fixed typo!

h-m-m

@@ -180,6 +180,7 @@ const ctrl_r                = "\022";
 const ctrl_f                = "\006";
 const ctrl_v                = "\026";
 const ctrl_h                = "\010";
+const ctrl_o                = "\017";
 
 const arr_down              = "\033\133\102";
 const arr_right             = "\033\133\103";
@@ -470,7 +471,6 @@ function load_file(&$mm)
 		$lines = file($mm['filename'], FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
 	else
 	{
-		unset($mm['filename']);
 		load_empty_map($mm);
 		return;
 	}
@@ -2528,9 +2528,13 @@ function load_empty_map(&$mm)
 		]
 	;
 
+	$title = basename( $mm['filename'] ?? 'root' );
+	if (substr($title,-4)=='.hmm')
+		$title = substr($title,0,-4);
+
 	$mm['nodes'][1] =
 		[
-			'title'=> basename( $mm['filename'] ?? 'root' )
+			'title'=> $title
 			,'is_leaf'=>true
 			,'children'=>[]
 			,'collapsed'=>false
@@ -3058,6 +3062,17 @@ function rank(&$mm, $add_positive, $add_negative)
 }
 
 
+// }}}
+// {{{ open link
+
+function open_link(&$mm)
+{
+	message($mm,'Opening the node with xdg-open...');
+	exec('xdg-open "'.$mm['nodes'][ $mm['active_node'] ]['title'].'" >/dev/null 2>&1 &', $output, $result);
+	display($mm);
+}
+
+
 // }}}
 // {{{ sort
 
@@ -3166,6 +3181,7 @@ function monitor_key_presses(&$mm)
 			case 'n':       next_search_result($mm); break;
 			case 'N':       previous_search_result($mm); break;
 
+			case ctrl_o:    open_link($mm); break;
 			case 'o':       insert_new_node($mm, insert_sibling); break;
 			case 'O':       insert_new_node($mm, insert_child); break;
 

readme.md

@@ -77,7 +77,7 @@ Search:
 * `n` - goes to the next search result
 * `N` - goes to the previous search result
 
-Save, export, and quit:
+Save, export, quit, etc.:
 
 * `s` - saves with the previous file name (or asks for one if there's none)
 * `S` - saves with a new file name
@@ -85,6 +85,7 @@ Save, export, and quit:
 * `X` - export as a text map into clipboard
 * `q` - quits (if the changes were already saved)
 * `Q` - quits, ignoring the changes
+* `Ctrl+o` - open the active node as a file or URL using xdg-open
 
 In the text editor: