From c04106492dbb239a85042df58198fedad213b3be Mon Sep 17 00:00:00 2001
From: Steven Walter <stevenrwalter@gmail.com>
Date: Tue, 8 Jul 2008 21:21:15 -0400
Subject: [PATCH] Only allow one plugin to override a given command

---
 yap/yap.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/yap/yap.py b/yap/yap.py
index 3e25095..756789b 100644
--- a/yap/yap.py
+++ b/yap/yap.py
@@ -26,6 +26,7 @@ class YapError(Exception):
 class Yap(object):
     def __init__(self):
         self.plugins = set()
+        self.overrides = []
         plugindir = os.path.expanduser("~/.yap/plugins")
         for p in glob.glob(os.path.join(plugindir, "*.py")):
             glbls = {}
@@ -38,9 +39,16 @@ class Yap(object):
                 if cls is YapPlugin:
                     continue
                 x = cls(self)
-                # XXX: check for override overlap
                 self.plugins.add(x)
 
+                for func in dir(x):
+                    if not func.startswith('cmd_'):
+                        continue
+                    if func in self.overrides:
+                        print >>sys.stderr, "Plugin %s overrides already overridden function %s.  Disabling" % (p, func)
+                        self.plugins.remove(x)
+                        break
+
     def _add_new_file(self, file):
         repo = get_output('git rev-parse --git-dir')[0]
         dir = os.path.join(repo, 'yap')
-- 
2.11.4.GIT