March 2023 - dev-luatex - NTG Mailing Lists

Luatex 1.12.0 announcement.
by luigi scarso 27 May '23

27 May '23

============================================================== LuaTeX 1.12.0 2020-03-15 ============================================================== This is the release for TeX live 2020. --shell-restricted now forbids loading of dso (dll/so object) Scaled virtual font Aadditional primitives \eTeXglue[stretch|shrink]order for querying order the etex way. Extra features runtoks tex.getmodenames() (as these can differ per engine/version) Permit nested runtoks in more complex situations of nesting (HH) More accurate and correct test for tex.[set|get]math Minor clean-up and bugs fixed -- luigi

4 8

Fix for pdf_literal Lua string / token list conversions
by Michal Vlasák 07 May '23

07 May '23

Hello, take this plain LuaTeX example: \setbox0=\hbox{\pdfextension literal{0 g}} % 1) \directlua{ local literal = tex.getbox(0).head texio.write_nl("log", "literal.data="..literal.data) } \showbox0 % 2) \directlua{ local literal = tex.getbox(0).head literal.data = "test" literal.token = "toks" texio.write_nl("log", "literal.token="..(literal.token or "nil")) } \showbox0 % 3) patch test \directlua{ tex.set("everyjob", "asd") texio.write_nl("log", tex.get("everyjob")) } \bye Expected log output (abridged): 1) literal.data=0 g .\pdfliteral origin{0 g} 2) literal.token=toks .\pdfliteral origin{toks} Actual output: 1) literal.data=data .\pdfliteral origin{0 g} 2) literal.token=characters .\pdfliteral origin <lua data reference 153> In the first case the Lua accessor returns a value which happens to be on top of the stack (the key "data" itself). In the second case an index into TeX memory is misinterpreted as a Lua registry index, so the returned data is essentially garbage. Patch for both issues is attached. I also extended `tokenlist_from_lua` (which is what `nodelib_gettoks` is defined as) to allow an index argument. The previous version used the value on top of the stack, which probably worked for every use currently in LuaTeX, but seemed rather dangerous and subtle. The patch is from git, though it can be applied normally with patch -Np1 < pdf_literal.patch Kind regards, Michal Vlasák

2 3

Typos in the manual
by Josef Friedrich 14 Mar '23

14 Mar '23

The functions todirect() and tonode() are only available in the node.direct.* namespace and not in node.* diff --git a/manual/luatex-nodes.tex b/manual/luatex-nodes.tex index 1367ea1fc..98ee29b57 100644 --- a/manual/luatex-nodes.tex +++ b/manual/luatex-nodes.tex @@ -2195,8 +2195,8 @@ number often is reported when you print node related information. You go from userdata nodes and there numeric references and back with: \startfunctioncall -<integer> d = node.todirect(<node> n)) -<node> n = node.tonode(<integer> d)) +<integer> d = node.direct.todirect(<node> n) +<node> n = node.direct.tonode(<integer> d) \stopfunctioncall The userdata model is rather robust as it is a virtual interface with some @@ -2437,8 +2437,8 @@ consistency. You can of course always define additional accessors using \type \supported {subtypes} \yes \nop \supported {subtype} \yes \nop \supported {tail} \yes \yes -\supported {todirect} \yes \yes -\supported {tonode} \yes \yes +\supported {todirect} \nop \yes +\supported {tonode} \nop \yes \supported {tostring} \yes \yes \supported {traverse_char} \yes \yes \supported {traverse_glyph} \yes \yes diff --git a/manual/luatex-graphics.tex b/manual/luatex-graphics.tex index 0e34a6528..54eed1757 100644 --- a/manual/luatex-graphics.tex +++ b/manual/luatex-graphics.tex @@ -822,7 +822,7 @@ anonymous capsules like loop variables are not accessible). <table> p = get_path (mp,<string> name) \stopfunctioncall -The path is returned a a table with subtables that have six numbers: the +The path is returned as a table with subtables that have six numbers: the coordinates of the point, pre- and postcontrol. A \type {cycle} fields indicates if a path is cyclic. diff --git a/manual/luatex-nodes.tex b/manual/luatex-nodes.tex index 1367ea1fc..2f9bdf299 100644 --- a/manual/luatex-nodes.tex +++ b/manual/luatex-nodes.tex @@ -1877,7 +1877,7 @@ word boundaries are possible). \startfunctioncall node.unprotect_glyph(<node> n) -node.unprotect_glyphs(<node> n,[<node> n]) +node.unprotect_glyphs(<node> n,[<node> m]) \stopfunctioncall Subtracts 256 from all glyph node subtypes. This and the next function are @@ -1891,7 +1891,7 @@ processing. The second argument is optional and indicates the end of a range. \startfunctioncall node.protect_glyph(<node> n) -node.protect_glyphs(<node> n,[<node> n]) +node.protect_glyphs(<node> n,[<node> m]) \stopfunctioncall Adds 256 to all glyph node subtypes in the node list starting at \type {n},

2 1

new luatex binary in TL pretest crashes when \directmeatpost is used
by Petr Olsak 01 Mar '23

01 Mar '23

Hello luatex developers, I installed TL pretest with new luatex binary and I found a bug in it, when \directmetapost defined in minim-mp package is used. Try the following file: \input minim-mp \directmetapost{ % define the pattern picture letter; letter = maketext("a"); beginpattern(a) draw letter rotated 45; matrix = identity rotated 45; endpattern(12pt,12pt); % use the pattern beginfig(1) fill fullcircle scaled 3cm withpattern(a) withcolor 3/4red; draw fullcircle scaled 3cm withpen pencircle scaled 1; endfig; } \bye and run luatex. The luatex from TL 2022 runs without problems but luatex from TL 2023 says: This is LuaTeX, Version 1.16.0 (TeX Live 2023) restricted system commands enabled. (./test.tex (/usr/local/texlive/2023/texmf-dist/tex/luatex/minim-mp/minim-mp.tex (/usr/local/texlive/2023/texmf-dist/tex/luatex/minim/minim-alloc.tex) (/usr/local/texlive/2023/texmf-dist/tex/luatex/minim/minim-pdfresources.tex)){/ usr/local/texlive/2023/texmf-var/fonts/map/pdftex/updmap/pdftex.map} ! error: (pdf backend): 2 unmatched 'save' after form shipout ! ==> Fatal error occurred, no output PDF file produced! Michal Vlasak noticed that the problem is probably related to the commit: https://gitlab.lisn.upsaclay.fr/texlive/luatex/-/commit/c1909e4a4c5311197a2… Best regards Petr Olsak

5 5