po-mode: Add option to keep .mo when validating

* gettext-tools/misc/po-mode.el (po-keep-mo-file): New user option.
(po-validate): Respect po-keep-mo-file.  Fix comment indentation.

2 files changed, 20 insertions, 5 deletions

diff --git a/gettext-tools/misc/ChangeLog b/gettext-tools/misc/ChangeLog
index f288e9594..27dbce687 100644
--- a/gettext-tools/misc/ChangeLog
+++ b/gettext-tools/misc/ChangeLog
@@ -1,3 +1,8 @@
+2015-04-24  Manuel Uberti  <manuel@boccaperta.com>  (tiny change)
+
+	* po-mode.el (po-keep-mo-file): New user option.
+	(po-validate): Respect po-keep-mo-file.  Fix comment indentation.
+
 2015-01-21  Peter Eisentraut  <peter@eisentraut.org>  (tiny change)
 
 	* po-mode.el (po-font-lock-keywords): Support all possible length
diff --git a/gettext-tools/misc/po-mode.el b/gettext-tools/misc/po-mode.el
index 1afba635f..8a1bc0ccb 100644
--- a/gettext-tools/misc/po-mode.el
+++ b/gettext-tools/misc/po-mode.el
@@ -130,6 +130,11 @@ Value is nil, t, or ask."
   :type 'boolean
   :group 'po)
 
+(defcustom po-keep-mo-file nil
+  "*Set whether MO file should be kept or discarded after validation."
+  :type 'boolean
+  :group 'po)
+
 (defcustom po-auto-update-file-header t
   "*Automatically revise headers.  Value is nil, t, or ask."
   :type '(choice (const nil)
@@ -3345,20 +3350,25 @@ Leave point after marked string."
 (defun po-validate ()
   "Use 'msgfmt' for validating the current PO file contents."
   (interactive)
-  ; The 'compile' subsystem is autoloaded through a call to (compile ...).
-  ; We need to initialize it outside of any binding. Without this statement,
-  ; all defcustoms and defvars of compile.el would be undone when the let*
-  ; terminates.
+  ;; The 'compile' subsystem is autoloaded through a call to (compile ...).
+  ;; We need to initialize it outside of any binding. Without this statement,
+  ;; all defcustoms and defvars of compile.el would be undone when the let*
+  ;; terminates.
   (require 'compile)
   (let* ((dev-null
           (cond ((boundp 'null-device) null-device) ; since Emacs 20.3
                 ((memq system-type '(windows-nt windows-95)) "NUL")
                 (t "/dev/null")))
+         (output
+          (if po-keep-mo-file
+              (concat (file-name-sans-extension buffer-file-name) ".mo")
+            dev-null))
          (compilation-buffer-name-function
           (function (lambda (mode-name)
                       (concat "*" mode-name " validation*"))))
          (compile-command (concat po-msgfmt-program
-                                  " --statistics -c -v -o " dev-null " "
+                                  " --statistics -c -v -o "
+                                  (shell-quote-argument output) " "
                                   (shell-quote-argument buffer-file-name))))
     (po-msgfmt-version-check)
     (compile compile-command)))