doc/hgrc.5.txt
changeset 4642 7c5428853566
parent 4635 63b9d2deed48
parent 4641 54b735135fd3
child 4660 cfa477946181
--- a/doc/hgrc.5.txt	Wed Jun 20 00:22:51 2007 +0200
+++ b/doc/hgrc.5.txt	Wed Jun 20 22:05:43 2007 +0200
@@ -327,6 +327,11 @@
   Also, hooks like "commit" will be called in all contexts that
   generate a commit (eg. tag) and not just the commit command.
 
+  Note2: Environment variables with empty values may not be passed to
+  hooks on platforms like Windows. For instance, $HG_PARENT2 will
+  not be available under Windows for non-merge changesets while being
+  set to an empty value under Unix-like systems.
+
   The syntax for Python hooks is as follows:
 
     hookname = python:modulename.submodule.callable