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-rw-r--r--Build/source/texk/web2c/ptexdir/ptex-base.ch101
1 files changed, 47 insertions, 54 deletions
diff --git a/Build/source/texk/web2c/ptexdir/ptex-base.ch b/Build/source/texk/web2c/ptexdir/ptex-base.ch
index 85aa811c5de..7fe65d7d6df 100644
--- a/Build/source/texk/web2c/ptexdir/ptex-base.ch
+++ b/Build/source/texk/web2c/ptexdir/ptex-base.ch
@@ -44,6 +44,7 @@
% (08/17/2009) ST pTeX p3.1.11
% (05/23/2010) AK Bug fix by Hironori Kitagawa.
% (31/12/2010) AK Bug fix and accent Kanji by Hironori Kitagawa.
+% (19/01/2011) PB Let \lastkern etc act through disp node.
%
@x [1.2] l.200 - pTeX:
@d banner==TeX_banner
@@ -337,10 +338,10 @@ if last<>first then for k:=first to last-1 do print(buffer[k]);
@d box_node_size=8 {number of words to allocate for a box node}
@#
@d box_dir(#) == subtype(#) {direction mode of a box}
-@d dir_default == qi(0) {direction of the box, default Left to Right}
-@d dir_dtou == qi(1) {direction of the box, Bottom to Top}
-@d dir_tate == qi(3) {direction of the box, Top to Bottom}
-@d dir_yoko == qi(4) {direction of the box, equal default}
+@d dir_default = 0 {direction of the box, default Left to Right}
+@d dir_dtou = 1 {direction of the box, Bottom to Top}
+@d dir_tate = 3 {direction of the box, Top to Bottom}
+@d dir_yoko = 4 {direction of the box, equal default}
@d any_dir == dir_yoko,dir_tate,dir_dtou
@#
@d width_offset=1 {position of |width| field in a box node}
@@ -958,7 +959,7 @@ kern_node,disp_node,math_node,penalty_node:
@y
@<Types...@>=
@!list_state_record=record@!mode_field:-mmode..mmode;@+
- @!dir_field,@!adj_dir_field: -dir_dtou..dir_dtou;
+ @!dir_field,@!adj_dir_field: -dir_yoko..dir_yoko;
@!pdisp_field: scaled;
@!head_field,@!tail_field,@!pnode_field,@!last_jchr_field: pointer;
@z
@@ -1965,6 +1966,32 @@ else
end;
@z
+@x [26.424] l.8690 - pTeX: Fetch an item ...: disp_node
+ case cur_chr of
+ int_val: if type(tail)=penalty_node then cur_val:=penalty(tail);
+ dimen_val: if type(tail)=kern_node then cur_val:=width(tail);
+ glue_val: if type(tail)=glue_node then
+ begin cur_val:=glue_ptr(tail);
+ if subtype(tail)=mu_glue then cur_val_level:=mu_val;
+ end;
+@y
+ begin if (type(tail)=disp_node)and not is_char_node(prev_node) then q:=prev_node
+ else q:=tail;
+ case cur_chr of
+ int_val: if type(q)=penalty_node then cur_val:=penalty(q);
+ dimen_val: if type(q)=kern_node then cur_val:=width(q);
+ glue_val: if type(q)=glue_node then
+ begin cur_val:=glue_ptr(q);
+ if subtype(q)=mu_glue then cur_val_level:=mu_val;
+ end;
+@z
+@x [26.424] l.8690 - pTeX: Fetch an item ...: disp_node
+ end {there are no other cases}
+@y
+ end; {there are no other cases}
+ end
+@z
+
@x [26.435] l.8940 - pTeX: scan_char_num
procedure scan_char_num;
begin scan_int;
@@ -4520,29 +4547,8 @@ q:pointer;
@z
@x [47.1076] l.21553 - pTeX: box_dir adjust
-begin if cur_box<>null then
begin shift_amount(cur_box):=box_context;
- if abs(mode)=vmode then
- begin append_to_vlist(cur_box);
- if adjust_tail<>null then
- begin if adjust_head<>adjust_tail then
- begin link(tail):=link(adjust_head); tail:=adjust_tail;
- end;
- adjust_tail:=null;
- end;
- if mode>0 then build_page;
- end
- else begin if abs(mode)=hmode then space_factor:=1000
- else begin p:=new_noad;
- math_type(nucleus(p)):=sub_box;
- info(nucleus(p)):=cur_box; cur_box:=p;
- end;
- link(tail):=cur_box; tail:=cur_box;
- end;
- end;
-end
@y
-begin if cur_box<>null then
begin p:=link(cur_box); link(cur_box):=null;
while p<>null do begin
q:=p; p:=link(p);
@@ -4558,27 +4564,6 @@ begin if cur_box<>null then
if box_dir(cur_box)<>abs(direction) then
cur_box:=new_dir_node(cur_box,abs(direction));
shift_amount(cur_box):=box_context;
- if abs(mode)=vmode then
- begin append_to_vlist(cur_box);
- if adjust_tail<>null then
- begin if adjust_head<>adjust_tail then
- begin link(tail):=link(adjust_head); tail:=adjust_tail;
- end;
- adjust_tail:=null;
- end;
- if mode>0 then build_page;
- end
- else begin
- if abs(mode)=hmode then
- space_factor:=1000
- else begin p:=new_noad;
- math_type(nucleus(p)):=sub_box;
- info(nucleus(p)):=cur_box; cur_box:=p;
- end;
- link(tail):=cur_box; tail:=cur_box;
- end;
-end;
-end
@z
@x [47.1078] l.21585 - pTeX: box_dir adjust
@@ -4622,6 +4607,14 @@ var @!p,@!q:pointer; {run through the current list}
@!f:boolean; {will |d| free?}
@z
+@x [47.1080] l.21625 - pTeX: disp_node, check head=tail
+@ Note that the condition |not is_char_node(tail)| implies that |head<>tail|,
+since |head| is a one-word node.
+@y
+@ Note that in \TeX\ the condition |not is_char_node(tail)| implies that
+|head<>tail|, since |head| is a one-word node; this is not so for p\TeX.
+@z
+
@x [47.1080] l.21636 - pTeX: disp_node, check head=tail
else begin if not is_char_node(tail) then
if (type(tail)=hlist_node)or(type(tail)=vlist_node) then
@@ -4936,7 +4929,7 @@ else begin
begin if prev_disp=disp_dimen(d) then
{|free_node(tail,small_node_size)|}
else disp_dimen(tail):=disp_dimen(d);
- if f then free_node(d,small_node_size)
+ if f then free_node(d,small_node_size)
else begin prev_node:=tail; prev_disp:=disp; tail_append(d) end
end
else
@@ -5192,7 +5185,7 @@ tail:=new_kern(-a-delta); subtype(tail):=acc_kern; link(p):=tail; p:=q;
@y
tail:=new_kern(-a-delta); subtype(tail):=acc_kern;
if h=x then begin
- if font_dir[font(p)]<>dir_default then link(link(p)):=tail
+ if font_dir[font(p)]<>dir_default then link(link(p)):=tail
else link(p):=tail; end
else link(p):=tail;
{ bugfix: if |p| is KANJI char, |link(p)|:=|tail| collapses |p| and kern after accent. }
@@ -6327,21 +6320,21 @@ while p<>null do
ligature_node: @<Insert ligature surround spacing@>;
penalty_node,disp_node: @<Insert penalty or displace surround spacing@>;
kern_node: if (subtype(p)=explicit) then insert_skip:=no_skip
- else if (subtype(p)=acc_kern) then begin
+ else if (subtype(p)=acc_kern) then begin
{ When we insert \.{\\xkanjiskip}, we first ignore accent (and kerns) and
insert \.{\\xkanjiskip}, then we recover the accent. }
if q=p then begin t:=link(p);
{ if p is beginning on the list, we have only to ignore nodes. }
- if is_char_node(t) then
+ if is_char_node(t) then
if font_dir[font(t)]<>dir_default then t:=link(t);
- p:=link(link(t));
- if font_dir[font(p)]<>dir_default then
+ p:=link(link(t));
+ if font_dir[font(p)]<>dir_default then
begin p:=link(p); insert_skip:=after_wchar; end
else insert_skip:=after_schar;
end
else begin
a:=p; t:=link(p);
- if is_char_node(t) then
+ if is_char_node(t) then
if font_dir[font(t)]<>dir_default then t:=link(t);
t:=link(link(t)); link(q):=t; p:=t;
@<Insert a space around the character |p|@>; incr(i);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 04:37:58 +0000