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| -rw-r--r-- | lisp/bandali-utils.el | 118 |
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diff --git a/lisp/bandali-utils.el b/lisp/bandali-utils.el new file mode 100644 index 0000000..7a2820d --- /dev/null +++ b/lisp/bandali-utils.el @@ -0,0 +1,118 @@ +;;; bandali-utils.el --- useful utilities -*- lexical-binding: t; -*- + +;; Copyright (C) 2020 Amin Bandali + +;; Author: Amin Bandali <bandali@gnu.org> +;; Keywords: lisp, tools + +;; This program is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with this program. If not, see <https://www.gnu.org/licenses/>. + +;;; Commentary: + +;; A small collection of useful utilities used through my init files. + +;;; Code: + +(defmacro b/setq-every (value &rest vars) + "Set all the variables from VARS to value VALUE." + (declare (indent defun) (debug t)) + `(progn ,@(mapcar (lambda (x) (list 'setq x value)) vars))) + +(defun b/start-process (program &rest args) + "Same as `start-process', but doesn't bother about name and buffer." + (let ((process-name (concat program "_process")) + (buffer-name (generate-new-buffer-name + (concat program "_output")))) + (apply #'start-process + process-name buffer-name program args))) + +(defun b/dired-start-process (program &optional args) + "Open current file with a PROGRAM." + ;; Shell command looks like this: "program [ARGS]... FILE" (ARGS can + ;; be nil, so remove it). + (declare-function dired-get-file-for-visit "dired") + (apply #'b/start-process + program + (remove nil (list args (dired-get-file-for-visit))))) + +(defun b/add-elisp-section () + (interactive) + (insert "\n") + (forward-line -1) + (insert "\n \n;;; ")) + +;; (defvar b/fill-column 47 +;; "My custom `fill-column'.") + +(defconst b/asterism "* * *") + +(defun b/insert-asterism () + "Insert a centred asterism." + (interactive) + (insert + (concat + "\n\n" + (make-string (floor (/ (- fill-column (length b/asterism)) 2)) + ?\s) + b/asterism + "\n\n"))) + +(defun b/no-mouse-autoselect-window () + "Conveniently disable `focus-follows-mouse'. +For disabling the behaviour for certain buffers and/or modes." + (make-local-variable 'mouse-autoselect-window) + (setq mouse-autoselect-window nil)) + +(defun b/kill-current-buffer () + "Kill the current buffer." + ;; also see https://redd.it/64xb3q + (interactive) + (kill-buffer (current-buffer))) + +(defun b/move-indentation-or-beginning-of-line (arg) + "Move to the indentation or to the beginning of line." + (interactive "^p") + ;; (if (bolp) + ;; (back-to-indentation) + ;; (move-beginning-of-line arg)) + (if (= (point) + (progn (back-to-indentation) + (point))) + (move-beginning-of-line arg))) + +(defun b/join-line-top () + "Like `join-line', but join next line to the current line." + (interactive) + (join-line 1)) + +(defun b/duplicate-line-or-region (&optional n) + "Duplicate the current line, or region (if active). +Make N (default: 1) copies of the current line or region." + (interactive "*p") + (let ((u-r-p (use-region-p)) ; if region is active + (n1 (or n 1))) + (save-excursion + (let ((text + (if u-r-p + (buffer-substring (region-beginning) (region-end)) + (prog1 (thing-at-point 'line) + (end-of-line) + (if (eobp) + (newline) + (forward-line 1)))))) + (dotimes (_ (abs n1)) + (insert text)))))) + +(provide 'bandali-utils) +;;; bandali-utils.el ends here |