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From: Omar <omar.antolin@HIDDEN>
To: bug-auctex@HIDDEN
Subject: 12.1.1; LaTeX-outline-name can't handle long lines or braces in titles
Date: Thu, 05 Jul 2018 11:59:53 -0500
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Hello,
I noticed recently that imenu lists the names of section titles incorrectly under AucTeX, while it gives the titles I'd expect under Emacs' builtin tex-mode.el.
I narrowed down the problem to LaTeX-outline-name which gives the wrong answer in two situations:
1. If the section (or subsection, etc.) title is very long, namely, if it ends in a column greater than fill-column plus 10, then LaTeX-outline-name reports the title as the first 20 characters in the line. This is particularly ugly since it means the title will start with "\section{" or somehting like that.
2. If the title contains a right brace, LaTeX-outline-name reports the title as ending at that brace.
This small document illustrates both problems:
\documentclass{article}
\begin{document}
\section{A title so utterly long that it exceeds the fill column by more than ten characters}
\section{Braces \emph{screw} this one up}
\end{document}
If fill-column is set to a reasonable value, the first section is too long and gets listed in imenu as "\section{A title so ". The second one gets truncated at the right brace: "\section{Braces \emph{screw".
The builtin tex-mode uses forward-sexp to allow balanced braces inside the section titles. In my personal configuration I've replace LaTeX-outline-name with:
(defun LaTeX-outline-name ()
"Guess a name for the current header line."
(save-excursion
(search-forward "{" nil t)
(let ((beg (point)))
(forward-char -1)
(condition-case nil
(progn
(forward-sexp 1)
(forward-char -1))
(error (forward-sentence 1)))
(buffer-substring beg (point)))))
This attempts to skip over the title using forward-sexp and in case of error uses forward-sentence instead. It seems to work on the files I noticed had a problem before, but I haven't done extensive testing.
Emacs : GNU Emacs 25.3.2 (i686-pc-linux-gnu, GTK+ Version 3.18.9)
of 2017-09-12
Package: 12.1.1
current state:
==============
(setq
AUCTeX-date "2018-03-20"
window-system 'x
LaTeX-version "2e"
TeX-style-path '("~/.emacs.d/auctex"
"/home/omar/.emacs.d/elpa/auctex-12.1.1/style" "/home/omar/.emacs.d/auctex/auto" "/home/omar/.emacs.d/auctex/style" "auto" "style")
TeX-auto-save nil
TeX-parse-self nil
TeX-master t
TeX-command-list '(("TeX"
"%(PDF)%(tex) %(file-line-error) %(extraopts) %`%S%(PDFout)%(mode)%' %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) %t"
TeX-run-compile nil
(texinfo-mode) :help
"Run Makeinfo with Info output")
("Makeinfo HTML"
"makeinfo %(extraopts) --html %t"
TeX-run-compile nil
(texinfo-mode) :help
"Run Makeinfo with HTML output")
("AmSTeX"
"amstex %(PDFout) %(extraopts) %`%S%(mode)%' %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 %s"
TeX-run-BibTeX nil t :help
"Run BibTeX")
("Biber" "biber %s" TeX-run-Biber
nil t :help "Run Biber")
("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 t :help
"Generate PostScript file")
("Dvips" "%(o?)dvips %d -o %f "
TeX-run-dvips nil t :help
"Convert DVI file to PostScript")
("Dvipdfmx" "dvipdfmx %d"
TeX-run-dvipdfmx nil t :help
"Convert DVI file to PDF with dvipdfmx")
("Ps2pdf" "ps2pdf %f"
TeX-run-ps2pdf nil t :help
"Convert PostScript file to PDF")
("Glossaries" "makeglossaries %s"
TeX-run-command nil t :help
"Run makeglossaries to create glossary file")
("Index" "makeindex %s"
TeX-run-index nil t :help
"Run makeindex to create index file")
("upMendex" "upmendex %s"
TeX-run-index t t :help
"Run upmendex to create index file")
("Xindy" "texindy %s"
TeX-run-command nil t :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")
)
)
Omar <omar.antolin@HIDDEN>:bug-auctex@HIDDEN.
Full text available.bug-auctex@HIDDEN:bug#32062; Package auctex.
Full text available.
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1994-97 Ian Jackson.