# HG changeset patch
# User Alexis S. L. Carvalho <alexis@cecm.usp.br>
# Date 1175930875 10800
# Node ID 6e4334be0aaae0eed94ae589ef4dfb3a2281787a
# Parent  bc6f5a1d8b7bf163520daed1526ef94a7676bc30
Try to find diffstat in PATH before calling it

At least on Solaris, /bin/sh will print a "command not found" message
even if we redirect stderr.

diff --git a/mercurial/patch.py b/mercurial/patch.py
--- a/mercurial/patch.py
+++ b/mercurial/patch.py
@@ -663,6 +663,8 @@ def export(repo, revs, template='hg-%h.p
         single(repo.lookup(rev), seqno+1, fp)
 
 def diffstat(patchlines):
+    if not util.find_in_path('diffstat', os.environ.get('PATH', '')):
+        return
     fd, name = tempfile.mkstemp(prefix="hg-patchbomb-", suffix=".txt")
     try:
         p = popen2.Popen3('diffstat -p1 -w79 2>/dev/null > ' + name)