Make pressing escape also un-narrow

(imported from commit 17d2cc3e8074af332f98588ad201ec342476d51f)

tools/jslint/check-all.js

@@ -10,7 +10,7 @@ var globals =
 
     // compose.js
     + ' show_compose hide_compose toggle_compose compose_button'
-    + ' compose_stream_name validate_message'
+    + ' composing_message compose_stream_name validate_message'
     + ' status_classes'
 
     // dom_access.js

zephyr/static/js/compose.js

@@ -42,6 +42,10 @@ function composing_huddle_message() {
     return $("#personal-message").is(":visible");
 }
 
+function composing_message() {
+    return composing_stream_message() || composing_huddle_message();
+}
+
 function compose_stream_name() {
     return $.trim($("#stream").val());
 }

zephyr/static/js/hotkey.js

@@ -74,8 +74,12 @@ function process_hotkey(code) {
             select_message(get_last_visible(), false);
         }
         return false;
-    case 27: // Esc: hide compose pane
+    case 27: // Esc: hide compose pane or un-narrow
+        if (composing_message()) {
             hide_compose();
+        } else {
+            show_all_messages();
+        }
         return process_hotkey;
     case 99: // 'c': compose
         compose_button();