+;;; 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\f\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
projects / ~bandali / configs / commitdiff