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authorKarl Berry <karl@freefriends.org>2023-02-13 16:43:55 +0000
committerKarl Berry <karl@freefriends.org>2023-02-13 16:43:55 +0000
commit9126877409972187cc26dec15b2a9642ec4834dd (patch)
tree0712c97d88dd3a8ce787b4b2db65541dc50e0aab /Build/source/texk/web2c/xetexdir
parentf76d5cbdd3fdc27b30b766d71320ee55de5ec6ce (diff)
shipout keyword for \special and \pdfliteral, a la pdftex
git-svn-id: svn://tug.org/texlive/trunk@65814 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/web2c/xetexdir')
-rw-r--r--Build/source/texk/web2c/xetexdir/ChangeLog10
-rw-r--r--Build/source/texk/web2c/xetexdir/NEWS5
-rw-r--r--Build/source/texk/web2c/xetexdir/xetex.web42
3 files changed, 44 insertions, 13 deletions
diff --git a/Build/source/texk/web2c/xetexdir/ChangeLog b/Build/source/texk/web2c/xetexdir/ChangeLog
index ad75eb86e25..5a2fcb3c105 100644
--- a/Build/source/texk/web2c/xetexdir/ChangeLog
+++ b/Build/source/texk/web2c/xetexdir/ChangeLog
@@ -1,3 +1,13 @@
+2023-01-20 Phelype Oleinik <phelype.oleinik@latex-project.org>
+
+ * xetex.web: implement shipout keyword for delayed expansion
+ with \pdfliteral and \special, like non-\immediate \write.
+ (latespecial_node): new @d (4), and step @d for following parameters.
+ (Implement \.{\\special}): look for `shipout' keyword.
+ (Display the whatsit) <latespecial_node, <pdf_lateliteral_node>:
+ (special_out): check for latespecial_node.
+ new cases.
+
2021-02-17 Karl Berry <karl@tug.org>
* NEWS,
diff --git a/Build/source/texk/web2c/xetexdir/NEWS b/Build/source/texk/web2c/xetexdir/NEWS
index 1fb4a87d727..154e222c316 100644
--- a/Build/source/texk/web2c/xetexdir/NEWS
+++ b/Build/source/texk/web2c/xetexdir/NEWS
@@ -1,5 +1,8 @@
==============================================================
-XeTeX 0.999995
+XeTeX 0.999995 (February 2023)
+
+* new keyword `shipout' for \special and \pdfliteral, delaying
+ expansion until the node is shipped out, like non-\immediate \write.
==============================================================
XeTeX 0.999994 (February 2022)
diff --git a/Build/source/texk/web2c/xetexdir/xetex.web b/Build/source/texk/web2c/xetexdir/xetex.web
index bb107758871..4e2f8965dc8 100644
--- a/Build/source/texk/web2c/xetexdir/xetex.web
+++ b/Build/source/texk/web2c/xetexdir/xetex.web
@@ -29551,7 +29551,8 @@ to hold the string numbers for name, area, and extension.
@d write_node=1 {|subtype| in whatsits that represent things to \.{\\write}}
@d close_node=2 {|subtype| in whatsits that represent streams to \.{\\closeout}}
@d special_node=3 {|subtype| in whatsits that represent \.{\\special} things}
-@d language_node=4 {|subtype| in whatsits that change the current language}
+@d latespecial_node=4 {|subtype| in whatsits that represent \.{\\special} things}
+@d language_node=5 {|subtype| in whatsits that change the current language}
@d what_lang(#)==link(#+1) {language number, in the range |0..255|}
@d what_lhm(#)==type(#+1) {minimum left fragment, in the range |1..63|}
@d what_rhm(#)==subtype(#+1) {minimum right fragment, in the range |1..63|}
@@ -29578,13 +29579,13 @@ for k:=0 to 17 do write_open[k]:=false;
|extension| with a modifier, whenever possible, so that |main_control|
stays the same.
-@d immediate_code=4 {command modifier for \.{\\immediate}}
-@d set_language_code=5 {command modifier for \.{\\setlanguage}}
+@d immediate_code=5 {command modifier for \.{\\immediate}}
+@d set_language_code=6 {command modifier for \.{\\setlanguage}}
-@d pdftex_first_extension_code = 6
-@d pdf_save_pos_node == pdftex_first_extension_code + 15
-@d reset_timer_code == pdftex_first_extension_code + 25
-@d set_random_seed_code == pdftex_first_extension_code + 27
+@d pdftex_first_extension_code = 7
+@d pdf_save_pos_node == pdftex_first_extension_code + 16
+@d reset_timer_code == pdftex_first_extension_code + 26
+@d set_random_seed_code == pdftex_first_extension_code + 28
@d pic_file_code=41 { command modifier for \.{\\XeTeXpicfile}, skipping codes pdfTeX might use }
@d pdf_file_code=42 { command modifier for \.{\\XeTeXpdffile} }
@@ -29732,12 +29733,17 @@ begin new_write_whatsit(write_node_size); write_tokens(tail):=null;
end
@ When `\.{\\special\{...\}}' appears, we expand the macros in the token
-list as in \.{\\xdef} and \.{\\mark}.
+list as in \.{\\xdef} and \.{\\mark}. When marked with \.{shipout}, we keep
+tokens unexpanded for now.
@<Implement \.{\\special}@>=
+begin if scan_keyword("shipout") then
+begin new_whatsit(latespecial_node,write_node_size); write_stream(tail):=null;
+p:=scan_toks(false,false); write_tokens(tail):=def_ref;
+end else
begin new_whatsit(special_node,write_node_size); write_stream(tail):=null;
p:=scan_toks(false,true); write_tokens(tail):=def_ref;
-end
+end; end
@ @d call_func(#) == begin if # <> 0 then do_nothing end
@d flushable(#) == (# = str_ptr - 1)
@@ -29884,6 +29890,9 @@ close_node:print_write_whatsit("closeout",p);
special_node:begin print_esc("special");
print_mark(write_tokens(p));
end;
+latespecial_node:begin print_esc("special"); print(" shipout");
+ print_mark(write_tokens(p));
+ end;
language_node:begin print_esc("setlanguage");
print_int(what_lang(p)); print(" (hyphenmin ");
print_int(what_lhm(p)); print_char(",");
@@ -29916,7 +29925,7 @@ endcases
case subtype(p) of
open_node: begin r:=get_node(open_node_size); words:=open_node_size;
end;
-write_node,special_node: begin r:=get_node(write_node_size);
+write_node,special_node,latespecial_node: begin r:=get_node(write_node_size);
add_token_ref(write_tokens(p)); words:=write_node_size;
end;
close_node,language_node: begin r:=get_node(small_node_size);
@@ -29944,7 +29953,7 @@ endcases
@ @<Wipe out the whatsit...@>=
begin case subtype(p) of
open_node: free_node(p,open_node_size);
-write_node,special_node: begin delete_token_ref(write_tokens(p));
+write_node,special_node,latespecial_node: begin delete_token_ref(write_tokens(p));
free_node(p,write_node_size); goto done;
end;
close_node,language_node: free_node(p,small_node_size);
@@ -30226,9 +30235,18 @@ that actually send out the requested data. Let's do \.{\\special} first
procedure special_out(@!p:pointer);
var old_setting:0..max_selector; {holds print |selector|}
@!k:pool_pointer; {index into |str_pool|}
+@!q,@!r:pointer; {temporary variables for list manipulation}
+@!old_mode:integer; {saved |mode|}
begin synch_h; synch_v;@/
doing_special:=true;
old_setting:=selector; selector:=new_string;
+selector:=old_setting;
+if subtype(p)=latespecial_node then
+ begin @<Expand macros in the token list
+ and make |link(def_ref)| point to the result@>;
+ write_tokens(p):=def_ref;
+ end;
+selector:=new_string;
show_token_list(link(write_tokens(p)),null,pool_size-pool_ptr);
selector:=old_setting;
str_room(1);
@@ -30355,7 +30373,7 @@ var j:small_number; {write stream number}
begin case subtype(p) of
open_node,write_node,close_node:@<Do some work that has been queued up
for \.{\\write}@>;
-special_node:special_out(p);
+special_node,latespecial_node:special_out(p);
language_node:do_nothing;
othercases confusion("ext4")
@:this can't happen ext4}{\quad ext4@>