From: martin rudalics <rudalics@gmx.at>
To: rms@gnu.org
Cc: dmantipov@yandex.ru, Stefan Monnier <monnier@iro.umontreal.ca>,
emacs-devel@gnu.org
Subject: Re: get-live-buffer primitive
Date: Fri, 14 Sep 2012 11:00:59 +0200 [thread overview]
Message-ID: <5052F24B.9070304@gmx.at> (raw)
In-Reply-To: <E1TCGI9-00039W-OA@fencepost.gnu.org>
> Meanwhile, `get-buffer' will not find a dead buffer by name.
> So I don't see a need to create a `get-live-buffer' function.
> Unless the purpose were only to get an error if the argument
> is a dead buffer.
Just a few examples that could benefit from such a function:
Fset_window_buffer has
buffer = Fget_buffer (buffer_or_name);
CHECK_BUFFER (buffer);
if (NILP (BVAR (XBUFFER (buffer), name)))
error ("Attempt to display deleted buffer");
Finsert_buffer_substring
buf = Fget_buffer (buffer);
if (NILP (buf))
nsberror (buffer);
bp = XBUFFER (buf);
if (!BUFFER_LIVE_P (bp))
error ("Selecting deleted buffer");
Fcompare_buffer_substrings
buf1 = Fget_buffer (buffer1);
if (NILP (buf1))
nsberror (buffer1);
bp1 = XBUFFER (buf1);
if (!BUFFER_LIVE_P (bp1))
error ("Selecting deleted buffer");
...
buf2 = Fget_buffer (buffer2);
if (NILP (buf2))
nsberror (buffer2);
bp2 = XBUFFER (buf2);
if (!BUFFER_LIVE_P (bp2))
error ("Selecting deleted buffer");
Fset_buffer
buffer = Fget_buffer (buffer_or_name);
if (NILP (buffer))
nsberror (buffer_or_name);
if (!BUFFER_LIVE_P (XBUFFER (buffer)))
error ("Selecting deleted buffer");
martin
next prev parent reply other threads:[~2012-09-14 9:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 7:52 get-live-buffer primitive Dmitry Antipov
2012-09-13 12:44 ` Richard Stallman
2012-09-13 13:42 ` Stefan Monnier
2012-09-13 16:50 ` martin rudalics
2012-09-13 17:00 ` martin rudalics
2012-09-13 17:30 ` martin rudalics
2012-09-13 20:45 ` Richard Stallman
2012-09-14 9:00 ` martin rudalics [this message]
2012-09-13 12:58 ` Stefan Monnier
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