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From: Eli Zaretskii <eliz@gnu.org>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: 47488@debbugs.gnu.org, dgutov@yandex.ru, rrt@sc3d.org
Subject: bug#47488: Treatment of # in js.el
Date: Wed, 12 May 2021 16:53:21 +0300	[thread overview]
Message-ID: <83sg2s2h4e.fsf@gnu.org> (raw)
In-Reply-To: <87sg2sjcxa.fsf@gnus.org> (message from Lars Ingebrigtsen on Wed,  12 May 2021 15:32:01 +0200)

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Wed, 12 May 2021 15:32:01 +0200
> Cc: 47488@debbugs.gnu.org, Reuben Thomas <rrt@sc3d.org>
> 
> I've never heard of the #file directive, but:
> 
> ;; `cpp-font-lock-keywords-source-directives' is calculated from:
> ;;
> ;;	    (regexp-opt
> ;;	     '("define"  "elif" "else" "endif" "error" "file" "if" "ifdef"
> ;;	       "ifndef" "import" "include" "line" "pragma" "undef" "warning"))
> 
> I spent 30 seconds googling, and I could find no list of directive that
> includes #file, so...  Bug #warning is used, and so is #line, so perhaps
> it's an old thing?

The #file directive is emitted by the preprocessor, so that later
compiling the preprocessed source would yield the correct source line
numbers.  Try preprocessing some .c file with "gcc -E" and you will
see these directives in the output.





  reply	other threads:[~2021-05-12 13:53 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-29 21:28 bug#47488: Treatment of # in js.el Reuben Thomas via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-30  0:50 ` Dmitry Gutov
2021-05-08 12:43 ` Lars Ingebrigtsen
2021-05-09 11:18   ` Dmitry Gutov
2021-05-09 11:31     ` Dmitry Gutov
2021-05-10  8:29     ` Lars Ingebrigtsen
2021-05-10 12:12       ` Dmitry Gutov
2021-05-10  8:34     ` Reuben Thomas via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-10 12:14       ` Dmitry Gutov
2021-05-11 12:21         ` Lars Ingebrigtsen
2021-05-11 12:45           ` Dmitry Gutov
2021-05-12 13:32             ` Lars Ingebrigtsen
2021-05-12 13:53               ` Eli Zaretskii [this message]
2021-05-12 13:56                 ` Lars Ingebrigtsen
2021-05-12 14:39                 ` Andreas Schwab
2021-05-12 14:49                   ` Eli Zaretskii
2021-05-12 14:56               ` Dmitry Gutov

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