match: make 'match.files()' return list object always...
match: make 'match.files()' return list object always
'exact' match objects are sometimes created with a non-list 'pattern'
argument:
- using 'set' in queue.refresh():hgext/mq.py
match = scmutil.matchfiles(repo, set(c[0] + c[1] + c[2] + inclsubs))
- using 'dict' in revert():mercurial/cmdutil.py (names = {})
m = scmutil.matchfiles(repo, names)
'exact' match objects return specified 'pattern' to callers of
'match.files()' as it is, so it is a non-list object.
but almost all implementations expect 'match.files()' to return a list
object, so this may causes problems: e.g. exception for "+" with
another list object.
this patch ensures that '_files' of 'exact' match objects is a list
object.
for non 'exact' match objects, parsing specified 'pattern' already
ensures that it it a list one.
