Use enum for damage debug options

include/sway/debug.h

@@ -3,12 +3,16 @@
 #include <stdbool.h>
 
 struct sway_debug {
-	bool highlight_damage; // Highlight regions of the screen being damaged
 	bool noatomic;         // Ignore atomic layout updates
-	bool nodamage;         // Render the full output on each frame
 	bool render_tree;      // Render the tree overlay
 	bool txn_timings;      // Log verbose messages about transactions
 	bool txn_wait;         // Always wait for the timeout before applying
+
+	enum {
+		DAMAGE_DEFAULT,    // Default behaviour
+		DAMAGE_HIGHLIGHT,  // Highlight regions of the screen being damaged
+		DAMAGE_RERENDER,   // Render the full output when any damage occurs
+	} damage;
 };
 
 extern struct sway_debug debug;

sway/desktop/render.c

@@ -834,9 +834,9 @@ void output_render(struct sway_output *output, struct timespec *when,
 		goto renderer_end;
 	}
 
-	if (debug.highlight_damage) {
+	if (debug.damage == DAMAGE_HIGHLIGHT) {
 		wlr_renderer_clear(renderer, (float[]){1, 1, 0, 1});
-	} else if (debug.nodamage) {
+	} else if (debug.damage == DAMAGE_RERENDER) {
 		int width, height;
 		wlr_output_transformed_resolution(wlr_output, &width, &height);
 		pixman_region32_union_rect(damage, damage, 0, 0, width, height);
@@ -918,7 +918,7 @@ renderer_end:
 		wlr_render_texture(renderer, root_container.sway_root->debug_tree,
 			wlr_output->transform_matrix, 0, 40, 1);
 	}
-	if (debug.highlight_damage) {
+	if (debug.damage == DAMAGE_HIGHLIGHT) {
 		int width, height;
 		wlr_output_transformed_resolution(wlr_output, &width, &height);
 		pixman_region32_union_rect(damage, damage, 0, 0, width, height);

sway/desktop/transaction.c

@@ -345,9 +345,7 @@ static void set_instruction_ready(
 	}
 
 	instruction->container->instruction = NULL;
-	if (!txn_debug) {
-		transaction_progress_queue();
-	}
+	transaction_progress_queue();
 }
 
 void transaction_notify_view_ready_by_serial(struct sway_view *view,

sway/main.c

@@ -235,12 +235,12 @@ static void drop_permissions(bool keep_caps) {
 }
 
 void enable_debug_flag(const char *flag) {
-	if (strcmp(flag, "highlight-damage") == 0) {
-		debug.highlight_damage = true;
+	if (strcmp(flag, "damage=highlight") == 0) {
+		debug.damage = DAMAGE_HIGHLIGHT;
+	} else if (strcmp(flag, "damage=rerender") == 0) {
+		debug.damage = DAMAGE_RERENDER;
 	} else if (strcmp(flag, "noatomic") == 0) {
 		debug.noatomic = true;
-	} else if (strcmp(flag, "nodamage") == 0) {
-		debug.nodamage = true;
 	} else if (strcmp(flag, "render-tree") == 0) {
 		debug.render_tree = true;
 	} else if (strcmp(flag, "txn-wait") == 0) {