bug#72814: 31.0.50; Add a variable controlling doxygen support in C/C++/Java?

[Yuan Fu <casouri@gmail.com>]

> On Sep 9, 2024, at 2:50 AM, Vincenzo Pupillo <v.pupillo@gmail.com> wrote:
> 
> In data martedì 27 agosto 2024 14:22:16 CEST, Eli Zaretskii ha scritto:
>>> From: Yuan Fu <casouri@gmail.com>
>>> Date: Mon, 26 Aug 2024 20:13:52 -0700
>>> Cc: eliz@gnu.org,
>>> 
>>> vincenzo.pupillo@unimi.it
>>> 
>>> Yuan Fu <casouri@gmail.com> writes:
>>>> X-Debbugs-CC: eliz@gnu.org <mailto:eliz@gnu.org>,
>>>> vincenzo.pupillo@unimi.it
>>>> 
>>>> Should we add a custom option that controls whether to enable doxygen
>>>> support in c-ts-mode/c++-ts-mode/java-ts-mode?
>>>> 
>>>> Technically this isn’t a problem, since the doxygen support is only
>>>> enabled if there’s doxygen grammar on the system. But many people
>>>> (me) might install a grammar bundle that includes dozens of
>>>> grammars for convenience. Then the doxygen support would turn on when
>>>> the user doesn’t really intend to use it.
>>>> 
>>>> I propose we add custom options like c-ts-mode-enable-doxygen and set it
>>>> to t by default, so the default behavior is still to enable doxygen
>>>> support when the grammar for it exists, but people who don’t want to pay
>>>> for it can turn it off by setting the option to nil.
>>>> 
>>>> Yuan
>>> 
>>> Eli, WDYT?
>> 
>> I'm okay with such an option, but it should be careful to check
>> whether the corresponding grammar library is available, and offer a
>> user-friendly diagnostic if not.
> 
> Try to take a look at this patch. Is it okay?
> 
> Vincenzo
> <0001-Add-a-user-option-to-disable-Doxygen-syntax-highligh.patch>

Thanks for taking this up! I won’t signal a warning if doxygen grammar isn’t found. Imagine a user without doxygen grammar, and din’t change c-ts-mode-enable-doxygen: they’ll get a warning whenever they open a C file. We should either set c-ts-mode-enable-doxygen to nil by default, or not warn when doxygen grammar doesn’t exist. Otherwise, the patch looks good to me.

Yuan