mq: omit ".hgsubstate" from qnew/qrefresh target list for consistent node hash

Before this patch, even if specified file patterns and -I/-X options
cause listing ".hgsubstate" up in the target list, qnew/qrefresh put
".hgsubstate" into the target list individually and forcibly.

This changes how many times ".hgsubstate" appear in the target list
according to run-time conditions, and causes inconsistent node hash,
even though revision content is same, because node hash calculation
uses the specified target list directly (without duplication check or
so).

This patch always omits ".hgsubstate" from qnew/qrefresh target list
for consistent node hash.

This omitting doesn't miss including ".hgsubstate" changes, because:

  - "localrepository.commit()" puts ".hgsubstate" into the target list
    for "commitctx()" forcibly if needed

  - "mq.putsubstate2changes()" puts ".hgsubstate" into the target list
    for "patch.diff()" if it is not yet listed up

hgext/mq.py

@@ -1035,7 +1035,6 b' class queue(object):'
             self.checkpatchname(patchfn)
         inclsubs = checksubstate(repo)
         if inclsubs:
-            inclsubs.append('.hgsubstate')
             substatestate = repo.dirstate['.hgsubstate']
         if opts.get('include') or opts.get('exclude') or pats:
             match = scmutil.match(repo[None], pats, opts)
@@ -1045,14 +1044,14 b' class queue(object):'
                     raise util.Abort('%s: %s' % (f, msg))
             match.bad = badfn
             changes = repo.status(match=match)
-            m, a, r, d = changes[:4]
         else:
             changes = self.checklocalchanges(repo, force=True)
-            m, a, r, d = changes
-        match = scmutil.matchfiles(repo, m + a + r + inclsubs)
+        commitfiles = list(inclsubs)
+        for files in changes[:3]:
+            commitfiles.extend([f for f in files if f != '.hgsubstate'])
+        match = scmutil.matchfiles(repo, commitfiles)
         if len(repo[None].parents()) > 1:
             raise util.Abort(_('cannot manage merge changesets'))
-        commitfiles = m + a + r
         self.checktoppatch(repo)
         insert = self.fullseriesend()
         wlock = repo.wlock()
@@ -1492,7 +1491,6 b' class queue(object):'
 
             inclsubs = checksubstate(repo, hex(patchparent))
             if inclsubs:
-                inclsubs.append('.hgsubstate')
                 substatestate = repo.dirstate['.hgsubstate']
 
             ph = patchheader(self.join(patchfn), self.plainmode)
@@ -1579,7 +1577,7 b' class queue(object):'
 
             files = set(inclsubs)
             for x in refreshchanges:
-                files.update(x)
+                files.update([f for f in x if f != '.hgsubstate'])
             match = scmutil.matchfiles(repo, files)
 
             bmlist = repo[top].bookmarks()

tests/test-mq-subrepo.t

@@ -407,12 +407,12 b" both into 'revision' and 'patch file und"
   $ cat .hgsubstate
   b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub
   $ hg diff -c tip
-  diff -r f499373e340c -r b20ffac88564 .hgsub
+  diff -r f499373e340c -r f69e96d86e75 .hgsub
   --- /dev/null
   +++ b/.hgsub
   @@ -0,0 +1,1 @@
   +sub = sub
-  diff -r f499373e340c -r b20ffac88564 .hgsubstate
+  diff -r f499373e340c -r f69e96d86e75 .hgsubstate
   --- /dev/null
   +++ b/.hgsubstate
   @@ -0,0 +1,1 @@
@@ -423,16 +423,34 b" both into 'revision' and 'patch file und"
   # User test
   # Date 0 0
   
-  diff -r f499373e340c -r b20ffac88564 .hgsub
+  diff -r f499373e340c -r f69e96d86e75 .hgsub
   --- /dev/null
   +++ b/.hgsub
   @@ -0,0 +1,1 @@
   +sub = sub
-  diff -r f499373e340c -r b20ffac88564 .hgsubstate
+  diff -r f499373e340c -r f69e96d86e75 .hgsubstate
   --- /dev/null
   +++ b/.hgsubstate
   @@ -0,0 +1,1 @@
   +b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub
+  $ hg parents --template '{node}\n'
+  f69e96d86e75a6d4fd88285dc9697acb23951041
+
+check also whether qnew not including ".hgsubstate" explicitly causes
+as same result (in node hash) as one including it.
+
+  $ hg qpop -a -q
+  patch queue now empty
+  $ hg qdelete import-at-qnew
+  $ echo 'sub = sub' > .hgsub
+  $ hg add .hgsub
+  $ rm -f .hgsubstate
+  $ hg qnew -u test -d '0 0' import-at-qnew
+  $ hg parents --template '{node}\n'
+  f69e96d86e75a6d4fd88285dc9697acb23951041
+
+check whether qrefresh imports updated .hgsubstate correctly
+
   $ hg qpop
   popping import-at-qnew
   patch queue now empty
@@ -537,6 +555,31 b" both into 'revision' and 'patch file und"
   -b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub
   +88ac1bef5ed43b689d1d200b59886b675dec474b sub
 
+check whether qrefresh not including ".hgsubstate" explicitly causes
+as same result (in node hash) as one including it.
+
+  $ hg update -C -q 0
+  $ hg qpop -a -q
+  patch queue now empty
+  $ hg qnew -u test -d '0 0' add-hgsub-at-qrefresh
+  $ echo 'sub = sub' > .hgsub
+  $ echo > .hgsubstate
+  $ hg add .hgsub .hgsubstate
+  $ hg qrefresh -u test -d '0 0'
+  $ hg parents --template '{node}\n'
+  7c48c35501aae6770ed9c2517014628615821a8e
+
+  $ hg qpop -a -q
+  patch queue now empty
+  $ hg qdelete add-hgsub-at-qrefresh
+  $ hg qnew -u test -d '0 0' add-hgsub-at-qrefresh
+  $ echo 'sub = sub' > .hgsub
+  $ hg add .hgsub
+  $ rm -f .hgsubstate
+  $ hg qrefresh -u test -d '0 0'
+  $ hg parents --template '{node}\n'
+  7c48c35501aae6770ed9c2517014628615821a8e
+
   $ cd ..
 
   $ cd ..