templatefilters: rename commonprefix to commondir Two reasons: * It makes it clearer that it's not a generic common string prefix (e.g. commonprefix(["bar", "baz"]) is not "ba", but "") * If we ever want a filter for generic common string prefix, then the name is now available for that. "commondir" does not describe the prefix-ness, however. I'm happy to rename it "commondirprefix" or "commonprefixdir" if others prefer. Differential Revision: https://phab.mercurial-scm.org/D3731

--- a/mercurial/templatefilters.py	Wed Jun 13 10:24:44 2018 -0400
+++ b/mercurial/templatefilters.py	Wed Jun 13 14:28:39 2018 -0700
@@ -99,8 +99,8 @@
     """
     return os.path.basename(path)
 
-@templatefilter('commonprefix')
-def commonprefix(filelist):
+@templatefilter('commondir')
+def commondir(filelist):
     """List of text. Treats each list item as file name with /
     as path separator and returns the longest common directory
     prefix shared by all list items.