[PATCH 8/8] rebase -i: write better reflog messages

[Ramkumar Ramachandra <artagnon@gmail.com>]

Now that the "checkout" invoked internally from "rebase -i" knows to
honor GIT_REFLOG_ACTION, we can start to use it to write a better reflog
message when "rebase -i anotherbranch", "rebase -i --onto branch",
etc. internally checks out the new fork point.  We will write:

  rebase -i (start): checkout master

instead of the old

  rebase -i (start)

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 git-rebase--interactive.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index f953d8d..5179500 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -326,6 +326,7 @@ pick_one_preserving_merges () {
 		if [ "$1" != "-n" ]
 		then
 			# detach HEAD to current parent
+			GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $first_parent"
 			output git checkout $first_parent 2> /dev/null ||
 				die "Cannot move HEAD to $first_parent"
 		fi
@@ -838,6 +839,7 @@ 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 $switch_to"
 fi
@@ -981,6 +983,7 @@ has_action "$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
-- 
1.8.3.1.456.gb7f4cb6