[PATCH] revset: fix wrong keyword() behaviour for strings with spaces

[Alexander Plavin]

# HG changeset patch
# User Alexander Plavin <alexander at plav.in>
# Date 1375735926 -14400
#      Tue Aug 06 00:52:06 2013 +0400
# Node ID ecb8e32e765eaf8e2df8d6535be6ca66275ca0df
# Parent  d07c92b5a8382e8182cf63dbf6463c32140e9d14
revset: fix wrong keyword() behaviour for strings with spaces

Some changesets can be wrongly reported as matched by this predicate
due to searching in a string joined with spaces and not individually.
A test case added, which fails without this fix.

diff -r d07c92b5a838 -r ecb8e32e765e mercurial/revset.py
--- a/mercurial/revset.py	Sun Jun 30 11:48:21 2013 +0400
+++ b/mercurial/revset.py	Tue Aug 06 00:52:06 2013 +0400
@@ -910,8 +910,8 @@
     l = []
     for r in subset:
         c = repo[r]
-        t = " ".join(c.files() + [c.user(), c.description()])
-        if kw in encoding.lower(t):
+        if util.any(kw in encoding.lower(t)
+                    for t in c.files() + [c.user(), c.description()]):
             l.append(r)
     return l
 
diff -r d07c92b5a838 -r ecb8e32e765e tests/test-revset.t
--- a/tests/test-revset.t	Sun Jun 30 11:48:21 2013 +0400
+++ b/tests/test-revset.t	Tue Aug 06 00:52:06 2013 +0400
@@ -328,6 +328,7 @@
   7
   $ log 'keyword(issue)'
   6
+  $ log 'keyword("test a")'
   $ log 'limit(head(), 1)'
   0
   $ log 'matching(6)'