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bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_
From: |
Yuan Fu |
Subject: |
bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE |
Date: |
Fri, 21 Apr 2023 13:37:08 -0700 |
Eli Zaretskii <eliz@gnu.org> writes:
> To reproduce:
>
> emacs -Q
> C-x C-f src/fns.c RET
> C-u 3365 M-g g
>
> Observe that "if" and "STRINGP" in the body of FOR_EACH_TAIL_SAFE are
> fontified in font-lock-function-name-face. This is because the
> FOR_EACH_TAIL_SAFE macro is misparsed by tree-sitter as a declaration.
>
> Can we teach c-ts-mode to recognize FOR_EACH_TAIL_SAFE and
> FOR_EACH_TAIL for what they are, perhaps conditioned on
> c-ts-mode-emacs-sources-support being non-nil?
I’m aware of this issue, but the truth is there isn’t a good solution to
it. We need to recognize FOR_EACH_TAIL_SAFE (not hard) and fix arbitrary
code after it (hard). In this case it’s a if statement, with macro calls
and AND operation in it’s condition, it’s already three things we need
to recognize and somehow handle. It can also be a for loop, a switch
case, a function call, a while loop. If we want to fix FOR_EACH_TAIL we
would need to handle every possible thing, at that point we might as
well have wrote a parser :-)
We can probably fix this very particular case, but it’s still work and
overhead, and doesn’t mean much.
Yuan
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Eli Zaretskii, 2023/04/19
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE,
Yuan Fu <=
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Eli Zaretskii, 2023/04/22
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Dmitry Gutov, 2023/04/23
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Yuan Fu, 2023/04/26
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Yuan Fu, 2023/04/26
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Eli Zaretskii, 2023/04/27
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Yuan Fu, 2023/04/27
- bug#62951: 29.0.90; c-ts-mode: Incorrect fontification due to FOR_EACH_TAIL_SAFE, Eli Zaretskii, 2023/04/28