[PATCH v2] git-rebase--interactive.sh: add config option for custom instruction format

[Michael Rappazzo <rappazzo@gmail.com>]

A config option 'rebase.instructionFormat' can override the
default 'oneline' format of the rebase instruction list.

Since the list is parsed using the left, right or boundary mark plus
the sha1, they are prepended to the instruction format.

Signed-off-by: Michael Rappazzo <rappazzo@gmail.com>
---
 git-rebase--interactive.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index dc3133f..b92375e 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -977,7 +977,9 @@ else
 	revisions=$onto...$orig_head
 	shortrevisions=$shorthead
 fi
-git rev-list $merges_option --pretty=oneline --reverse --left-right --topo-order \
+format=$(git config --get rebase.instructionFormat)
+# the 'rev-list .. | sed' requires %m to parse; the instruction requires %H to parse
+git rev-list $merges_option --format="%m%H ${format-%s}" --reverse --left-right --topo-order \
 	$revisions ${restrict_revision+^$restrict_revision} | \
 	sed -n "s/^>//p" |
 while read -r sha1 rest
-- 
2.4.2