GNU bug report logs - #62997
13.1.10; LaTeX-xparse-macro-parse in xparse.el fails when opening a LaTeX file

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Yuki Nishida <nishida <at> rsworks.jp>
Subject: bug#62997: closed (Re: bug#62997: 13.1.10; LaTeX-xparse-macro-parse
 in xparse.el fails when opening a LaTeX file)
Date: Mon, 24 Apr 2023 08:00:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#62997: 13.1.10; LaTeX-xparse-macro-parse in xparse.el fails when opening a LaTeX file

which was filed against the auctex package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 62997 <at> debbugs.gnu.org.

-- 
62997: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=62997
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Arash Esbati <arash <at> gnu.org>
To: Yuki Nishida <nishida <at> rsworks.jp>
Cc: 62997-done <at> debbugs.gnu.org
Subject: Re: bug#62997: 13.1.10; LaTeX-xparse-macro-parse in xparse.el fails
 when opening a LaTeX file
Date: Mon, 24 Apr 2023 09:58:36 +0200

Yuki Nishida <nishida <at> rsworks.jp> writes:

> The patch works.  The issue is solved.
> Many thanks for the fix.

Thanks for testing and your feedback.  I've installed that change;
therefore I'm closing this report.

Best, Arash

P.S. In future, please keep ###@debbugs.gnu.org in CC when replying.
Thanks.

[Message part 3 (message/rfc822, inline)]

From: Yuki Nishida <nishida <at> rsworks.jp>
To: bug-auctex <at> gnu.org
Subject: 13.1.10; LaTeX-xparse-macro-parse in xparse.el fails when opening a
 LaTeX file
Date: Fri, 21 Apr 2023 19:00:26 +0900

In a particular environment,  opening a LaTeX file for the first time fails with the *Backtrace* buffer that says LaTeX-xparse-macro-parse fails with (scan-error “Unbalanced parentheses” ...)

It seems to be caused by an xparse macro definition containing '(' as a token in an argument's specification like:

\NewDocumentCommand\FOO{>{\SplitArgument{1}{(}}m}

I suspect the implementation interprets '(}' as balanced parentheses and causes the scan-error.

Best regards,
Yuki

Emacs  : GNU Emacs 28.2 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6 (Build 18G95))
of 2022-09-13
Package: 13.1.10

current state:
==============
(setq
AUCTeX-date "2023-03-05"
window-system 'ns
LaTeX-version "2e"
TeX-style-path '("/usr/local/var/auctex" "/Users/nishida/.emacs.d/elpa/auctex-13.1.10/style"
                 "/Users/nishida/.emacs.d/auctex/auto" "/Users/nishida/.emacs.d/auctex/style"
                 "auto" "style")
TeX-auto-save t
TeX-parse-self t
TeX-master nil
TeX-command-list '(("Latexmk" "latexmk %t" TeX-run-TeX nil (latex-mode) :help "Run Latexmk")
                   ("Make" "make -j" TeX-run-TeX nil t)
                   ("TeX"
                    "%(PDF)%(tex) %(file-line-error) %`%(extraopts) %S%(PDFout)%(mode)%' %(output-dir) %t"
                    TeX-run-TeX nil (plain-tex-mode ams-tex-mode texinfo-mode) :help
                    "Run plain TeX")
                   ("LaTeX" "%`%l%(mode)%' %T" TeX-run-TeX nil (latex-mode doctex-mode) :help
                    "Run LaTeX")
                   ("Makeinfo" "makeinfo %(extraopts) %(o-dir) %t" TeX-run-compile nil
                    (texinfo-mode) :help "Run Makeinfo with Info output")
                   ("Makeinfo HTML" "makeinfo %(extraopts) %(o-dir) --html %t" TeX-run-compile
                    nil (texinfo-mode) :help "Run Makeinfo with HTML output")
                   ("AmSTeX" "amstex %(PDFout) %`%(extraopts) %S%(mode)%' %(output-dir) %t"
                    TeX-run-TeX nil (ams-tex-mode) :help "Run AMSTeX")
                   ("ConTeXt" "%(cntxcom) --once --texutil %(extraopts) %(execopts)%t"
                    TeX-run-TeX nil (context-mode) :help "Run ConTeXt once")
                   ("ConTeXt Full" "%(cntxcom) %(extraopts) %(execopts)%t" TeX-run-TeX nil
                    (context-mode) :help "Run ConTeXt until completion")
                   ("BibTeX" "bibtex %(O?aux)" TeX-run-BibTeX nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode context-mode)
                    :help "Run BibTeX")
                   ("Biber" "biber %(output-dir) %s" TeX-run-Biber nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Run Biber")
                   ("Texindex" "texindex %s.??" TeX-run-command nil (texinfo-mode) :help
                    "Run Texindex")
                   ("Texi2dvi" "%(PDF)texi2dvi %t" TeX-run-command nil (texinfo-mode) :help
                    "Run Texi2dvi or Texi2pdf")
                   ("View" "%V" TeX-run-discard-or-function t t :help "Run Viewer")
                   ("Print" "%p" TeX-run-command t t :help "Print the file")
                   ("Queue" "%q" TeX-run-background nil t :help "View the printer queue" :visible
                    TeX-queue-command)
                   ("File" "%(o?)dvips %d -o %f " TeX-run-dvips t
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Generate PostScript file")
                   ("Dvips" "%(o?)dvips %d -o %f " TeX-run-dvips nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Convert DVI file to PostScript")
                   ("Dvipdfmx" "dvipdfmx -o %(O?pdf) %d" TeX-run-dvipdfmx nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Convert DVI file to PDF with dvipdfmx")
                   ("Ps2pdf" "ps2pdf %f %(O?pdf)" TeX-run-ps2pdf nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Convert PostScript file to PDF")
                   ("Glossaries" "makeglossaries %(d-dir) %s" TeX-run-command nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Run makeglossaries to create glossary file")
                   ("Index" "makeindex %(O?idx)" TeX-run-index nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Run makeindex to create index file")
                   ("upMendex" "upmendex %(O?idx)" TeX-run-index t
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Run upmendex to create index file")
                   ("Xindy" "texindy %s" TeX-run-command nil
                    (plain-tex-mode latex-mode doctex-mode ams-tex-mode texinfo-mode) :help
                    "Run xindy to create index file")
                   ("Check" "lacheck %s" TeX-run-compile nil (latex-mode) :help
                    "Check LaTeX file for correctness")
                   ("ChkTeX" "chktex -v6 %s" TeX-run-compile nil (latex-mode) :help
                    "Check LaTeX file for common mistakes")
                   ("Spell" "(TeX-ispell-document \"\")" TeX-run-function nil t :help
                    "Spell-check the document")
                   ("Clean" "TeX-clean" TeX-run-function nil t :help
                    "Delete generated intermediate files")
                   ("Clean All" "(TeX-clean t)" TeX-run-function nil t :help
                    "Delete generated intermediate and output files")
                   ("Other" "" TeX-run-command t t :help "Run an arbitrary command"))
)

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