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: tags, yet again Date: Tue, 30 Aug 2005 10:49:12 -0600 Message-ID: References: <87d5nwgk65.fsf@buug.org> 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 1125421320 11606 80.91.229.2 (30 Aug 2005 17:02:00 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Tue, 30 Aug 2005 17:02:00 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Aug 30 19:01:55 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1EA9Sr-0007CF-25 for geh-help-gnu-emacs@m.gmane.org; Tue, 30 Aug 2005 19:00:01 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1EA9Wz-0005a2-To for geh-help-gnu-emacs@m.gmane.org; Tue, 30 Aug 2005 13:04:17 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1EA9VP-00054N-3Z for help-gnu-emacs@gnu.org; Tue, 30 Aug 2005 13:02:39 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1EA9VK-00052d-UM for help-gnu-emacs@gnu.org; Tue, 30 Aug 2005 13:02:37 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1EA9VK-0004ze-It for help-gnu-emacs@gnu.org; Tue, 30 Aug 2005 13:02:34 -0400 Original-Received: from [80.91.229.2] (helo=ciao.gmane.org) by monty-python.gnu.org with esmtp (TLS-1.0:RSA_AES_128_CBC_SHA:16) (Exim 4.34) id 1EA9OP-0001dN-4W for help-gnu-emacs@gnu.org; Tue, 30 Aug 2005 12:55:26 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1EA9Ir-0003tj-M2 for help-gnu-emacs@gnu.org; Tue, 30 Aug 2005 18:49:42 +0200 Original-Received: from 207.167.42.60 ([207.167.42.60]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 30 Aug 2005 18:49:41 +0200 Original-Received: from ihs_4664 by 207.167.42.60 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 30 Aug 2005 18:49:41 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-To: help-gnu-emacs@gnu.org Original-Lines: 53 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 207.167.42.60 User-Agent: Mozilla Thunderbird 0.9 (X11/20041105) X-Accept-Language: en-us, en In-Reply-To: <87d5nwgk65.fsf@buug.org> 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:29101 Archived-At: Ian Zimmerman wrote: > Does anyone actually understand the algorithm for selecting a location > to jump to with Alt-. ? > > The documentation for find-tag-noselect says: > When there are multiple matches for a tag, more exact matches are found first. The source for find-tag-noselect says: ;; find-tag-in-order does the real work. And the source for find-tag-in-order says: ;; Internal tag finding function. ;; PATTERN is a string to pass to second arg SEARCH-FORWARD-FUNC, and to ;; any member of the function list ORDER (third arg). If ORDER is nil, ;; use saved state to continue a previous search. ;; Fourth arg MATCHING is a string, an English '-ing' word, to be used in ;; an error message. ;; Fifth arg NEXT-LINE-AFTER-FAILURE-P is non-nil if after a failed match, ;; point should be moved to the next line. ;; Algorithm is as follows. For each qualifier-func in ORDER, go to ;; beginning of tags file, and perform inner loop: for each naive match for ;; PATTERN found using SEARCH-FORWARD-FUNC, qualify the naive match using ;; qualifier-func. If it qualifies, go to the specified line in the ;; specified source file and return. Qualified matches are remembered to ;; avoid repetition. State is saved so that the loop can be continued. > But, I've frequently seen Alt-. to jump to a differently capitalized version > of the symbol under point first, even when there's an exact match available. ,----[ C-h v tags-case-fold-search RET ] | tags-case-fold-search's value is default | | Documentation: | *Whether tags operations should be case-sensitive. | A value of t means case-insensitive, a value of nil means case-sensitive. | Any other value means use the setting of `case-fold-search'. | | You can customize this variable. | | Defined in `etags'. `---- -- Kevin Rodgers