From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stephen Berman Newsgroups: gmane.emacs.help Subject: Re: insert gives args out of range Date: Fri, 16 Aug 2024 17:16:57 +0200 Message-ID: <87a5hcmr9y.fsf@gmx.net> References: <87plq8n66z.fsf@gmx.net> <87le0wn0ru.fsf@gmx.net> <87h6bkmz5k.fsf@gmx.net> <9gWogDhaCBXEnTOijkijtCrrcAbhYY04AgDjXlqWxAN1m7xvAUbl31U_6aBjyp6Q8iu2M7SIMHNmyvD0QJ6NnC2PSFHIpdgos1q7eVM-CLI=@protonmail.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27847"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Heime via Users list for the GNU Emacs text editor To: Heime Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Aug 16 17:17:43 2024 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1seyhz-00077j-Iz for geh-help-gnu-emacs@m.gmane-mx.org; 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envelope-from=stephen.berman@gmx.net; helo=mout.gmx.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:147717 Archived-At: On Fri, 16 Aug 2024 15:09:55 +0000 Heime wrot= e: > On Saturday, August 17th, 2024 at 3:01 AM, Heime wrote: > >> On Saturday, August 17th, 2024 at 12:26 AM, Stephen Berman >> stephen.berman@gmx.net wrote: >> >> > On Fri, 16 Aug 2024 12:10:48 +0000 Heime heimeborgia@protonmail.com w= rote: >> > >> > > On Saturday, August 17th, 2024 at 12:03 AM, Heime >> > > heimeborgia@protonmail.com wrote: >> > > >> > > > On Friday, August 16th, 2024 at 11:51 PM, Stephen Berman >> > > > stephen.berman@gmx.net wrote: >> > > > >> > > > > On Fri, 16 Aug 2024 10:59:09 +0000 Heime heimeborgia@protonmail= .com wrote: >> > > > > >> > > > > > On Friday, August 16th, 2024 at 10:20 PM, Heime >> > > > > > heimeborgia@protonmail.com wrote: >> > > > > > >> > > > > > > On Friday, August 16th, 2024 at 9:54 PM, Stephen Berman >> > > > > > > stephen.berman@gmx.net wrote: >> > > > > > > >> > > > > > > > On Fri, 16 Aug 2024 09:24:23 +0000 Heime >> > > > > > > > heimeborgia@protonmail.com wrote: >> > > > > > > > >> > > > > > > > > I want to display text starting from "(defun" up to the >> > > > > > > > > second blank >> > > > > > > > > line that is encountered. >> > > > > > > > > >> > > > > > > > > But with this code I get >> > > > > > > > > >> > > > > > > > > insert: Args out of range: #, 27= 06, 2804 >> > > > > > > > > >> > > > > > > > > (defun display-text () >> > > > > > > > > "Display the text between a line starting with '(defun'= and >> > > > > > > > > the second >> > > > > > > > > blank line." >> > > > > > > > > (interactive) >> > > > > > > > > (let ((output-buffer (get-buffer-create "Defun Sections= "))) >> > > > > > > > > (with-current-buffer output-buffer >> > > > > > > > > (erase-buffer)) ;; Clear previous contents >> > > > > > > > > (save-excursion >> > > > > > > > > (goto-char (point-min)) >> > > > > > > > > (while (re-search-forward "^(defun" nil t) >> > > > > > > > > (let ((start (match-beginning 0)) >> > > > > > > > > (blank-lines 0) >> > > > > > > > > end) >> > > > > > > > > ;; Move forward to find the second blank line >> > > > > > > > > (while (and (< blank-lines 2) >> > > > > > > > > (re-search-forward "^\\s-*$" nil t)) >> > > > > > > > > (setq blank-lines (1+ blank-lines))) >> > > > > > > > > (setq end (point)) >> > > > > > > > > ;; Ensure the range is valid before inserting >> > > > > > > > > (when (> end start) >> > > > > > > > > (with-current-buffer output-buffer >> > > > > > > > > (insert (buffer-substring-no-properties start end) "\n"= )))))) >> > > > > > > > > ;; Display the output buffer >> > > > > > > > > (display-buffer output-buffer))) >> > > > > > > > >> > > > > > > > You've set `start' and` end' in a different buffer than o= utput-buffer >> > > > > > > > but you're invoking buffer-substring-no-properties with t= hese >> > > > > > > > values in >> > > > > > > > output-buffer, which you've erased, so those values are n= ot in >> > > > > > > > the range >> > > > > > > > of possible values in output-buffer. Try let-binding the = result of >> > > > > > > > invoking buffer-substring-no-properties before the second >> > > > > > > > invocation of >> > > > > > > > with-current-buffer. >> > > > > > > > >> > > > > > > > Steve Berman >> > > > > > >> > > > > > I updated as suggested. Although I get the output, the search= stops on >> > > > > > the first >> > > > > > blank line rather than on the second blank line. >> > > > > >> > > > > Consider a buffer "test" with the following content (two blank = lines >> > > > > between the defuns): >> > > > > >> > > > > ;;;;;;;;;;;;; >> > > > > >> > > > > (defun f1 () >> > > > > (ignore)) >> > > > > >> > > > > (defun f2 () >> > > > > (ignore)) >> > > > > ;;;;;;;;;;;;; >> > > > > >> > > > > When you call `display-text' in "test", the first evaluation of= the >> > > > > sexp (re-search-forward "^\\s-*$" nil t) moves point to the fir= st blank >> > > > > line below the first defun. Where is point after the second eva= luation >> > > > > of that sexp? - Steve Berman >> > > > >> > > > It is still at the beginning of the first blank line. >> > > >> > > I do not understand why this happens. Because (point) after >> > > re-search-forward should give me the position at the beginning of t= he >> > > second blank line that is encountered. >> > >> > The sexp (re-search-forward "^\\s-*$" nil t) succeeds if it find a li= ne >> > containing only zero or more whitespace characters and moves point to >> > the end of the match. If point is on a blank line, the search succeed= s, >> > but since the beginning and end of the match coincide, point does not >> > move. If you want point to move, your code needs to accommodate this >> > case. - Steve Berman >> >> >> Have printed start and end just after (setq end (point)) >> >> (message "Start: %d, End: %d" start end) >> >> And the values for start and end are different. `start' holds the value of the beginning of the match for "^(defun", but your problem arises when searching for "^\\s-*$"; you'll see it if you change the message to this: (message "Start: %d, End: %d" (match-beginning 0) (match-end 0)) > When the first blank is reached, point moves to that blank, the next sea= rch > keeps point at the same place rather than moving to the next blank line. For the reason I explained above. Steve Berman