bug#53749: 29.0.50; [PATCH] Xref backend for TeX buffers

[David Fussner via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Hi Arash,

Thank you for the list!  I had fully intended to add the new LaTeX 3
commands but managed somehow to forget.  If you see anything else I've
omitted please let me know.

David.

On Mon, 21 Feb 2022 at 12:36, Arash Esbati <arash@gnu.org> wrote:
>
> David Fussner via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" <bug-gnu-emacs@gnu.org> writes:
>
> > diff --git a/lib-src/etags.c b/lib-src/etags.c
> > index aa5bc8839d..e5269aa456 100644
> > --- a/lib-src/etags.c
> > +++ b/lib-src/etags.c
> > [...]
> >  /* Default set of control sequences to put into TEX_toktab.
> > -   The value of environment var TEXTAGS is prepended to this.  */
> > +   The value of environment var TEXTAGS is prepended to this.
> > +   (2021) Add variants of '\def', some additional LaTeX commands,
> > +   and common variants from the 'etoolbox' package.  Also, add
> > +   starred variants of the commands if they exist.  Starred
> > +   variants need to appear before their unstarred versions. */
> >  static const char *TEX_defenv = "\
> > -:chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem\
> > -:part:appendix:entry:index:def\
> > -:newcommand:renewcommand:newenvironment:renewenvironment";
> > +:chapter*:section*:subsection*:subsubsection*:part*:label:ref\
> > +:chapter:section:subsection:subsubsection:eqno:cite:bibitem\
> > +:part:appendix:entry:index:def:edef:gdef:xdef:newcommand*:newcommand\
> > +:renewcommand*:renewcommand:newenvironment*:newenvironment\
> > +:renewenvironment*:renewenvironment:DeclareRobustCommand*\
> > +:DeclareRobustCommand:renewrobustcmd*:renewrobustcmd:newrobustcmd*\
> > +:newrobustcmd:let:csdef:csedef:csgdef:csxdef:csletcs:cslet";
>
> Hi David,
>
> thanks for looking into this.  While you're at it, can you also please
> add support for the former xparse \newcommand variants which are now
> (now is October 2020) part of LaTeX kernel, namely:
>
> \NewDocumentCommand
> \RenewDocumentCommand
> \ProvideDocumentCommand
> \DeclareDocumentCommand
> \NewDocumentEnvironment
> \RenewDocumentEnvironment
> \ProvideDocumentEnvironment
> \DeclareDocumentEnvironment
> \NewExpandableDocumentCommand
> \RenewExpandableDocumentCommand
> \ProvideExpandableDocumentCommand
> \DeclareExpandableDocumentCommand
>
> TIA.  Best, Arash