commands: fix shadowed repo module

mercurial/commands.py

@@ -6,7 +6,7 b''
 # of the GNU General Public License, incorporated herein by reference.
 
 from node import hex, nullid, nullrev, short
-from repo import RepoError
+from repo import RepoError, NoCapability
 from i18n import _
 import os, re, sys, urllib
 import hg, util, revlog, bundlerepo, extensions, copies
@@ -2045,7 +2045,7 b' def pull(ui, repo, source="default", **o'
     if revs:
         try:
             revs = [other.lookup(rev) for rev in revs]
-        except repo.NoCapability:
+        except NoCapability:
             error = _("Other repository doesn't support revision lookup, "
                       "so a rev cannot be specified.")
             raise util.Abort(error)

tests/test-pull-r

@@ -14,6 +14,9 b' cd ..'
 hg init copy
 cd copy
 
+echo '% pull a missing revision'
+hg pull -qr missing ../repo
+
 echo '% pull -r 0'
 hg pull -qr 0 ../repo
 hg log

tests/test-pull-r.out

@@ -15,6 +15,8 b' user: test'
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     add foo
 
+% pull a missing revision
+abort: unknown revision 'missing'!
 % pull -r 0
 changeset:   0:bbd179dfa0a7
 tag:         tip