cmd_output: Use list_seq_find() to find matching config

include/config.h

@@ -98,6 +98,7 @@ bool read_config(FILE *file, bool is_active);
  * Does variable replacement for a string based on the config's currently loaded variables.
  */
 char *do_var_replacement(char *str);
+int output_name_cmp(const void *item, const void *data);;
 /** Sets up a WLC output handle based on a given output_config.
  */
 void apply_output_config(struct output_config *oc, swayc_t *output);

sway/commands.c

@@ -804,14 +804,12 @@ static struct cmd_results *cmd_output(int argc, char **argv) {
 		}
 	}
 
-	for (i = 0; i < config->output_configs->length; ++i) {
-		struct output_config *oc = config->output_configs->items[i];
-		if (strcmp(oc->name, output->name) == 0) {
+	i = list_seq_find(config->output_configs, output_name_cmp, name);
+	if (i >= 0) {
 		// replace existing config
+		struct output_config *oc = config->output_configs->items[i];
 		list_del(config->output_configs, i);
 		free_output_config(oc);
-			break;
-		}
 	}
 	list_add(config->output_configs, output);
 

sway/config.c

@@ -261,6 +261,14 @@ bool read_config(FILE *file, bool is_active) {
 	return success;
 }
 
+int output_name_cmp(const void *item, const void *data)
+{
+	const struct output_config *output = item;
+	const char *name = data;
+
+	return strcmp(output->name, name);
+}
+
 void apply_output_config(struct output_config *oc, swayc_t *output) {
 	if (oc && oc->width > 0 && oc->height > 0) {
 		output->width = oc->width;