Merge pull request #1031 from avar/add-mu_home-env-variable

Add support for specifying --muhome via MU_HOME in the environment

lib/mu-util.c

@@ -199,9 +199,16 @@ gchar*
 mu_util_guess_mu_homedir (void)
 {
 	const char* home;
+	const gchar *hdir1;
 
-	/* g_get_home_dir use /etc/passwd, not $HOME; this is better,
-	 * as HOME may be wrong when using 'sudo' etc.*/
+	/* first, try MU_HOME */
+	hdir1 = g_getenv ("MU_HOME");
+
+	if (hdir1 && mu_util_check_dir (hdir1, TRUE, FALSE))
+		return g_strdup (hdir1);
+
+	/* then, g_get_home_dir use /etc/passwd, not $HOME; this is
+	 * better, as HOME may be wrong when using 'sudo' etc.*/
 	home = g_get_home_dir ();
 
 	if (!home) {

lib/mu-util.h

@@ -62,7 +62,8 @@ char* mu_util_guess_maildir (void)
 
 
 /**
- * guess the place of the mu homedir (typically, ~/.mu). Note, this
+ * guess the place of the mu homedir; first try $MU_HOME; if it is
+ * unset or non-existant, try ~/.mu. Note, the fallback ~/.mu
  * directory does not necessarily exist. mu_util_check_dir can be used
  * to check that
  *