From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Heime Newsgroups: gmane.emacs.help Subject: Re: Matching labels with buttons Date: Mon, 15 Jul 2024 16:24:23 +0000 Message-ID: References: <87r0bug978.fsf@rub.de> <87msmig6lz.fsf@rub.de> <87ikx6g49y.fsf@rub.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5690"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Heime via Users list for the GNU Emacs text editor To: Stephen Berman Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jul 15 18:25:15 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 1sTOVm-00017T-8L for geh-help-gnu-emacs@m.gmane-mx.org; 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b=hreYej8l2ReiODsTrS8l6ORA4PLHFq2/Ui+O+mf4SYgE4YjiS+Q4LrjW60zaiAxFb qdi5BZuS3a8Ti2omPfqIXDRgK9fFFmOlUlpNspHWaDW1qPyhdxAkBQ0uvcqWfE5LuT ro46N2D/FuHVTToP3w4nngK4pCFRls7Cx3qOfUL7b2iojfxL3ZBqFrUxj6hx7Y/cOA XWePuPOW/o1QDmnyEqZlIwWAkWjplM6x9zDmwtYFKuVGpzzjBH6EtViaW2Wo9XyCzq vK5F+nnb8nD6r8/vnNkfNxrMIDTN8rkM3FzDrNYNzn7rt//eYibf+S5ieNnFVQtjZH YIT9k3GfLsV4w== In-Reply-To: <87ikx6g49y.fsf@rub.de> Feedback-ID: 57735886:user:proton X-Pm-Message-ID: 194f21d99945d418dc96bff78414fd4cb86162b6 Received-SPF: pass client-ip=185.70.40.141; envelope-from=heimeborgia@protonmail.com; helo=mail-40141.protonmail.ch 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 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:147223 Archived-At: On Tuesday, July 16th, 2024 at 1:42 AM, Stephen Berman wrote: > On Mon, 15 Jul 2024 12:58:05 +0000 Heime heimeborgia@protonmail.com wrote= : >=20 > > Sent with Proton Mail secure email. > >=20 > > On Tuesday, July 16th, 2024 at 12:52 AM, Stephen Berman > > stephen.berman@gmx.net wrote: > >=20 > > > On Mon, 15 Jul 2024 12:35:53 +0000 Heime heimeborgia@protonmail.com w= rote: > > >=20 > > > > On Monday, July 15th, 2024 at 11:56 PM, Stephen Berman > > > > stephen.berman@gmx.net wrote: > > > >=20 > > > > > On Mon, 15 Jul 2024 11:25:28 +0000 Heime heimeborgia@protonmail.c= om wrote: > > > > >=20 > > > > > > Sent with Proton Mail secure email. > > > > > >=20 > > > > > > On Monday, July 15th, 2024 at 11:17 PM, Heime > > > > > > heimeborgia@protonmail.com wrote: > > > > > >=20 > > > > > > > I want to match cases such as > > > > > > >=20 > > > > > > > Label [-] > > > > > > >=20 > > > > > > > Have constructed the following regexp, but it does not match = the above > > > > > > >=20 > > > > > > > "\\(.\\)\\(\\s-\\[\\-\\]\\s-\\)" > > > > > > >=20 > > > > > > > I aw using > > > > > > >=20 > > > > > > > (when (string-match "\\(.\\)\\(\\s-\\[\\-\\]\\s-\\)" text) > > > > > >=20 > > > > > > In the code I have > > > > > >=20 > > > > > > (if (string-match "\\(\\s-\\[\\-\\]\\s-\\)\\(.*\\)" label) ; [-= ] LB > > > > > >=20 > > > > > > (progn > > > > > > (setq bt (match-string 1 label)) > > > > > > (setq lb (match-string 2 label)) > > > > > > (setq result > > > > > > (concat bt (propertize lb 'face '(:foreground "red"))))) > > > > > >=20 > > > > > > (when (string-match "\\(.\\)\\(\\s-\\[\\-\\]\\s-*\\)" label) ; = LB [-] > > > > > >=20 > > > > > > (setq lb (match-string 1 label)) > > > > > > (setq bt (match-string 2 label)) > > > > > > (setq result > > > > > > (concat (propertize lb 'face '(:foreground "red")) bt))) > > > > > >=20 > > > > > > Doing some tests with > > > > > >=20 > > > > > > "OFF [-]" > > > > > >=20 > > > > > > keeps matching the first string-match > > > > >=20 > > > > > That's because your regexp isn't anchored, so string-match succee= ds if > > > > > it finds a match anywhere in the string passed to it. To avoid th= is, > > > > > start the regexp with "\\`", which anchors it to the start of the= string > > > > > being matched against; see (info "(elisp) Regexp Backslash"). > > > > >=20 > > > > > Steve Berman > > > >=20 > > > > I would like to have two regex expressions, one to match only " [-]= LABEL " and > > > > another to match only " LABEL [-] ". With any number of whitespace. > > > >=20 > > > > Can one use "^" ? Or is "\\`" preferred ? > > >=20 > > > If you are always matching against a string, e.g. just using > > > string-match, then IIUC "^" and "\\`" give the same results. If you a= re matching against test in a buffer, e.g. with re-search-forward, looking-= at etc., then they can differ: "^" matches the beginning the the line conta= ining the matched string, "\\\\\\\\`" the beginning of the string > > > itself, regardless of where in the line it is (at point-min the resul= ts > > > are the same). > > >=20 > > > > And can one use "[[:space:]]" rather > > > > than "\\s-" ? Which is preferred ? > > >=20 > > > IIUC these both give the same results. > > >=20 > > > Steve Berman > >=20 > > Would I introduce \\` before the first grouping > >=20 > > "\\`\\(\\s-\\[\\-\\]\\s-\\)\\(.*\\)" >=20 >=20 > Since "\\`" matches the empty string, I don't think it matters whether > it's inside or outside of the group. But since in this case it's > anchoring the entire regexp, it seems conceptually preferable to keep it > outside (in contrast, e.g., to the case where the regexp is a > disjunction and you only want to anchor one of the disjuncts). >=20 > > How would I print \\` in a docstring ? >=20 >=20 > You have to escape the "`": \\\\\\\\=3D` (not \\=3D\\`). >=20 > Steve Berman I also have to handle the case of " LABEL [-] " with a different regex, so = I can distinguish between " [-] LABEL " and " LABEL [-] ".