GNU bug report logs - #62278
28.2; Outline in DocTeX mode

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From: Arash Esbati <arash <at> gnu.org>
To: Jan Braun <Jan.Braun <at> klein-gallien.org>
Cc: 62278 <at> debbugs.gnu.org
Subject: bug#62278: 28.2; Outline in DocTeX mode
Date: Tue, 21 Mar 2023 08:43:57 +0100

Jan Braun <Jan.Braun <at> klein-gallien.org> writes:

> When I start it as 'emacs -Q <file>.dtx‘ it opens the requested file in
> DocTeX mode. 
>
> Next I load 'outline-minor-mode‘.  If I than run the command
> 'outline-hide-body‘ I’d expect to be presented with the various
> \section, \subsection, … commands.  But this does not happen. 
>
> Instead the first meta comment, the documentclass command and the
> document environment are displayed, see the text below.  Any other
> sectioning command is hidden.

I'd say this is by design: `latex-outline-regexp' defined in tex-mode.el
doesn't cater for headings which start with '%', but in doctex mode,
almost all of them do so.  So you have to tell doctex about it with this
piece of code (which I haven't tested) in your init file:

(add-hook 'doctex-mode-hook
          (lambda ()
            (setq-local latex-outline-regexp
                        (concat "[% \t]*" "\\\\"
                                (regexp-opt
                                 (append latex-metasection-list
		                         (mapcar #'car latex-section-alist))
                                 t))))
          (setq-local outline-regexp latex-outline-regexp))

Best, Arash

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