[PATCH 6 of 8] mq: upgrade non-plain patches to HG format when setting parent in patchheader

[Mads Kiilerich]

# HG changeset patch
# User Mads Kiilerich <madski at unity3d.com>
# Date 1411225617 -7200
#      Sat Sep 20 17:06:57 2014 +0200
# Node ID fd737e3bd2f55ef70f7c82914da1d1fb001c9936
# Parent  39cc9d328c6e61f631ae4f96b5bb0702f3145d39
mq: upgrade non-plain patches to HG format when setting parent in patchheader

Parent will now always be updated or added when qrefreshing HG patches. Plain
patches will not be changed, but patches that neither are plain nor HG will be
upgraded to HG patches on first refresh.

diff --git a/hgext/mq.py b/hgext/mq.py
--- a/hgext/mq.py
+++ b/hgext/mq.py
@@ -241,7 +241,9 @@ class patchheader(object):
                 patchheaderat = self.comments.index('# HG changeset patch')
                 self.comments.insert(patchheaderat + 1, '# Parent  ' + parent)
             except ValueError:
-                pass
+                if not self.plainmode:
+                    tmp = ['# HG changeset patch', '# Parent  ' + parent]
+                    self.comments = tmp + self.comments
         self.parent = parent
 
     def setmessage(self, message):
diff --git a/tests/test-mq-eol.t b/tests/test-mq-eol.t
--- a/tests/test-mq-eol.t
+++ b/tests/test-mq-eol.t
@@ -84,6 +84,8 @@ force LF
   now at: eol.diff
   $ hg qrefresh
   $ python ../cateol.py .hg/patches/eol.diff
+  # HG changeset patch<LF>
+  # Parent  0d0bf99a8b7a3842c6f8ef09e34f69156c4bd9d0<LF>
   test message<LF>
   <LF>
   diff -r 0d0bf99a8b7a a<LF>
diff --git a/tests/test-mq-qpush-fail.t b/tests/test-mq-qpush-fail.t
--- a/tests/test-mq-qpush-fail.t
+++ b/tests/test-mq-qpush-fail.t
@@ -23,7 +23,7 @@ test qpush on empty series
   $ echo bar > bar
   $ hg add bar
   $ hg qrefresh -m 'patch 2'
-  $ hg qnew --config 'mq.plain=true' bad-patch
+  $ hg qnew --config 'mq.plain=true' -U bad-patch
   $ echo >> foo
   $ hg qrefresh
   $ hg qpop -a