From: "Daniel Martín" <mardani29@yahoo.es>
To: Ergus <spacibba@aol.com>
Cc: emacs-devel@gnu.org
Subject: Re: Issue with hide-ifdef and cc-mode
Date: Sun, 30 May 2021 13:01:36 +0200 [thread overview]
Message-ID: <m14keklc33.fsf@yahoo.es> (raw)
In-Reply-To: <20210530070822.h57mmtpp2n7dvpbf@Ergus> (Ergus's message of "Sun, 30 May 2021 09:08:22 +0200")
Ergus <spacibba@aol.com> writes:
>
> I am trying to use hide-ifdef to shadow code like:
>
> #if 0
> <code>
> #endif
>
> But I found that either
>
> #if 0
>
> or
> #if 1
>
> produces the same result disabling the code inside.
>
I tested the following from emacs -Q in Emacs 28:
New C buffer with
#if 0
int i = 0;
#endif
M-x hide-ifdef-mode
M-x hide-ifdef-toggle-shadowing
M-x hide-ifdefs
And the variable definition is shown with a comment font-lock face, as
expected.
If I change it to "#if 1" and M-x hide-ifdefs again, the comment
font-lock face is removed, as expected. Perhaps some Emacs
customization is getting in the way?
For something more complex than a #if 0, you probably need to ask the C
preprocessor or build system for the defined variables and configure
hide-ifdef-mode accordingly.
>
> Also when I remove the #if macros from around the code the shadow face
> sometimes persist.
>
This could be a bug. If you have some consistent steps to reproduce it,
you could report it via M-x report-emacs-bug.
next prev parent reply other threads:[~2021-05-30 11:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210530070822.h57mmtpp2n7dvpbf.ref@Ergus>
2021-05-30 7:08 ` Issue with hide-ifdef and cc-mode Ergus
2021-05-30 11:01 ` Daniel Martín [this message]
2021-05-30 18:14 ` Ergus
2021-05-30 18:53 ` Eli Zaretskii
2021-05-30 19:27 ` Ergus
2021-05-31 11:56 ` Eli Zaretskii
2021-05-30 19:42 ` Stefan Monnier
2021-05-30 20:26 ` Ergus
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