From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.devel Subject: History completion Date: Wed, 08 Dec 2021 20:54:40 +0200 Organization: LINKOV.NET Message-ID: <86mtlbvuq2.fsf@mail.linkov.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20402"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (x86_64-pc-linux-gnu) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Dec 08 20:32:04 2021 Return-path: Envelope-to: ged-emacs-devel@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 1mv2fc-0005Bp-Dh for ged-emacs-devel@m.gmane-mx.org; Wed, 08 Dec 2021 20:32:04 +0100 Original-Received: from localhost ([::1]:38572 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mv2fb-0004de-Ck for ged-emacs-devel@m.gmane-mx.org; Wed, 08 Dec 2021 14:32:03 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:37932) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mv2d7-0002uF-JD for emacs-devel@gnu.org; Wed, 08 Dec 2021 14:29:29 -0500 Original-Received: from relay6-d.mail.gandi.net ([217.70.183.198]:55261) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mv2d5-0003WL-Ix for emacs-devel@gnu.org; Wed, 08 Dec 2021 14:29:29 -0500 Original-Received: (Authenticated sender: juri@linkov.net) by relay6-d.mail.gandi.net (Postfix) with ESMTPSA id C257EC0002 for ; Wed, 8 Dec 2021 19:29:22 +0000 (UTC) Received-SPF: pass client-ip=217.70.183.198; envelope-from=juri@linkov.net; helo=relay6-d.mail.gandi.net X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:281380 Archived-At: Wouldn't it be nice to allow completion on previous input in the minibuffer. There are two unbound commands ‘previous-complete-history-element’ and ‘next-complete-history-element’ but their completion is limited only to the beginnings of history items. So tried to set the minibuffer completion table to the history list: #+begin_src emacs-lisp (defun minibuffer-setup-history-completions () (unless (or minibuffer-completion-table minibuffer-completion-predicate) (setq-local minibuffer-completion-table (symbol-value minibuffer-history-variable)))) (add-hook 'minibuffer-setup-hook 'minibuffer-setup-history-completions) #+end_src It works nicely with ‘icomplete-mode’ and ‘fido-vertical-mode’ by automatically displaying completions from the history depending on input in the minibuffer. But this also has drawbacks: while typing a completely new command that doesn't exist in the history, it permanently says at the end of the minibuffer: [No matches] So instead of this, tried to show history completions only after typing a special key. TAB can't be reused because in some minibuffers such as ‘M-!’ (shell-command), TAB completes the command/file names. There is ‘C-tab’ bound to file-cache-minibuffer-complete. When file-cache is not used, then ‘C-tab’ could be rebound to a command that completes on the minibuffer history: #+begin_src emacs-lisp ;; Adapted from ‘minibuffer-complete’: (defun minibuffer-complete-history () (interactive) (completion-in-region (minibuffer--completion-prompt-end) (point-max) (symbol-value minibuffer-history-variable) nil)) (define-key minibuffer-local-map [C-tab] 'minibuffer-complete-history) #+end_src