diff -r 24536e980c9e committing.rst
--- a/committing.rst	Mon Apr 13 15:50:32 2015 -0700
+++ b/committing.rst	Wed Apr 15 01:44:34 2015 -0400
@@ -304,10 +304,33 @@
 will reject all changesets having the wrong line endings, so enabling this
 extension on your local computer is in your best interest.
 
+As a core developer, it can be very helpful to set up the same commit checks
+locally that the main repo enforces for incoming patch sets. This can save a
+great deal of frustration with the server rejecting ``hg push`` for changes
+(which can be especially time consuming if you have already merged changes
+across branches).
+
+Configuring and using the whitespace checking hook found in the `hooks
+repository`_ will help check incoming patch sets. To configure a hook,
+add configuration settings to ``~/.hgrc`` for the relevant repo(s) (remember
+to adjust the path appropriately for the checked out location of the
+`hooks repository`_). To configure a "pretxncommit" hook that will check
+whitespace before the changeset is committed and can thus abort the commit
+if whitespace is found, add::
+
+   [hooks]
+   pretxncommit.whitespace = python:/home/hg/repos/hooks/checkwhitespace.py:check_whitespace_single
+
+The "commit" hook can also be configured, and if used, the changeset will be
+applied anyway::
+
+   [hooks]
+   commit = python:~/devel/hg_hooks/checkwhitespace.py:check_whitespace_single
 
 .. _configuration file: http://www.selenic.com/mercurial/hgrc.5.html#files
 .. _extended diff format: http://www.selenic.com/mercurial/hg.1.html#diffs
 .. _eol extension: http://mercurial.selenic.com/wiki/EolExtension
+.. _hooks repository: https://hg.python.org/hooks
 
 
 Clones Setup