Re: Missing features in c-ts-mode

[Ergus <spacibba@aol.com>]

Hi Eli and Theo:

Yes, I know that the feature is not very "popular" to be enabled by
default, but for parallel programming models based on pragmas (OpenMP,
OmpSs, OpenACC) it is very important.

Many people in my previous work moved to some other editor after years
using emacs due to these apparently "small" details. Every time they
wanted to indent a portion of code (i.e they added an if around it), all
the pragmas moved out of their place and needed manual fix.

On that moment I commented with Alan the possibility to make #pragma a
syntactc symbol which we could control its indentation like anything
else in c-mode (with +, ++, -, 0 or [0]). But he said that it required
too many changes to implement that and offered this "toggle" solution
good enough for me.

I will open the feature request in a moment, but just wanted to comment
the alternative solution more consistent and without an extra mode;
because maybe that way may be simpler now in the new mode??

Best,
Ergus

On Fri, Feb 17, 2023 at 02:20:59PM +0200, Eli Zaretskii wrote:
>> From: Theodor Thornhill <theo@thornhill.no>
>> Cc: Eli Zaretskii <eliz@gnu.org>, casouri@gmail.com, emacs-devel@gnu.org
>> Date: Fri, 17 Feb 2023 10:56:28 +0100
>>
>> >      #pragma parallel for first private(x) \
>> >          shared(y) etc
>> >      for (...) {
>> >          ....
>> >      }
>> > }
>> >
>> > In this case the pragma in column zero is very confusing. Alan added a
>> > new mode (c-toggle-cpp-indent-to-body) which worked around this issue a
>> > few years ago. I don't if it is possible to enable similar behavior with
>> > your change? Is is?
>> >
>> > Best,
>> > Ergus
>> >
>>
>> It's absolutely possible, but IMO that sounds like an improvement for
>> emacs 30, maybe?
>
>It depends on how simple and safe the change will be.  But yes, I'm
>okay with delaying this to Emacs 30 if the addition is complex enough.
>
>Thanks.
>