# HG changeset patch
# User mpm@selenic.com
# Date 1127523003 25200
# Node ID d4b25df77a9e9fd6d3a2861d48263b53f76e60c4
# Parent  8c094fb47b59234088c549a9bcf8deb9316c0d7b
Fix up some bugs for log and grep with empty repo



diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -74,6 +74,10 @@ def walkchangerevs(ui, repo, cwd, pats, 
 
     "iter", rev, None: in-order traversal of the revs earlier iterated
     over with "add" - use to display data'''
+
+    if repo.changelog.count() == 0:
+        return [], False
+
     cwd = repo.getcwd()
     if not pats and cwd:
         opts['include'] = [os.path.join(cwd, i) for i in opts['include']]
@@ -1055,6 +1059,7 @@ def grep(ui, repo, pattern, *pats, **opt
     skip = {}
     changeiter, getchange = walkchangerevs(ui, repo, repo.getcwd(), pats, opts)
     count = 0
+    incrementing = False
     for st, rev, fns in changeiter:
         if st == 'window':
             incrementing = rev