1 files changed, 10 insertions, 0 deletions
diff --git a/alias.js b/alias.js
index 9dc880e..2baca1f 100644
--- a/alias.js
+++ b/alias.js
@@ -113,6 +113,15 @@ let INFO =
 
 (function () {
 
+  // FIXME "vim[perator]" に対応してない
+  function removeOld (name) {
+    let cmd = commands.get(name);
+    if (!cmd)
+      return;
+    if (cmd.specs instanceof Array)
+      cmd.specs = cmd.specs.filter(function (it) it !== name);
+  }
+
   commands.addUserCommand(
     ['alias'],
     'Define the alias for a command.',
@@ -123,6 +132,7 @@ let INFO =
       if (!cmd)
         return liberator.echoerr('Not found command with: ' + oldName);
 
+      removeOld(newName);
       cmd.specs.push(newName);
       // XXX 必要でない気もする。実際コマンドの検索には要らない。
       Command.prototype.init.call(cmd, cmd.specs, cmd.description, cmd.action);