# HG changeset patch
# User Kyle Lippincott <spectral@google.com>
# Date 1522437406 25200
# Node ID 2208149c4b8e793eada6426ed6be82c03afc3e7d
# Parent  b9dd8403d8ff4b36847ce405c0db127ca64491a1
extdiff: document that it copies modified files back to working directory

Differential Revision: https://phab.mercurial-scm.org/D2976

diff -r b9dd8403d8ff -r 2208149c4b8e hgext/extdiff.py
--- a/hgext/extdiff.py	Fri Mar 30 13:39:06 2018 -0700
+++ b/hgext/extdiff.py	Fri Mar 30 12:16:46 2018 -0700
@@ -13,6 +13,11 @@
 non-option arguments: paths to directories containing snapshots of
 files to compare.
 
+If there is more than one file being compared and the "child" revision
+is the working directory, any modifications made in the external diff
+program will be copied back to the working directory from the temporary
+directory.
+
 The extdiff extension also allows you to configure new diff commands, so
 you do not need to type :hg:`extdiff -p kdiff3` always. ::
 
diff -r b9dd8403d8ff -r 2208149c4b8e tests/test-extension.t
--- a/tests/test-extension.t	Fri Mar 30 13:39:06 2018 -0700
+++ b/tests/test-extension.t	Fri Mar 30 12:16:46 2018 -0700
@@ -730,6 +730,10 @@
   called with a configurable set of options and two non-option arguments: paths
   to directories containing snapshots of files to compare.
   
+  If there is more than one file being compared and the "child" revision is the
+  working directory, any modifications made in the external diff program will be
+  copied back to the working directory from the temporary directory.
+  
   The extdiff extension also allows you to configure new diff commands, so you
   do not need to type 'hg extdiff -p kdiff3' always.