure push_nest; {enter a new semantic level, save the old} begin if nest_ptr>max_nest_stack then begin max_nest_stack:=nest_ptr; if nest_ptr=nest_size then overflow("semantic nest size",nest_size); @:TeX capacity exceeded semantic nest size}{\quad semantic nest size@> end; nest[nest_ptr]:=cur_list; {stack the record} incr(nest_ptr); head:=get_avail; tail:=head; prev_graf:=0; mode_line:=line; local_par:=make_local_par_node; local_par_bool:=false; @z %------------------------- @x [16] m.217 l.4366 begin free_avail(head); decr(nest_ptr); cur_list:=nest[nest_ptr]; @y begin if local_par<>null then begin if local_par_bool then begin end {|tail_append(local_par)|} else free_node(local_par,local_par_size); end; free_avail(head); decr(nest_ptr); cur_list:=nest[nest_ptr]; @z %------------------------- @x [17] m.230 l.4860 @d box_base=toks_base+number_regs {table of |number_regs| box registers} @y @d local_left_box_base=toks_base+number_regs @d local_right_box_base=local_left_box_base+1 @d box_base=local_right_box_base+1 {table of |number_regs| box registers} @z %------------------------- @x [17] m.230 l.4888 @d box(#)==equiv(box_base+#) @y @d local_left_box==equiv(local_left_box_base) @d local_right_box==equiv(local_right_box_base) @d box(#)==equiv(box_base+#) @z %------------------------- @x [17] m.236 l.4954 @d int_pars=55 {total number of integer parameters} @y @d local_inter_line_penalty_code=55 {local \.{\\interlinepenalty}} @d local_broken_penalty_code=56 {local \.{\\brokenpenalty}} @d no_local_whatsits_code=57 {counts local whatsits} @d int_pars=58 {total number of integer parameters} @z %------------------------- @x [17] m.236 l.5011 @d new_line_char==int_par(new_line_char_code) @y @d new_line_char==int_par(new_line_char_code) @d local_inter_line_penalty==int_par(local_inter_line_penalty_code) @d local_broken_penalty==int_par(local_broken_penalty_code) @d no_local_whatsits==int_par(no_local_whatsits_code) @z %------------------------- @x [19] m.269 l.5860 @d max_group_code=16 @y @d local_box_group=17 {code for `\.{\\localleftbox...\\localrightbox}'} @d max_group_code=17 @z %------------------------- @x [38] m.814 l.15994 @!just_box:pointer; {the |hlist_node| for the last line of the new paragraph} @y @!just_box:pointer; {the |hlist_node| for the last line of the new paragraph} @!internal_pen_inter:integer; {running \.{\\localinterlinepenalty}} @!internal_pen_broken:integer; {running \.{\\localbrokenpenalty}} @!internal_left_box:pointer; {running \.{\\localleftbox}} @!internal_left_box_width:integer; {running \.{\\localleftbox} width} @!init_internal_left_box:pointer; {running \.{\\localleftbox}} @!init_internal_left_box_width:integer; {running \.{\\localleftbox} width} @!internal_right_box:pointer; {running \.{\\localrightbox}} @!internal_right_box_width:integer; {running \.{\\localrightbox} width} @!temp_no_whatsits:integer; {used when closing group} @ @= temp_no_whatsits:=0; @z %------------------------- @x [38] m.821 l.16110 @ The passive node for a given breakpoint contains only four fields: \yskip\hang|link| points to the passive node created just before this one, if any, otherwise it is |null|. \yskip\hang|cur_break| points to the position of this breakpoint in the horizontal list for the paragraph being broken. \yskip\hang|prev_break| points to the passive node that should precede this one in an optimal path to this breakpoint. \yskip\hang|serial| is equal to |n| if this passive node is the |n|th one created during the current pass. (This field is used only when printing out detailed statistics about the line-breaking calculations.) \yskip\noindent There is a global variable called |passive| that points to the most recently created passive node. Another global variable, |printed_node|, is used to help print out the paragraph when detailed information about the line-breaking computation is being displayed. @d passive_node_size=2 {number of words in passive nodes} @d cur_break==rlink {in passive node, points to position of this breakpoint} @d prev_break==llink {points to passive node that should precede this one} @d serial==info {serial number for symbolic identification} @y @ The passive node for a given breakpoint contains EIGHT fields: \yskip\hang|link| points to the passive node created just before this one, if any, otherwise it is |null|. \yskip\hang|cur_break| points to the position of this breakpoint in the horizontal list for the paragraph being broken. \yskip\hang|prev_break| points to the passive node that should precede this one in an optimal path to this breakpoint. \yskip\hang|serial| is equal to |n| if this passive node is the |n|th one created during the current pass. (This field is used only when printing out detailed statistics about the line-breaking calculations.) \yskip\hang|passive_pen_inter| holds the current \.{\\localinterlinepenalty} \yskip\hang|passive_pen_broken| holds the current \.{\\localbrokenpenalty} \yskip\noindent There is a global variable called |passive| that points to the most recently created passive node. Another global variable, |printed_node|, is used to help print out the paragraph when detailed information about the line-breaking computation is being displayed. @d passive_node_size=10 {number of words in passive nodes} @d cur_break==rlink {in passive node, points to position of this breakpoint} @d prev_break==llink {points to passive node that should precede this one} @d serial==info {serial number for symbolic identification} @d passive_pen_inter(#)==mem[#+2].int @d passive_pen_broken(#)==mem[#+3].int @d passive_left_box(#)==mem[#+4].int @d passive_left_box_width(#)==mem[#+5].int @d passive_last_left_box(#)==mem[#+6].int @d passive_last_left_box_width(#)==mem[#+7].int @d passive_right_box(#)==mem[#+8].int @d passive_right_box_width(#)==mem[#+9].int @z %------------------------- @x [38] m.835 l.16407 @= begin l:=line_number(r); if l>old_l then begin {now we are no longer in the inner loop} @y @= begin l:=line_number(r); if l>old_l then begin {now we are no longer in the inner loop} @z %------------------------- @x [38] m.844 l.16595 @= begin q:=get_node(passive_node_size); link(q):=passive; passive:=q; cur_break(q):=cur_p; @!stat incr(pass_number); serial(q):=pass_number;@+tats@;@/ prev_break(q):=best_place[fit_class];@/ @y @= begin q:=get_node(passive_node_size); link(q):=passive; passive:=q; cur_break(q):=cur_p; @!stat incr(pass_number); serial(q):=pass_number;@+tats@;@/ prev_break(q):=best_place[fit_class];@/ {Here we keep track of the subparagraph penalties in the break nodes} passive_pen_inter(q):=internal_pen_inter; passive_pen_broken(q):=internal_pen_broken; passive_last_left_box(q):=internal_left_box; passive_last_left_box_width(q):=internal_left_box_width; if prev_break(q)<>null then begin passive_left_box(q):=passive_last_left_box(prev_break(q)); passive_left_box_width(q):=passive_last_left_box_width(prev_break(q)); end else begin passive_left_box(q):=init_internal_left_box; passive_left_box_width(q):=init_internal_left_box_width; end; passive_right_box(q):=internal_right_box; passive_right_box_width(q):=internal_right_box_width; @z %------------------------- @x [38] m.851 l.16706 @= begin artificial_demerits:=false;@/ @^inner loop@> shortfall:=line_width-cur_active_width[1]; {we're this much too short} @y @= begin artificial_demerits:=false;@/ @^inner loop@> shortfall:=line_width-cur_active_width[1]; {we're this much too short} if break_node(r)=null then shortfall:=shortfall-init_internal_left_box_width else shortfall:=shortfall-passive_last_left_box_width(break_node(r)); shortfall:=shortfall-internal_right_box_width; @z %------------------------- @x [39] m.863 l.16932 loop@+ begin if threshold>inf_bad then threshold:=inf_bad; if second_pass then @; @; cur_p:=link(temp_head); auto_breaking:=true;@/ prev_p:=cur_p; {glue at beginning is not a legal breakpoint} @y loop@+ begin if threshold>inf_bad then threshold:=inf_bad; if second_pass then @; @; cur_p:=link(temp_head); auto_breaking:=true;@/ prev_p:=cur_p; {glue at beginning is not a legal breakpoint} @; @z %------------------------- @x [39] m.877 l.17206 procedure post_line_break(@!final_widow_penalty:integer); label done,done1; @y procedure post_line_break(@!final_widow_penalty:integer); label done,done1; @z %------------------------- @x [39] m.879 l.17257 if non_discardable(q) then goto done1; if type(q)=kern_node then if subtype(q)<>explicit then goto done1; @y if @ then begin end else begin if non_discardable(q) then goto done1; if type(q)=kern_node then if subtype(q)<>explicit then goto done1; end; @z %------------------------- @x [39] m.881 l.17289 q:=cur_break(cur_p); disc_break:=false; post_disc_break:=false; if q<>null then {|q| cannot be a |char_node|} if type(q)=glue_node then begin delete_glue_ref(glue_ptr(q)); glue_ptr(q):=right_skip; subtype(q):=right_skip_code+1; add_glue_ref(right_skip); goto done; end else begin if type(q)=disc_node then @ else if (type(q)=math_node)or(type(q)=kern_node) then width(q):=0; end else begin q:=temp_head; while link(q)<>null do q:=link(q); end; @; @y q:=cur_break(cur_p); disc_break:=false; post_disc_break:=false; if q<>null then {|q| cannot be a |char_node|} if type(q)=glue_node then begin if passive_right_box(cur_p)<>null then begin r:=temp_head; while link(r)<>q do r:=link(r); s:=copy_node_list(passive_right_box(cur_p)); link(r):=s; link(s):=q; end; delete_glue_ref(glue_ptr(q)); glue_ptr(q):=right_skip; subtype(q):=right_skip_code+1; add_glue_ref(right_skip); goto done; end else begin if type(q)=disc_node then @ else if (type(q)=math_node)or(type(q)=kern_node) then width(q):=0; end else begin q:=temp_head; while link(q)<>null do q:=link(q); end; if passive_right_box(cur_p)<>null then begin r:=copy_node_list(passive_right_box(cur_p)); link(r):=link(q); link(q):=r; q:=r; end; @; @z %------------------------- @x [39] m.887 l.17352 @= r:=link(q); link(q):=null; q:=link(temp_head); link(temp_head):=r; if left_skip<>zero_glue then begin r:=new_param_glue(left_skip_code); link(r):=q; q:=r; end @y @= r:=link(q); link(q):=null; q:=link(temp_head); link(temp_head):=r; if passive_left_box(cur_p)<>null then begin r:=copy_node_list(passive_left_box(cur_p)); s:=link(q); link(r):=q; q:=r; if (cur_line=prev_graf+1) and (s<>null) then if type(s)=hlist_node then if list_ptr(s)=null then begin q:=link(q); link(r):=link(s); link(s):=r; end; end; if left_skip<>zero_glue then begin r:=new_param_glue(left_skip_code); link(r):=q; q:=r; end @z %------------------------- @x [39] m.890 l.17391 @= if cur_line+1<>best_line then begin pen:=inter_line_penalty; if cur_line=prev_graf+1 then pen:=pen+club_penalty; if cur_line+2=best_line then pen:=pen+final_widow_penalty; if disc_break then pen:=pen+broken_penalty; @y @= if cur_line+1<>best_line then begin if passive_pen_inter(cur_p)<>0 then pen:=passive_pen_inter(cur_p) else pen:=inter_line_penalty; if cur_line=prev_graf+1 then pen:=pen+club_penalty; if cur_line+2=best_line then pen:=pen+final_widow_penalty; if disc_break then if passive_pen_broken(cur_p)<>0 then pen:=pen+passive_pen_broken(cur_p) else pen:=pen+broken_penalty; @z %------------------------- @x [47] m.1063 l.20580 non_math(left_brace): new_save_level(simple_group); any_mode(begin_group): new_save_level(semi_simple_group); any_mode(end_group): if cur_group=semi_simple_group then unsave else off_save; @y non_math(left_brace): begin new_save_level(simple_group); eq_word_define(int_base+no_local_whatsits_code,0); end; any_mode(begin_group): begin new_save_level(semi_simple_group); eq_word_define(int_base+no_local_whatsits_code,0); end; any_mode(end_group): if cur_group=semi_simple_group then begin temp_no_whatsits:=no_local_whatsits; unsave; if temp_no_whatsits<>0 then if abs(mode)=hmode then @; end else off_save; @z %------------------------- @x [47] m.1068 l.20653 procedure handle_right_brace; var p,@!q:pointer; {for short-term use} @!d:scaled; {holds |split_max_depth| in |insert_group|} @!f:integer; {holds |floating_penalty| in |insert_group|} begin case cur_group of simple_group: unsave; @y procedure handle_right_brace; var p,@!q:pointer; {for short-term use} @!d:scaled; {holds |split_max_depth| in |insert_group|} @!f:integer; {holds |floating_penalty| in |insert_group|} begin case cur_group of simple_group: begin temp_no_whatsits:=no_local_whatsits; unsave; if temp_no_whatsits<>0 then if abs(mode)=hmode then @; end; @z %------------------------- @x [47] m.1091 l.21055 push_nest; mode:=hmode; space_factor:=1000; set_cur_lang; clang:=cur_lang; prev_graf:=(norm_min(left_hyphen_min)*@'100+norm_min(right_hyphen_min)) *@'200000+cur_lang; if indented then begin tail:=new_null_box; link(head):=tail; width(tail):=par_indent;@+ end; @y push_nest; mode:=hmode; space_factor:=1000; set_cur_lang; clang:=cur_lang; prev_graf:=(norm_min(left_hyphen_min)*@'100+norm_min(right_hyphen_min)) *@'200000+cur_lang; @; if indented then begin tail:=new_null_box; link(link(head)):=tail; width(tail):=par_indent;@+ end; @z %------------------------- @x [47] m.1096 l.21116 procedure end_graf; begin if mode=hmode then begin if head=tail then pop_nest {null paragraphs are ignored} @y procedure end_graf; begin if mode=hmode then begin if (head=tail) or (link(head)=tail) then pop_nest {null paragraphs are ignored, all contain a |local_paragraph| node} @z %------------------------- @x [47] m.1114 l.21322 primitive("-",discretionary,1); @!@:Single-character primitives -}{\quad\.{\\-}@> primitive("discretionary",discretionary,0); @!@:discretionary_}{\.{\\discretionary} primitive@> @ @= discretionary: if chr_code=1 then print_esc("-")@+else print_esc("discretionary"); @ @= hmode+discretionary,mmode+discretionary: append_discretionary; @y primitive("-",discretionary,1); @!@:Single-character primitives -}{\quad\.{\\-}@> primitive("discretionary",discretionary,0); @!@:discretionary_}{\.{\\discretionary} primitive@> primitive("localleftbox",assign_local_box,0); @!@:assign_local_box}{\.{\\localleftbox} primitive@> primitive("localrightbox",assign_local_box,1); @!@:assign_local_box}{\.{\\localrightbox} primitive@> @ @= discretionary: if chr_code=1 then print_esc("-")@+else print_esc("discretionary"); assign_local_box: if chr_code=0 then print_esc("localleftbox") else print_esc("localrightbox"); @ @= hmode+discretionary,mmode+discretionary: append_discretionary; any_mode(assign_local_box): append_local_box(cur_chr); @z %------------------------- @x [47] m.1117 l.21338 procedure append_discretionary; @y procedure append_local_box(kind:integer); begin incr(save_ptr); saved(-1):=kind; new_save_level(local_box_group); scan_left_brace; push_nest; mode:=-hmode; space_factor:=1000; end; procedure append_discretionary; @z %------------------------- @x [47] m.1118 l.21355 disc_group: build_discretionary; @y disc_group: build_discretionary; local_box_group: build_local_box; @z %------------------------- @x [47] m.1119 l.21358 procedure build_discretionary; @y procedure build_local_box; var p:pointer; kind:integer; begin unsave; kind:=saved(-1); decr(save_ptr); p:=link(head); pop_nest; p:=hpack(p,natural); if kind=0 then eq_define(local_left_box_base,box_ref,p) else eq_define(local_right_box_base,box_ref,p); if abs(mode)=hmode then @; eq_word_define(int_base+no_local_whatsits_code,no_local_whatsits+1); end; procedure build_discretionary; @z %------------------------- @x [47] m.1200 l.22453 procedure resume_after_display; begin if cur_group<>math_shift_group then confusion("display"); @:this can't happen display}{\quad display@> unsave; prev_graf:=prev_graf+3; push_nest; mode:=hmode; space_factor:=1000; set_cur_lang; clang:=cur_lang; prev_graf:=(norm_min(left_hyphen_min)*@'100+norm_min(right_hyphen_min)) *@'200000+cur_lang; @y procedure resume_after_display; begin if cur_group<>math_shift_group then confusion("display"); @:this can't happen display}{\quad display@> unsave; prev_graf:=prev_graf+3; push_nest; mode:=hmode; space_factor:=1000; set_cur_lang; clang:=cur_lang; prev_graf:=(norm_min(left_hyphen_min)*@'100+norm_min(right_hyphen_min)) *@'200000+cur_lang; @; @z %------------------------- @x [49] m.1228 l.22908 assign_int: begin p:=cur_chr; scan_optional_equals; scan_int; word_define(p,cur_val); @y assign_int: begin p:=cur_chr; scan_optional_equals; scan_int; word_define(p,cur_val); {If we are defining subparagraph penalty levels while we are in hmode, then we put out a whatsit immediately, otherwise we leave it alone. This mechanism might not be sufficiently powerful, and some other algorithm, searching down the stack, might be necessary. Good first step.} if (abs(mode)=hmode) and ((p=(int_base+local_inter_line_penalty_code)) or (p=(int_base+local_broken_penalty_code))) then begin @; eq_word_define(int_base+no_local_whatsits_code,no_local_whatsits+1); local_par_bool:=true; end; @z %------------------------- @x [53] m.1344 l.24533 @d set_language_code=5 {command modifier for \.{\\setlanguage}} @y @d set_language_code=5 {command modifier for \.{\\setlanguage}} @d local_par_node=6 {|subtype| in whatsits for local paragraph node} @z %------------------------- @x [53] m.1344 l.24546 primitive("setlanguage",extension,set_language_code);@/ @!@:set_language_}{\.{\\setlanguage} primitive@> @y primitive("setlanguage",extension,set_language_code);@/ @!@:set_language_}{\.{\\setlanguage} primitive@> primitive("localinterlinepenalty",assign_int,local_inter_line_penalty_code);@/ primitive("localbrokenpenalty",assign_int,local_broken_penalty_code);@/ @z %------------------------- @x [53] m.1356 l.24660 language_node:begin print_esc("setlanguage"); print_int(what_lang(p)); print(" (hyphenmin "); print_int(what_lhm(p)); print_char(","); print_int(what_rhm(p)); print_char(")"); end; @y4 language_node:begin print_esc("setlanguage"); print_int(what_lang(p)); print(" (hyphenmin "); print_int(what_lhm(p)); print_char(","); print_int(what_rhm(p)); print_char(")"); end; @; @z %------------------------- @x [53] m.1357 l.24685 othercases confusion("ext2") @y local_par_node: begin r:=get_node(local_par_size); words:=local_par_size; end; othercases confusion("ext2") @z %------------------------- @x [53] m.1358 l.24696 othercases confusion("ext3") @y local_par_node: free_node(p,local_par_size); othercases confusion("ext3") @z %------------------------- @x [53] m.1362 l.24711 @=@+ adv_past(cur_p) @y @=@+ adv_past(cur_p) else @ @z %------------------------- @x [53] m.1373 l.24820 procedure out_what(@!p:pointer); var j:small_number; {write stream number} begin case subtype(p) of open_node,write_node,close_node:@; special_node:special_out(p); language_node:do_nothing; othercases confusion("ext4") @y procedure out_what(@!p:pointer); var j:small_number; {write stream number} begin case subtype(p) of open_node,write_node,close_node:@; special_node:special_out(p); language_node:do_nothing; local_par_node:do_nothing; othercases confusion("ext4") @z %------------------------- @x [53] m.1378 l.24900 @ @= for k:=0 to 15 do if write_open[k] then a_close(write_file[k]) @y @ @= for k:=0 to 15 do if write_open[k] then a_close(write_file[k]) @ @d local_pen_inter(#)==mem[#+1].int {\.{\\localinterlinepenalty}} @d local_pen_broken(#)==mem[#+2].int {\.{\\localbrokenpenalty}} @d local_box_left(#)==mem[#+3].int {\.{\\localleftbox}} @d local_box_left_width(#)==mem[#+4].int @d local_box_right(#)==mem[#+5].int {\.{\\localleftbox}} @d local_box_right_width(#)==mem[#+6].int @d local_par_size==7 @= function make_local_par_node:pointer; {This function creates a |local_paragraph| node} var p:pointer; begin p:=get_node(local_par_size); type(p):=whatsit_node; subtype(p):=local_par_node; link(p):=null; local_pen_inter(p):=local_inter_line_penalty; local_pen_broken(p):=local_broken_penalty; if local_left_box=null then begin local_box_left(p):=null; local_box_left_width(p):=0; end else begin local_box_left(p):=copy_node_list(local_left_box); local_box_left_width(p):=width(local_left_box); end; if local_right_box=null then begin local_box_right(p):=null; local_box_right_width(p):=0; end else begin local_box_right(p):=copy_node_list(local_right_box); local_box_right_width(p):=width(local_right_box); end; make_local_par_node:=p; end @ @= if subtype(cur_p)=local_par_node then begin internal_pen_inter:=local_pen_inter(cur_p); internal_pen_broken:=local_pen_broken(cur_p); init_internal_left_box:=local_box_left(cur_p); init_internal_left_box_width:=local_box_left_width(cur_p); internal_left_box:=init_internal_left_box; internal_left_box_width:=init_internal_left_box_width; internal_right_box:=local_box_right(cur_p); internal_right_box_width:=local_box_right_width(cur_p); end @ @= if subtype(cur_p)=local_par_node then begin internal_pen_inter:=local_pen_inter(cur_p); internal_pen_broken:=local_pen_broken(cur_p); internal_left_box:=local_box_left(cur_p); internal_left_box_width:=local_box_left_width(cur_p); internal_right_box:=local_box_right(cur_p); internal_right_box_width:=local_box_right_width(cur_p); end @ @= local_par_node: begin print_esc("whatsit"); append_char("."); print_ln; print_current_string; print_esc("localinterlinepenalty"); print("="); print_int(local_pen_inter(p)); print_ln; print_current_string; print_esc("localbrokenpenalty"); print("="); print_int(local_pen_broken(p)); print_ln; print_current_string; print_esc("localleftbox"); if local_box_left(p)=null then print("=null") else begin append_char("."); show_node_list(local_box_left(p)); decr(pool_ptr); end; print_ln; print_current_string; print_esc("localrightbox"); if local_box_right(p)=null then print("=null") else begin append_char("."); show_node_list(local_box_right(p)); decr(pool_ptr); end; decr(pool_ptr); end @ @= begin tail_append(make_local_par_node) end @ @= ((type(q)=whatsit_node) and (subtype(q)=local_par_node)) @z %-------------------------