* bug#5799: 24.0.50; Case and search problems in unibyte buffers
@ 2010-03-29 20:48 bojohan
2010-03-29 21:43 ` Eli Zaretskii
2011-09-18 20:01 ` Lars Magne Ingebrigtsen
0 siblings, 2 replies; 3+ messages in thread
From: bojohan @ 2010-03-29 20:48 UTC (permalink / raw)
To: 5799
http://lists.gnu.org/archive/html/help-gnu-emacs/2010-03/msg00246.html
This correctly finds a \377 character in a unibyte buffer:
(let ((case-fold-search nil)) (search-forward "\377"))
This fails to match \377 and actually finds \277 instead:
(let ((case-fold-search t)) (search-forward "\377"))
`downcase' behaves strangely too:
(let ((default-enable-multibyte-characters nil))
(with-temp-buffer
(downcase 255)))
=> 4194303
These problems exist in trunk and Emacs 23, and did not occur in
Emacs 22.
^ permalink raw reply [flat|nested] 3+ messages in thread* bug#5799: 24.0.50; Case and search problems in unibyte buffers 2010-03-29 20:48 bug#5799: 24.0.50; Case and search problems in unibyte buffers bojohan @ 2010-03-29 21:43 ` Eli Zaretskii 2011-09-18 20:01 ` Lars Magne Ingebrigtsen 1 sibling, 0 replies; 3+ messages in thread From: Eli Zaretskii @ 2010-03-29 21:43 UTC (permalink / raw) To: bojohan; +Cc: 5799 > From: bojohan@gnu.org > Date: Mon, 29 Mar 2010 22:48:08 +0200 > Cc: > > `downcase' behaves strangely too: > > (let ((default-enable-multibyte-characters nil)) > (with-temp-buffer > (downcase 255))) > => 4194303 This part is by design, I think: see the node "Character Codes" in the ELisp manual. 4194303 is the internal multibyte representation of the raw byte 255, part of the eight-bit charset. ^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#5799: 24.0.50; Case and search problems in unibyte buffers 2010-03-29 20:48 bug#5799: 24.0.50; Case and search problems in unibyte buffers bojohan 2010-03-29 21:43 ` Eli Zaretskii @ 2011-09-18 20:01 ` Lars Magne Ingebrigtsen 1 sibling, 0 replies; 3+ messages in thread From: Lars Magne Ingebrigtsen @ 2011-09-18 20:01 UTC (permalink / raw) To: bojohan; +Cc: rasmith, 5799 bojohan@gnu.org writes: > http://lists.gnu.org/archive/html/help-gnu-emacs/2010-03/msg00246.html > > This correctly finds a \377 character in a unibyte buffer: > > (let ((case-fold-search nil)) (search-forward "\377")) > > This fails to match \377 and actually finds \277 instead: > > (let ((case-fold-search t)) (search-forward "\377")) I'm no longer able to reproduce this bug, so I think it was fixed by Andreas' recent fixes in this area. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog http://lars.ingebrigtsen.no/ ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-09-18 20:01 UTC | newest] Thread overview: 3+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2010-03-29 20:48 bug#5799: 24.0.50; Case and search problems in unibyte buffers bojohan 2010-03-29 21:43 ` Eli Zaretskii 2011-09-18 20:01 ` Lars Magne Ingebrigtsen
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