1 files changed, 8 insertions, 0 deletions

diff --git a/sway/commands/for_window.c b/sway/commands/for_window.c
index 63cba099..ee9f4647 100644
--- a/sway/commands/for_window.c
+++ b/sway/commands/for_window.c
@@ -22,6 +22,14 @@ struct cmd_results *cmd_for_window(int argc, char **argv) {
         criteria->type = CT_COMMAND;
         criteria->cmdlist = join_args(argv + 1, argc - 1);
 
+        // Check if it already exists
+        if (criteria_already_exists(criteria)) {
+                sway_log(SWAY_DEBUG, "for_window already exists: '%s' -> '%s'",
+                                criteria->raw, criteria->cmdlist);
+                criteria_destroy(criteria);
+                return cmd_results_new(CMD_SUCCESS, NULL);
+        }
+
         list_add(config->criteria, criteria);
         sway_log(SWAY_DEBUG, "for_window: '%s' -> '%s' added", criteria->raw, criteria->cmdlist);