August 2025 - dev-luatex

Re: Building LuaTeX with harfbuzz-subset.a
by Patrick Gundlach 29 Aug '25

29 Aug '25

> Am 27.08.2025 um 19:45 schrieb luigi scarso <luigi.scarso(a)gmail.com>: > > Probably it's better if you make a github repo luatex-hb-subset, so we can develop it there. > The size is still acceptable, if it will be all ok at the end I can push it mainstream. https://github.com/speedata/luatex/tree/subset-luaharfbuzz (my code which uses this LuaTeX variant makes a full subset of a variable font with certain axis fixed, so this is working code but still not fully integrated in LuaTeX) Patrick

2 3

lang.hyphenation
by Josef Friedrich 28 Aug '25

28 Aug '25

Dear Luigi! I think that the heading for the `land.clear_hyphenation` and `land.clean` functions has slipped between the function signature and the function description of the `lang.hyphenation` function. I have also attached the patch. --- a/manual/luatex-languages.tex +++ b/manual/luatex-languages.tex @@ -970,15 +970,15 @@ You can hyphenate a string directly with: lang.hyphenation(<language> l, <string> n) \stopfunctioncall +This either returns the current hyphenation exceptions for this language, or adds +new ones. The syntax of the string is explained in~\in {section} +[patternsexceptions]. + \subsection {\type {clear_hyphenation} and \type {clean}} \libindex {clear_hyphenation} \libindex {clean} -This either returns the current hyphenation exceptions for this language, or adds -new ones. The syntax of the string is explained in~\in {section} -[patternsexceptions]. - \startfunctioncall lang.clear_hyphenation(<language> l) \stopfunctioncall @@ -1110,4 +1110,3 @@ initialized due to \prm {savinghyphcodes} being larger than zero. % 12-34-\vrule width 1em height 1.5ex \par % 12-\hbox{34}-56 \par % 12-\vrule width 1em height 1.5ex-56 \par I also believe that the description “You can hyphenate a string directly with:” does not apply to the `hyphenation` function. Wouldn't this description fit better with the `lang.hyphenate` function? But the function `lang.hyphenate` does not work with strings but with node lists. But I’m sure ... Thank you in advance! Josef

2 3

Building LuaTeX with harfbuzz-subset.a
by Patrick Gundlach 27 Aug '25

27 Aug '25

Hello all, for my experiments I'd like to include the libharfbzz-subset.a in my build. Can anybody help me? I download LuaTeX from https://gitlab.lisn.upsaclay.fr/texlive/luatex and then I run Then I run ./build.sh --nojit --luahb in the luatex directory which builds build/texk/web2c/luahbtex. Actually, my current goal is to change luaharfbuzz to include subsetting API. But when I compile LuaTeX, I get the following errors: Undefined symbols for architecture arm64: "_register_set", referenced from: _luaopen_luaharfbuzz in libluaharfbuzz.a[10](libluaharfbuzz_a-luaharfbuzz.o) "_register_subset", referenced from: _luaopen_luaharfbuzz in libluaharfbuzz.a[10](libluaharfbuzz_a-luaharfbuzz.o) ld: symbol(s) not found for architecture arm64 clang++: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [luahbtex] Error 1 Patrick

2 8

Re: [XeTeX] Integrating Fontconfig into Mac Xetex
by Philip Taylor 26 Aug '25

26 Aug '25

On 26/08/2025 16:47, Herbert Schulz via XeTeX wrote: > Howdy, > > I may have it wrong but AFAIK XeTeX is at end of life and is no longer being developed/maintained. Recommendations are for LuaTeX (or LuaLaTeX for XeLaTeX). There are some differences but most things work the same or very similar ways. XeTeX may well be "at end of life", Herb, but it continues to do all that I want or (ever expect to) need. Were LuaTeX to offer the same degree of compatibility with Knuth’s TeX as does XeTeX, I would switch to it willingly, but all the while it deliberately chooses to differ from Knuth’s TeX in totally fundamental ways (e.g., the omission of the \mag primitive), I will continue to regard it as a non-starter. -- /Philip Taylor/

6 8