From: Paul Eggert <eggert@cs.ucla.edu>
To: Stefan Monnier <monnier@IRO.UMontreal.CA>, emacs-devel@gnu.org
Cc: Alan Mackenzie <acm@muc.de>
Subject: Re: [Emacs-diffs] emacs-25 326ffcc: Allow line comments ending with escaped NL to be continued to the next line.
Date: Mon, 28 Dec 2015 08:41:23 -0800 [thread overview]
Message-ID: <56816633.5050603@cs.ucla.edu> (raw)
In-Reply-To: <jwv8u4eimd7.fsf-monnier+emacsdiffs@gnu.org>
Stefan Monnier wrote:
> Hmm... the way I read this, it would mean that
>
> /*blabla\*/
>
> will be treated as an unclosed comment. Is that the way C defines it as well?
No, that's a closed comment. More interestingly, this:
/\
\
*blabla*\
\
/
printf ("\
\\
n\
");
is a closed comment followed by printf ("\n"), because backslash-newline removal
is done before tokenization. So the "right" fix would be to ignore
backslash-newline before identifying comments and other tokens.
Backslash-backslash-newline can be tricky, as I recall from long ago when I was
hacking on the GNU C preprocessor.
next prev parent reply other threads:[~2015-12-28 16:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20151228160034.7510.58055@vcs.savannah.gnu.org>
[not found] ` <E1aDaDr-0001xo-1I@vcs.savannah.gnu.org>
2015-12-28 16:14 ` [Emacs-diffs] emacs-25 326ffcc: Allow line comments ending with escaped NL to be continued to the next line Stefan Monnier
2015-12-28 16:41 ` Paul Eggert [this message]
2015-12-28 19:25 ` Alan Mackenzie
2015-12-28 19:21 ` Alan Mackenzie
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