# HG changeset patch
# User timeless <timeless@mozdev.org>
# Date 2016-03-01 10:43:52
# Node ID ce24de063aa5cbd6ba83710554d013987f8d6420
# Parent  e96a3ae025edd76681d364c63504c180bd061a58

blackbox: rewrite dirty documentation noting it is expensive

diff --git a/hgext/blackbox.py b/hgext/blackbox.py
--- a/hgext/blackbox.py
+++ b/hgext/blackbox.py
@@ -11,13 +11,12 @@
 Logs event information to .hg/blackbox.log to help debug and diagnose problems.
 The events that get logged can be configured via the blackbox.track config key.
 
-If you want to record whether the repository is dirty (a `+` sign, as you'd
-get when using :hg:`id`), you can set the blackbox.dirty config key.
-
 Examples::
 
   [blackbox]
   track = *
+  # dirty is *EXPENSIVE* (slow);
+  # each log entry indicates `+` if the repository is dirty, like :hg:`id`.
   dirty = True
 
   [blackbox]