[PATCH 5/5] add--interactive: add option to autosplit hunks

[Jeff King <peff@peff.net>]

It is sometimes useful to see changes in their smallest
possible form, rather than complete hunks with overlapping
context. You can do this manually, of course, with the
's'plit hunk command. But when filtering hunks, you may want
to pre-split to give your filtering a finer granularity.

This patch adds only the perl infrastructure; to expose this
to the user, the various callers of add--interactive need to
pass the new option through to the perl script.

Signed-off-by: Jeff King <peff@peff.net>
---
 git-add--interactive.perl |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index 917b2a9..41c7c6f 100755
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -88,6 +88,7 @@ my $patch_mode;
 my $patch_mode_revision;
 my @patch_mode_hunk_filter;
 my $patch_mode_negate_filter;
+my $patch_mode_autosplit;
 
 sub apply_patch;
 sub apply_patch_for_checkout_commit;
@@ -1291,6 +1292,10 @@ sub patch_update_file {
 	my $path = shift;
 	my ($head, @hunk) = parse_diff($path);
 
+	if ($patch_mode_autosplit) {
+		@hunk = map { split_hunk($_->{TEXT}, $_->{DISPLAY}) } @hunk;
+	}
+
 	if (@patch_mode_hunk_filter) {
 		@hunk = grep { want_hunk($_) } @hunk;
 		return unless @hunk;
@@ -1594,6 +1599,9 @@ sub process_args {
 		elsif ($ARGV[0] eq '--negate-hunk-filter') {
 			$patch_mode_negate_filter = 1;
 		}
+		elsif ($ARGV[0] eq '--split-hunks') {
+			$patch_mode_autosplit = 1;
+		}
 		else {
 			last;
 		}
-- 
1.7.5.4.31.ge4d5e