From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.bugs Subject: bug#5312: Why is =?utf-8?q?=E2=80=98show-trailing-whitespace?= =?utf-8?b?4oCZ?= considered unsafe? 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Thu, 07 Jan 2010 15:17:52 +0100 Original-Received: from kevin.d.rodgers by c-71-237-24-138.hsd1.co.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 07 Jan 2010 15:17:52 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 21 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: c-71-237-24-138.hsd1.co.comcast.net User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812) In-Reply-To: X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) X-Spam-Score: -5.9 (-----) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list X-Spam-Score: -5.9 (-----) Resent-Date: Thu, 07 Jan 2010 09:19:01 -0500 X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:34031 Archived-At: Stefan Monnier wrote: > Stefan> Of course, maybe you can come up with file formats where trailing > Stefan> whitespaces are seriously problematic as well. I just can't think > Stefan> of any off the top of my head. > >> One seen recently -- on the groff list, IIRC -- involved continuation >> lines. <\> works, <\> does not. > > That also affects C, C++, Elisp, and many other formats. The fact that we > haven't mentioned them indicates that it's not considered "seriously > problematic" enough. > Actually, font-lock can also be used in those modes to highlight such > suspicious forms: it's more useful than show-trailing-whitespace since > it can more specifically target those trailing whitespaces that are > semantically significant. Regardless, show-trailing-whitespace is safe. -- Kevin Rodgers Denver, Colorado, USA