Possible fix for issue #90.

* Escape the argument passed to the script.
  * Escape '\"

source/script-dialog.c

@@ -99,12 +99,49 @@ static char **get_script_output ( char *command, unsigned int *length )
     return retv;
 }
 
+// There should be a glib version for this.
+// Fixing.
+char *escape_string ( const char *string )
+{
+    int new_length = 0;
+    int length     = strlen ( string );
+
+    // Characters to escape
+    const char echars[]   = "'\\ \"";
+    const char num_echars = sizeof ( echars ) / sizeof ( char );
+
+    // Count strings, Calculate new length.
+    for ( int i = 0; i < length; i++ ) {
+        for ( int j = 0; j < num_echars; j++ ) {
+            if ( echars[j] == string[i] ) {
+                new_length++;
+            }
+        }
+        new_length++;
+    }
+    // Create escaped string.
+    char *retv = g_malloc0 ( ( new_length + 1 ) * sizeof ( char ) );
+    new_length = 0;
+    for ( int i = 0; i < length; i++ ) {
+        for ( int j = 0; j < num_echars; j++ ) {
+            if ( echars[j] == string[i] ) {
+                retv[new_length++] = '\\';
+            }
+        }
+        retv[new_length++] = string[i];
+    }
+    return retv;
+}
+
 char **execute_executor ( ScriptOptions *options, const char *result, unsigned int *length )
 {
-    char **retv   = NULL;
-    char *command = g_strdup_printf ( "%s '%s'", options->script_path, result );
+    char **retv = NULL;
+
+    char *arg     = escape_string ( result );
+    char *command = g_strdup_printf ( "%s %s", options->script_path, arg );
     retv = get_script_output ( command, length );
     g_free ( command );
+    g_free ( arg );
     return retv;
 }