match: allow passing a context object to match core

mercurial/context.py

@@ -212,7 +212,8 b' class changectx(object):'
     def match(self, pats=[], include=None, exclude=None, default='glob'):
         r = self._repo
         return matchmod.match(r.root, r.getcwd(), pats,
-                              include, exclude, default, auditor=r.auditor)
+                              include, exclude, default,
+                              auditor=r.auditor, ctx=self)
 
     def diff(self, ctx2=None, match=None, **opts):
         """Returns a diff generator for the given contexts and matcher"""

mercurial/match.py

@@ -11,7 +11,7 b' from i18n import _'
 
 class match(object):
     def __init__(self, root, cwd, patterns, include=[], exclude=[],
-                 default='glob', exact=False, auditor=None):
+                 default='glob', exact=False, auditor=None, ctx=None):
         """build an object to match a set of file patterns
 
         arguments:
@@ -37,6 +37,7 b' class match(object):'
         self._cwd = cwd
         self._files = []
         self._anypats = bool(include or exclude)
+        self._ctx = ctx
 
         if include:
             pats = _normalize(include, 'glob', root, cwd, auditor)