dev-luatex August 2019

dev-luatex@ntg.nl

3 participants
5 discussions

wrong no-file-line-error option
by Hironobu Yamashita 17 Jan '20

17 Jan '20

Hi, The command-line option -no-file-line-error behaves exactly the same as -file-line-error. hironobu$ cat test.tex \x hironobu$ echo x | luatex test This is LuaTeX, Version 1.10.0 (TeX Live 2020/dev) restricted system commands enabled. (./test.tex ! Undefined control sequence. l.1 \x ? warning (pdf backend): no pages of output. Transcript written on test.log. hironobu$ echo x | luatex -file-line-error test This is LuaTeX, Version 1.10.0 (TeX Live 2020/dev) restricted system commands enabled. (./test.tex ./test.tex:1: Undefined control sequence. l.1 \x ? warning (pdf backend): no pages of output. Transcript written on test.log. hironobu$ echo x | luatex -no-file-line-error test This is LuaTeX, Version 1.10.0 (TeX Live 2020/dev) restricted system commands enabled. (./test.tex ./test.tex:1: Undefined control sequence. l.1 \x ? warning (pdf backend): no pages of output. Transcript written on test.log. hironobu$ Best, Hironobu

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Luatex 1.08.0 announcement
by luigi scarso 28 Oct '19

28 Oct '19

============================================================== LuaTeX 1.08 2018-08-28 ============================================================== (1) This release is a prelude to 1.10, the next stable iteration of LuaTeX after version 1.00. (2) Lua 5.3 is now considered to be default and we might use 5.4 in version 1.10. There are no real functional changed expected. You still need to rename the binary for 5.3! (3) Binary mode is no longer available in MPlib but it is still available in stand alone MetaPost. This simplifies compilation and reduces dependencies. (4) The dependency on Poppler for pdf image inclusion has been removed. We now use a small dedicated library written by Pawel Jakowski. We no longer need c++ compilers. We're in the process of making it behave well on all platforms. It has been tested on intel platforms. (5) We know that there can be some (alignment) issues with the arm platform but these are looked into. Therefore, later this year we will release 1.09. Version 1.10 is planned for TeXlive. We hope that ffi works ok on intel and arm platforms at that point. (6) There have been some extensions to the Lua libraries and some callbacks have been added. Also, a few new primitives have been introduced. The documentation mentions the stable extensions. (7) There are the usual bug fixes and cleanups but there have been no real fundamental changes in the API. The LuaTeX team

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Assignments in runtoks
by Marcel Fabian Krüger 01 Sep '19

01 Sep '19

Hello, in current versions of LuaTeX, `runtoks` does not preserve token lists of ongoing assignments. Therefore running `runtoks` inside of `\edef` or similar replace the definition with the defined value of the last inner assignment. For example: \toks0{\def\innermacro{inner}} \edef\outermacro{outer\directlua{tex.runtoks(0)}} \show\outermacro \bye in plain TeX should show > \outermacro=macro: ->outer. but currently does show > \outermacro=macro: ->inner. instead. (As a side effect the reference count isn't updated, so for example \toks0{\def\innermacro{inner}\let\innermacro\undefined} \edef\outermacro{outer\directlua{tex.runtoks(0)}} \show\outermacro \bye starts printing hyphenation patterns on my system.) This can be fixed by saving scanner_status, warning_index and def_ref when entering local_control: diff --git a/source/texk/web2c/luatexdir/tex/maincontrol.c b/source/texk/web2c/luatexdir/tex/maincontrol.c index b01931dd1..284fb0ae3 100644 --- a/source/texk/web2c/luatexdir/tex/maincontrol.c +++ b/source/texk/web2c/luatexdir/tex/maincontrol.c @@ -1055,6 +1055,10 @@ extern void local_control_message(const char *s) void local_control(void) { int ll = local_level; + int save_scanner_status = scanner_status; + halfword save_def_ref = def_ref; + halfword save_warning_index = warning_index; + main_control_state = goto_next; local_level += 1; while (1) { @@ -1077,14 +1081,17 @@ void local_control(void) if (tracing_nesting_par > 2) { local_control_message("leaving due to level change"); } - return ; + break; } else if (main_control_state == goto_return) { if (tracing_nesting_par > 2) { local_control_message("leaving due to triggering"); } - return; + break; } } + scanner_status = save_scanner_status; + def_ref = save_def_ref; + warning_index = save_warning_index; return; }

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Argument checking in ltexlib.c
by Marcel Fabian Krüger 23 Aug '19

23 Aug '19

Hello, in tex_setmathparm and tex_getmathparm from ltexlib.c, `i` stores the index of the math parameter to query or set. Given that `i` is obtained through luaL_checkoption it should never have a invalid value. The function still check that `i` is in the valid range using the check if (i<0 && i>=math_param_last) { /* invalid spec, just ignore it */ I think this is a typo because i>=math_param_last (with math_param_last=114) implies i>0 and therefore this condition can never be true. Maybe || could be used instead of && or the check could be removed entirly. Marcel

3 2

tex.{get,set}math argument names
by Marcel Fabian Krüger 22 Aug '19

22 Aug '19

Hello, in tex/texmath.c, the `math_param_names` array is missing the entries `skewedfractionvgap` and `skewedfractionhgap`. This causes all array indices to be shifted and therefore a mismatch between the parameter names in Lua and the real names. For example: \showthe\Umathlimitabovevgap\displaystyle \showthe\Umathskewedfractionvgap\displaystyle \directlua{ print('limitabovevgap:', tex.getmath('limitabovevgap', 'display')) print('skewedfractionvgap:', tex.getmath('skewedfractionvgap', 'display')) } \bye results in > 1.11111pt. l.1 \showthe\Umathlimitabovevgap\displaystyle ? > 0.0pt. l.2 \showthe\Umathskewedfractionvgap\displaystyle ? limitabovevgap: 0 [\directlua]:1: bad argument #1 to 'getmath' (invalid option 'skewedfractionvga p') -- Marcel

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dev-luatex August 2019