Mercurial > public > mercurial-scm > hg-stable

diff mercurial/extensions.py @ 14415:c238b12a1ed4

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extensions: raise when trying to find an extension that failed to load extensions that depend on other extensions (such as record) use this pattern to check if the dependant extension is available: try: mq = extensions.find('mq') except KeyError: return but since if an error occurs while loading an extension it leaves its entry in the _extensions map as None, we want to raise in that situation too. (rather than adding another check if the return value is None)
author Idan Kamara <idankk86@gmail.com>
date Mon, 23 May 2011 23:09:00 +0300
parents 1f46be4689ed
children cd31a1cc1521
line wrap: on
line diff
--- a/mercurial/extensions.py	Mon May 23 15:56:31 2011 +0200
+++ b/mercurial/extensions.py	Mon May 23 23:09:00 2011 +0300
@@ -21,13 +21,17 @@
 
 def find(name):
     '''return module with given extension name'''
+    mod = None
     try:
-        return _extensions[name]
+        mod =  _extensions[name]
     except KeyError:
         for k, v in _extensions.iteritems():
             if k.endswith('.' + name) or k.endswith('/' + name):
-                return v
+                mod = v
+                break
+    if not mod:
         raise KeyError(name)
+    return mod
 
 def loadpath(path, module_name):
     module_name = module_name.replace('.', '_')