largefiles: changed overridelog to work with graphlog

Log for largefiles was failing for graph log since it was overriding match
instead of matchandpats.

[Mads Kiilerich modified this patch to address his review comments and ended up
rewriting/removing most of it.]

hgext/largefiles/overrides.py

@@ -55,6 +55,22 b' def restorematchfn():'
     restore matchfn to reverse'''
     scmutil.match = getattr(scmutil.match, 'oldmatch')
 
+def installmatchandpatsfn(f):
+    oldmatchandpats = scmutil.matchandpats
+    setattr(f, 'oldmatchandpats', oldmatchandpats)
+    scmutil.matchandpats = f
+    return oldmatchandpats
+
+def restorematchandpatsfn():
+    '''restores scmutil.matchandpats to what it was before
+    installnormalfilesmatchandpatsfn was called.  no-op if scmutil.matchandpats
+    is its original function.
+
+    Note that n calls to installnormalfilesmatchandpatsfn will require n calls
+    to restore matchfn to reverse'''
+    scmutil.matchandpats = getattr(scmutil.matchandpats, 'oldmatchandpats',
+            scmutil.matchandpats)
+
 def addlargefiles(ui, repo, *pats, **opts):
     large = opts.pop('large', None)
     lfsize = lfutil.getminsize(
@@ -241,19 +257,30 b' def overridedirty(orig, repo, ignoreupda'
         repo._repo.lfstatus = False
 
 def overridelog(orig, ui, repo, *pats, **opts):
-    def overridematch(ctx, pats=[], opts={}, globbed=False,
+    def overridematchandpats(ctx, pats=[], opts={}, globbed=False,
             default='relpath'):
         """Matcher that merges root directory with .hglf, suitable for log.
         It is still possible to match .hglf directly.
         For any listed files run log on the standin too.
         matchfn tries both the given filename and with .hglf stripped.
         """
-        match = oldmatch(ctx, pats, opts, globbed, default)
-        m = copy.copy(match)
+        matchandpats = oldmatchandpats(ctx, pats, opts, globbed, default)
+        m, p = copy.copy(matchandpats)
+
+        pats = set(p)
+        # TODO: handling of patterns in both cases below
+        if m._cwd:
+            back = (m._cwd.count('/') + 1) * '../'
+            pats.update(back + lfutil.standin(m._cwd + '/' + f) for f in p)
+        else:
+            pats.update(lfutil.standin(f) for f in p)
+
         for i in range(0, len(m._files)):
             standin = lfutil.standin(m._files[i])
             if standin in repo[ctx.node()]:
                 m._files[i] = standin
+            pats.add(standin)
+
         m._fmap = set(m._files)
         m._always = False
         origmatchfn = m.matchfn
@@ -264,14 +291,16 b' def overridelog(orig, ui, repo, *pats, *'
             r = origmatchfn(f)
             return r
         m.matchfn = lfmatchfn
-        return m
-    oldmatch = installmatchfn(overridematch)
+
+        return m, pats
+
+    oldmatchandpats = installmatchandpatsfn(overridematchandpats)
     try:
         repo.lfstatus = True
         return orig(ui, repo, *pats, **opts)
     finally:
         repo.lfstatus = False
-        restorematchfn()
+        restorematchandpatsfn()
 
 def overrideverify(orig, ui, repo, *pats, **opts):
     large = opts.pop('large', False)

tests/test-largefiles.t

@@ -760,8 +760,8 b' Test graph log'
   $ hg log -qf sub2/large7
   7:daea875e9014
   $ hg log -Gqf sub2/large7
-  abort: cannot follow file not in parent revision: "sub2/large7"
-  [255]
+  @  7:daea875e9014
+  |
   $ cd ..
   $ hg clone a -r 3 c
   adding changesets
@@ -1143,6 +1143,8 b' Log on largefiles'
   $ hg log -G --template '{rev}:{node|short}  {desc|firstline}\n' sub
   @  9:598410d3eb9a  modify normal file largefile in repo d
   |
+  o  8:a381d2c8c80e  modify normal file and largefile in repo b
+  |
   o  6:4355d653f84f  edit files yet again
   |
   o  5:9d5af5072dbd  edit files again
@@ -1165,6 +1167,8 b' Log on largefiles'
   $ hg log -G --template '{rev}:{node|short}  {desc|firstline}\n' 'glob:sub/*'
   @  9:598410d3eb9a  modify normal file largefile in repo d
   |
+  o  8:a381d2c8c80e  modify normal file and largefile in repo b
+  |
   o  6:4355d653f84f  edit files yet again
   |
   o  5:9d5af5072dbd  edit files again
@@ -2203,6 +2207,12 b' Test actions on largefiles using relativ'
   summary:     anotherlarge
   
   $ hg log -G anotherlarge
+  @  changeset:   1:9627a577c5e9
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     anotherlarge
+  |
   $ echo more >> anotherlarge
   $ hg st .
   M anotherlarge