This allows users to edit the todo file while they're stopped in the
middle of an interactive rebase. When this action is executed, all
comments from the original todo file are stripped, and new help messages
are appended to the end.

Signed-off-by: Andrew Wong <andrew.k...@gmail.com>
---
 Documentation/git-rebase.txt |  5 ++++-
 git-rebase--interactive.sh   | 16 ++++++++++++++++
 git-rebase.sh                | 14 ++++++++++++++
 3 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index fd535b0..da067ec 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -12,7 +12,7 @@ SYNOPSIS
        [<upstream>] [<branch>]
 'git rebase' [-i | --interactive] [options] [--exec <cmd>] [--onto <newbase>]
        --root [<branch>]
-'git rebase' --continue | --skip | --abort
+'git rebase' --continue | --skip | --abort | --edit-todo
 
 DESCRIPTION
 -----------
@@ -245,6 +245,9 @@ leave out at most one of A and B, in which case it defaults 
to HEAD.
 --skip::
        Restart the rebasing process by skipping the current patch.
 
+--edit-todo::
+       Edit the todo list during an interactive rebase.
+
 -m::
 --merge::
        Use merging strategies to rebase.  When the recursive (default) merge
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 4d57e50..ca55fac 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -792,6 +792,22 @@ skip)
 
        do_rest
        ;;
+edit-todo)
+       sed -i '/^#/d' "$todo"
+       append_todo_help
+       cat >> "$todo" << EOF
+#
+# You are editing the todo file of an ongoing interactive rebase.
+# To continue rebase after editing, run:
+#     git rebase --continue
+#
+EOF
+
+       git_sequence_editor "$todo" ||
+       die_abort "Could not execute editor"
+
+       exit
+       ;;
 esac
 
 git var GIT_COMMITTER_IDENT >/dev/null ||
diff --git a/git-rebase.sh b/git-rebase.sh
index 15da926..e660203 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -38,6 +38,7 @@ C=!                passed to 'git apply'
 continue!          continue
 abort!             abort and check out the original branch
 skip!              skip current patch and continue
+edit-todo!         edit the todo list during an interactive rebase
 "
 . git-sh-setup
 . git-sh-i18n
@@ -194,6 +195,10 @@ do
                test $total_argc -eq 2 || usage
                action=${1##--}
                ;;
+       --edit-todo)
+               test $total_argc -eq 2 || usage
+               action=${1##--}
+               ;;
        --onto)
                test 2 -le "$#" || usage
                onto="$2"
@@ -306,6 +311,12 @@ then
        fi
 fi
 
+if test "$action" = "edit-todo" &&
+       test "$type" != "interactive"
+then
+       die "$(gettext "The --edit-todo action can only be used during 
interactive rebase.")"
+fi
+
 case "$action" in
 continue)
        # Sanity check
@@ -338,6 +349,9 @@ abort)
        rm -r "$state_dir"
        exit
        ;;
+edit-todo)
+       run_specific_rebase
+       ;;
 esac
 
 # Make sure no rebase is in progress
-- 
1.7.12.318.g08bf5ad.dirty

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