GNU bug report logs - #78489
30.1.50; Using etags, Ada and xref-find-definitions doesn't find definitions

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Message #83 received at 78489 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: brownts <at> troybrown.dev, Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 78489 <at> debbugs.gnu.org
Subject: Re: bug#78489: 30.1.50; Using etags, Ada and xref-find-definitions
 doesn't find definitions
Date: Sat, 05 Jul 2025 10:59:00 +0300

> From: Stefan Monnier <monnier <at> iro.umontreal.ca>
> Cc: Eli Zaretskii <eliz <at> gnu.org>,  78489 <at> debbugs.gnu.org
> Date: Tue, 24 Jun 2025 18:11:31 -0400
> 
> Hi Troy,
> 
> > For a mode-specific solution, I'm currently using the following.  It
> > modifies the result of the completion table to remove the suffix, but
> > stores the suffix as a text property on the candidate.  Then the text
> > property is retrieved from within the annotation function to generate
> > the appropriate suffix.  In this example, I chose to use a more
> > descriptive suffix rather than reapplying the original one.  I'm also
> > using the text property to drive additional "company-kind" information
> > too.  This solution seems to be working well for me.
> 
> That seems like a much better solution than my exit-function, indeed.
> 
> I suggest adding it to `ada-mode` plus adding to `etag.el` a comment
> pointing to that ada-mode` code.
> 
> The `etags.el` comment is because `etags.el` now has partial support for
> those `/X` annotations.  This partial support is used only for Ada
> currently, but the way it's implemented in `etags.el` it can be used for
> any language, so it could make sense in the future to move your code
> into `etags.el`.
> 
> Another option would be to put the code directly in `etags.el`, and make
> it non-specific to Ada.  To reduce the cost of your wrapper, we could use
> an `etags--found-slash-x-annotation` variable which is set whenever we
> match the "/[...]" while reading the TAGS file, and then we only do the
> extra dance when that var is non-nil.

Ping!  Any further comments, or should I close this bug?

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