largefiles: don't prefix standin patterns with '.hglf' when logging

When logging '.hglf/foo', the pattern list was being transformed from
['.hglf/foo'] into ['.hglf/foo', '.hglf/.hglf/foo'].  Aside from the
pathological case of somebody getting a directory named '.hglf' created inside
the standing directory, the old code shouldn't have had any bad effects.

(amended by mpm to sort patterns for test stability and not upset check-code)

hgext/largefiles/overrides.py

@@ -319,11 +319,21 b' def overridelog(orig, ui, repo, *pats, *'
             back = (m._cwd.count('/') + 1) * '../'
 
             def tostandin(f):
+                # The file may already be a standin, so trucate the back
+                # escaping and test before mangling it.  This avoids turning
+                # 'glob:../.hglf/foo*' into 'glob:../.hglf/../.hglf/foo*'.
+                if f.startswith(back) and lfutil.splitstandin(f[len(back):]):
+                    return f
+
                 return back + lfutil.standin(m._cwd + '/' + f)
 
             pats.update(fixpats(f, tostandin) for f in p)
         else:
-            pats.update(fixpats(f) for f in p)
+            def tostandin(f):
+                if lfutil.splitstandin(f):
+                    return f
+                return lfutil.standin(f)
+            pats.update(fixpats(f, tostandin) for f in p)
 
         for i in range(0, len(m._files)):
             # Don't add '.hglf' to m.files, since that is already covered by '.'
@@ -351,6 +361,7 b' def overridelog(orig, ui, repo, *pats, *'
             return r
         m.matchfn = lfmatchfn
 
+        ui.debug('updated patterns: %s\n' % sorted(pats))
         return m, pats
 
     # For hg log --patch, the match object is used in two different senses:

tests/test-largefiles-misc.t

@@ -466,14 +466,22 b' Test actions on largefiles using relativ'
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     anotherlarge
   
-  $ hg log -G glob:another*
-  @  changeset:   1:9627a577c5e9
-  |  tag:         tip
-  |  user:        test
-  |  date:        Thu Jan 01 00:00:00 1970 +0000
-  |  summary:     anotherlarge
+  $ hg --debug log -T '{rev}: {desc}\n' -G glob:another*
+  updated patterns: ['glob:../.hglf/sub/another*', 'glob:another*']
+  @  1: anotherlarge
   |
 
+#if no-msys
+  $ hg --debug log -T '{rev}: {desc}\n' 'glob:../.hglf/sub/another*' # no-msys
+  updated patterns: ['glob:../.hglf/sub/another*']
+  1: anotherlarge
+
+  $ hg --debug log -G -T '{rev}: {desc}\n' 'glob:../.hglf/sub/another*' # no-msys
+  updated patterns: ['glob:../.hglf/sub/another*']
+  @  1: anotherlarge
+  |
+#endif
+
   $ echo more >> anotherlarge
   $ hg st .
   M anotherlarge

tests/test-log.t

@@ -46,12 +46,9 b' changeset graph'
   $ hg ci -me -d '5 0'
 
 Make sure largefiles doesn't interfere with logging a regular file
-  $ hg log a --config extensions.largefiles=
-  changeset:   0:9161b9aeaf16
-  user:        test
-  date:        Thu Jan 01 00:00:01 1970 +0000
-  summary:     a
-  
+  $ hg --debug log a -T '{rev}: {desc}\n' --config extensions.largefiles=
+  updated patterns: ['.hglf/a', 'a']
+  0: a
   $ hg log a
   changeset:   0:9161b9aeaf16
   user:        test
@@ -69,17 +66,11 b" Make sure largefiles doesn't interfere w"
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     a
   
-  $ hg log glob:a* --config extensions.largefiles=
-  changeset:   3:2ca5ba701980
-  user:        test
-  date:        Thu Jan 01 00:00:04 1970 +0000
-  summary:     d
-  
-  changeset:   0:9161b9aeaf16
-  user:        test
-  date:        Thu Jan 01 00:00:01 1970 +0000
-  summary:     a
-  
+  $ hg --debug log glob:a* -T '{rev}: {desc}\n' --config extensions.largefiles=
+  updated patterns: ['glob:.hglf/a*', 'glob:a*']
+  3: d
+  0: a
+
 log on directory
 
   $ hg log dir