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+;;; bandali-po.el --- bandali's po-mode setup       -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2021  Amin Bandali
+
+;; Author: Amin Bandali <bandali@gnu.org>
+;; Keywords: i18n gettext
+
+;; 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:
+
+;; My po-mode setup for editing PO translation files in GNU Emacs.
+
+;;; Code:
+
+(with-eval-after-load 'po-mode
+  ;; based on the `po-wrap' function from the GNUN manual:
+  ;; https://www.gnu.org/s/trans-coord/manual/gnun/html_node/Wrapping-Long-Lines.html
+  (defun b/po-wrap ()
+    "Run the current `po-mode' buffer through `msgcat' to wrap all
+lines."
+    (interactive)
+    (when (eq major-mode 'po-mode)
+      (let ((tmp-file (make-temp-file "po-wrap."))
+            (tmp-buffer (generate-new-buffer "*temp*")))
+        (unwind-protect
+            (progn
+              (write-region (point-min) (point-max) tmp-file nil 1)
+              (if (zerop
+                   (call-process "msgcat" nil tmp-buffer t
+                                 (shell-quote-argument tmp-file)))
+                  (let ((saved (point))
+                        (inhibit-read-only t))
+                    (delete-region (point-min) (point-max))
+                    (insert-buffer-substring tmp-buffer)
+                    (goto-char (min saved (point-max))))
+                (with-current-buffer tmp-buffer
+                  (error (buffer-string)))))
+          (kill-buffer tmp-buffer)
+          (delete-file tmp-file)))))
+
+  (add-hook 'po-mode-hook (lambda nil (run-with-timer 0.1 nil 'View-exit)))
+  (define-key po-mode-map (kbd "M-q") #'b/po-wrap))
+
+(autoload #'po-mode "po-mode"
+  "Major mode for editing PO translation files" t)
+(add-to-list 'auto-mode-alist '("\\.po\\'\\|\\.po\\." . po-mode))
+
+(provide 'bandali-po)
+;;; bandali-po.el ends here