mq: fix for merge detection methods

Differential Revision: https://phab.mercurial-scm.org/D6548

hgext/mq.py

@@ -1162,18 +1162,17 b' class queue(object):'
             _("local changes found, qrefresh first")
             _("local changed subrepos found, qrefresh first")
 
-        cmdutil.checkunfinished(repo)
         s = repo.status()
         if not force:
-            if len(repo[None].parents()) > 1:
-                _("outstanding uncommitted merge") #i18 tool detection
-                raise error.Abort(_("outstanding uncommitted merge"+ excsuffix))
+            cmdutil.checkunfinished(repo)
             if s.modified or s.added or s.removed or s.deleted:
                 _("local changes found") # i18n tool detection
                 raise error.Abort(_("local changes found" + excsuffix))
             if checksubstate(repo):
                 _("local changed subrepos found") # i18n tool detection
                 raise error.Abort(_("local changed subrepos found" + excsuffix))
+        else:
+            cmdutil.checkunfinished(repo, skipmerge=True)
         return s
 
     _reserved = ('series', 'status', 'guards', '.', '..')

tests/test-mq-qnew.t

@@ -164,8 +164,7 b' plain headers'
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
   (no more unresolved files)
-  abort: outstanding uncommitted merge
-  (use 'hg commit' or 'hg merge --abort')
+  abort: cannot manage merge changesets
   $ rm -r sandbox
 
 hg headers
@@ -244,8 +243,7 b' hg headers'
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
   (no more unresolved files)
-  abort: outstanding uncommitted merge
-  (use 'hg commit' or 'hg merge --abort')
+  abort: cannot manage merge changesets
   $ rm -r sandbox
 
 Test saving last-message.txt