From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: passing data to process sentinel Date: Fri, 15 Sep 2006 11:01:15 -0600 Organization: IHS Message-ID: References: <450a8bcc$0$19463$8404b019@news.wineasy.se> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1158339780 26568 80.91.229.2 (15 Sep 2006 17:03:00 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 15 Sep 2006 17:03:00 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Sep 15 19:02:59 2006 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1GOH5P-0002QQ-5i for geh-help-gnu-emacs@m.gmane.org; Fri, 15 Sep 2006 19:02:43 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GOH5O-0003bE-PU for geh-help-gnu-emacs@m.gmane.org; Fri, 15 Sep 2006 13:02:42 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1GOH4u-0003Fi-0d for help-gnu-emacs@gnu.org; Fri, 15 Sep 2006 13:02:12 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1GOH4s-0003Dd-Du for help-gnu-emacs@gnu.org; Fri, 15 Sep 2006 13:02:11 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GOH4s-0003DS-8I for help-gnu-emacs@gnu.org; Fri, 15 Sep 2006 13:02:10 -0400 Original-Received: from [80.91.229.2] (helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1GOH74-0000VK-Ui for help-gnu-emacs@gnu.org; Fri, 15 Sep 2006 13:04:27 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1GOH4l-0002FV-23 for help-gnu-emacs@gnu.org; Fri, 15 Sep 2006 19:02:03 +0200 Original-Received: from 207.167.42.206 ([207.167.42.206]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 15 Sep 2006 19:02:03 +0200 Original-Received: from ihs_4664 by 207.167.42.206 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 15 Sep 2006 19:02:03 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-To: help-gnu-emacs@gnu.org Original-Lines: 40 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 207.167.42.206 User-Agent: Thunderbird 1.5.0.5 (Windows/20060719) In-Reply-To: <450a8bcc$0$19463$8404b019@news.wineasy.se> X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:37392 Archived-At: Gordon Beaton wrote: > I run tkdiff from emacs to compare the current buffer contents with > the corresponding saved file. tkdiff needs two filenames, so I start > by storing the buffer contents to a temporary file created by > make-temp-file. > > I'd like to be able to pass the name of the temporary file to a > process sentinel so it can be cleaned up after tkdiff exits, for > example by attaching the filename to the process object itself where > it can be retrieved in the sentinel. To me this seems more elegant > than storing the filename elsewhere and looking it up. > > One solution I'd like to see is something like this, but of course > neither set-process-sentinel nor the sentinel itself take the > additional argument: > > (set-process-sentinel > (start-process "tkdiff" nil "tkdiff" (buffer-file-name) temp-file) > 'my-sentinel temp-file) > > (defun my-sentinel (process event mydata) > (if (file-exists-p mydata) (delete-file mydata))) > > I was hoping that something like the following might work, but > temp-file doesn't seem to get bound in the lambda function: > > (set-process-sentinel > (start-process "tkdiff" nil "tkdiff" (buffer-file-name) temp-file) > (lambda (process event) > (if (file-exists-p temp-file) (delete-file temp-file)))) Backquote is your friend: (set-process-sentinel (start-process "tkdiff" nil "tkdiff" (buffer-file-name) temp-file) `(lambda (process event) (if (file-exists-p ,temp-file) (delete-file ,temp-file)))) -- Kevin