Merge pull request #1658 from paulfertser/use-editor-env-variable

Use EDITOR environment variable

src/config/preferences.c

@@ -2277,8 +2277,10 @@ _get_default_string(preference_t pref)
         return "xdg-open";
     case PREF_URL_OPEN_CMD:
         return "xdg-open %u";
-    case PREF_COMPOSE_EDITOR:
-        return "vim";
+    case PREF_COMPOSE_EDITOR: {
+        gchar* editor = getenv("EDITOR");
+        return editor ? editor : "vim";
+    }
     case PREF_URL_SAVE_CMD:
         return NULL; // Default to built-in method.
     default: