Re: Universal Ctags: Don't read config files; New 'ctagsoptfile' configuration variable

[Shigio YAMAGUCHI]

Hi,
For now I will only fix the bug caused by the following file:

> [$HOME/.config/ctags/conf.ctags]
> +--------------------------------
> |--tag-relative=always

I'm going to fix it by overriding option method.

This bug is very hard to find. I think many people gave up using
Universal Ctags plug-in parser because of the bug in the past.
Thank you for your report and suggestion!

Regards,
Shigio

On Mon, Apr 24, 2023 at 5:02 PM Olivier Certner <ocert.dev@free.fr> wrote:
>
> > I don't think 'ctagsopt' is necessary. I prefer 'ctagsoptfile' instead
> > because it is simple and it keeps a clear boundary between Ctags and Global.
> > The complexity of 'ctagsopt' does not match the usefulness of it.
> > The reason why I suggested 'ctagsopt' is because I didn't understand
> > 'ctags-gtags.conf' is a ctags's configuration file.
>
> 'ctagsoptfile' is indeed simpler. 'ctagsopt' is currently complicated because
> of the proposed low-level implementation, but could be made quite simple with
> the proper abstractions (in passing, the argument preparation code, currently
> duplicated for both Windows and UNIX, should be merged and common, with the
> exception of small specific functions). So I personally wouldn't reject it
> only on the ground of its current complexity. But, personally again,
> 'ctagsoptfile' is enough for me also.
>
> > I have two questions:
> > Q1. Your patch seems to fix the bug. But if the configuration file specified
> >     by 'ctagsoptfile' contains inconvenient options, will that bug occur
> again?
>
> Yes, in this case the bug will occur again. 'ctagsoptfile' opens up the
> possibility to have a different set of options for manual uses of Universal
> Ctags and other set(s) specifically for gtags. So it is useful on its own,
> even if for the original problem it is indeed a workaround.
>
> I don't know exactly which options of Universal Ctags are troublesome in the
> sense that they modify the format established through the "--_xformat" option
> (might even be a bug of Universal Ctags).
>
> > Q2. It seems that patched Universal Ctags plug-in parser does not load
> >     any ctags configuration files automatically. It means an incompatible
> >     change.  Is it right?
>
> Yes.
>
> Regards.
>
> --
> Olivier Certner
>
>
>


-- 
Shigio YAMAGUCHI <shigio@gnu.org>
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