[PATCH 3/3] rebase -i: write better reflog messages for start

[Ramkumar Ramachandra <artagnon@gmail.com>]

Invoking 'git rebase -i' writes the following line to the reflog at the
start of the operation:

  rebase -i (start)

This is not very useful.  Make it more informative like:

  rebase -i (start): checkout master

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
 git-rebase--interactive.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 5822b2c..a05a6e4 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -837,6 +837,7 @@ comment_for_reflog start
 
 if test ! -z "$switch_to"
 then
+	GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to"
 	output git checkout "$switch_to" -- ||
 		die "Could not checkout $switch_to"
 fi
@@ -980,6 +981,7 @@ has_action "$todo" ||
 
 test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks
 
+GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name"
 output git checkout $onto || die_abort "could not detach HEAD"
 git update-ref ORIG_HEAD $orig_head
 do_rest
-- 
1.8.3.254.g60f9e5b