Parse XDG_CONFIG_DIRS for default configuration file.

doc/rofi.1

@@ -70,6 +70,7 @@ Markup support can be enabled, see CONFIGURATION options.
 There are currently three methods of setting configuration options (evaluated in order below):
 .IP \(bu 2
 System configuration file  (for example \fB\fC/etc/rofi.rasi\fR or old format \fB\fC/etc/rofi.conf\fR).
+It checks XDG\_CONFIG\_DIRS  and SYSCONFDIR passed at compile time.
 .IP \(bu 2
 Xresources: A method of storing key values in the Xserver. See
 here

doc/rofi.1.markdown

@@ -54,6 +54,7 @@ Markup support can be enabled, see CONFIGURATION options.
 There are currently three methods of setting configuration options (evaluated in order below):
 
  * System configuration file  (for example `/etc/rofi.rasi` or old format `/etc/rofi.conf`).
+   It checks XDG_CONFIG_DIRS  and SYSCONFDIR passed at compile time.
  * Xresources: A method of storing key values in the Xserver. See
    [here](https://en.wikipedia.org/wiki/X_resources) for more information.
  * Rasi theme file: The new *theme* format can be used to set configuration values.

source/rofi.c

@@ -289,7 +289,7 @@ static void print_main_application_options ( int is_term )
     print_help_msg ( "-show", "[mode]", "Show the mode 'mode' and exit. The mode has to be enabled.", NULL, is_term );
     print_help_msg ( "-no-lazy-grab", "", "Disable lazy grab that, when fail to grab keyboard, does not block but retry later.", NULL, is_term );
     print_help_msg ( "-no-plugins", "", "Disable loading of external plugins.", NULL, is_term );
-    print_help_msg ( "-plugin-path", "", "Directory used to search for rofi plugins.", NULL, is_term );
+    print_help_msg ( "-plugin-path", "", "Directory used to search for rofi plugins. *DEPRECATED*", NULL, is_term );
     print_help_msg ( "-dump-config", "", "Dump the current configuration in rasi format and exit.", NULL, is_term );
     print_help_msg ( "-upgrade-config", "", "Upgrade the old-style configuration fiel in the new rasi format and exit.", NULL, is_term );
     print_help_msg ( "-dump-theme", "", "Dump the current theme in rasi format and exit.", NULL, is_term );
@@ -868,15 +868,44 @@ int main ( int argc, char *argv[] )
     TICK_N ( "Setup abe" );
 
     if ( find_arg ( "-no-config" ) < 0 ) {
-        gchar *etc = g_build_filename ( SYSCONFDIR, "rofi.rasi", NULL );
+        // Load distro default settings
-        g_debug ( "Testing: %s", etc );
+        gboolean found_system = FALSE;
+        const char * const * dirs = g_get_system_config_dirs();
+        if ( dirs )
+        {
+            for ( unsigned int i =0;  !found_system &&  dirs[i]; i++ ) {
+                /** New format. */
+                gchar *etc = g_build_filename ( dirs[i], "rofi.rasi", NULL );
+                g_debug ( "Look for default config file: %s", etc );
                 if ( g_file_test ( etc, G_FILE_TEST_IS_REGULAR ) ) {
                     g_debug ( "Parsing: %s", etc );
                     rofi_theme_parse_file ( etc );
+                    found_system  = TRUE;
+                } else {
+                    /** Old format. */
+                    gchar *xetc = g_build_filename ( dirs[i], "rofi.conf", NULL );
+                    g_debug ( "Look for default config file: %s", xetc );
+                    if ( g_file_test ( xetc, G_FILE_TEST_IS_REGULAR ) ) {
+                        config_parse_xresource_options_file ( xetc );
+                        old_config_format = TRUE;
+                        found_system  = TRUE;
                     }
-        else {
+                    g_free ( xetc );
-            // Load distro default settings
+                }
+                g_free ( etc );
+            }
+        }
+        if ( ! found_system  ) {
+            /** New format. */
+            gchar *etc = g_build_filename ( SYSCONFDIR, "rofi.rasi", NULL );
+            g_debug ( "Look for default config file: %s", etc );
+            if ( g_file_test ( etc, G_FILE_TEST_IS_REGULAR ) ) {
+                g_debug ( "Look for default config file: %s", etc );
+                rofi_theme_parse_file ( etc );
+            } else {
+                /** Old format. */
                 gchar *xetc = g_build_filename ( SYSCONFDIR, "rofi.conf", NULL );
+                g_debug ( "Look for default config file: %s", xetc );
                 if ( g_file_test ( xetc, G_FILE_TEST_IS_REGULAR ) ) {
                     config_parse_xresource_options_file ( xetc );
                     old_config_format = TRUE;
@@ -884,6 +913,7 @@ int main ( int argc, char *argv[] )
                 g_free ( xetc );
             }
             g_free ( etc );
+        }
         // Load in config from X resources.
         config_parse_xresource_options ( xcb );
         if ( config_path_new && g_file_test ( config_path_new, G_FILE_TEST_IS_REGULAR ) ) {