From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.bugs Subject: bug#57848: 29.0.50; Problems with private tab-line-tab-name-function Date: Sun, 30 Oct 2022 13:02:50 +0100 Message-ID: <87k04hldsl.fsf@web.de> References: <8735cs53vn.fsf@web.de> <868rkxretr.fsf@mail.linkov.net> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="38809"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Alexandros Prekates , Robert Pluim , 57848@debbugs.gnu.org To: Juri Linkov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Oct 30 13:04:33 2022 Return-path: Envelope-to: geb-bug-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 1op73J-0009uG-4Q for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sun, 30 Oct 2022 13:02:52 +0100 In-Reply-To: <868rkxretr.fsf@mail.linkov.net> (Juri Linkov's message of "Sun, 30 Oct 2022 09:24:00 +0200") X-Provags-ID: V03:K1:VXrd83VE4Op6WuOYGQM33prfXMK1sC0CupgqasHsOKcWBprPbS9 y3VYaojjILV4Y9YSxBTcVxvFXksPsc9CrKOV+ufvd7KRKveUKBGTh55Wmk443wNTS3zwxMG ufRYjN8mCxNhuwBShGmWYHWA63W/tLuoM6AS2Qp6bsMHYuDb4+G2uAVsyWrLMYwS1YwFEDB vsEAWkf/i08dETLKiYkMQ== UI-OutboundReport: notjunk:1;M01:P0:AX5o7b+hPJg=;Vw/r9rFdkwfg8be7185oVHd9N9P /Xk7lUk+aU+UR7TjBoutlL6USN3TAb6YdkXDqPFG3diat7UxizWWl6RE3yTQhHhvsysj3QilR +/GWPK+MnTtiWt09PYlz1CdCyXkHVv1vbBsEByMy6YWDFxBS/RkeO+9uWvRr1tmpR/2ix8HsD DwxFLExzfXfOUpf5fVSQ3AcV6uEEEQVklxpjee4QTkJIv+B2pOkXV45wmN9fPFcXeGtAckLH1 ImIS9GkR+IG7W3aS9Hix+CfHVt+y/hivIjckSbyLtMqVRFqOBG1mSeut26m3QL+XLbWoAnpnd Nee7ZNSNh1BZALWzxXmfuDaekbeRX0hqToGQfiHm3rfvtIyozrtY5KAXiQu45P7hTyrX8glDC 5hkbNmJJsGWLqCKb7gAMPtqR4Hoh3QpiR2Q2lnKcNRaeijHaBv3mfygkZQZtbJvBrcbrlHRTQ hMm8oWVSmRrQcpTvAQpfrjx0I9fDN9z9vYI2KZW9JGGH5dbzm4+KkyGHsr0vVa7XnfmTFvLzR zRU7Pv82VL2wR1QTbEu7oweT7bmd0uB6gAsgb/N8l0eBXhbK0c56/DK9HJ79HURiENWSbIXOO mpsRtkR3a/jjO32r1cGFblRML/klpu4KopGsosAAW5t3ccNjH8wiBtCxTGx46/2vHL8SPMDBr 2O1JjWEddJb4xc8SGdqBb++oIq4guVeSjLPj4hDbNoSwuJqu3uxFtwnxYf5wOio1L8reP13DO 4TFROym+bzS9/7fMnhwflqsWBo+wsmu4UNzno6mf+DxJvVqVImwYkvIBREjlC4zy6DZJfSCI X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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" Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:246613 Archived-At: Juri Linkov writes: > > #+begin_src emacs-lisp > > (setq-local tab-line-tab-name-function > > (lambda (_b &optional _bs) "%b")) > > #+end_src > All mode-line format sequences are valid, but only in the context > of the right buffer. So you can use such tab-name function: > > #+begin_src emacs-lisp > (setq tab-line-tab-name-function > (lambda (b &optional _bs) > (format-mode-line "%b" 'tab-line-tab nil b))) > #+end_src I didn't want to ask about `format-mode-line': my example (above) returns a plain "%b" string - nonetheless a buffer name is being printed as tab name. Mode-line format specifiers seem to be handled without `format-mode-line'. My question is what the semantics of the return value of `tab-line-tab-name-function' are. Or is the above behavior a bug? > A user-defined cache key function is a good idea. > Please send an example of such function for Info, > so I could test the implementation. I guess something like (lambda (b) (buffer-local-value 'mode-line-buffer-identification b)) should do it - a tab's name needs to be changed when the buffer local binding of `mode-line-buffer-identification' has been modified. Thanks so far, Michael.