diff: add option to show context between close hunks

Merge two hunks if there is only the specified number of otherwise unshown
context between them.  For --inter-hunk-context=1, the resulting patch has
the same number of lines but shows uninterrupted context instead of a
context header line in between.

Patches generated with this option are easier to read but are also more
likely to conflict if the file to be patched contains other changes.

This patch keeps the default for this option at 0.  It is intended to just
make the feature available in order to see its advantages and downsides.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/diff.h b/diff.h
index 42582edee..4d5a32781 100644
--- a/diff.h
+++ b/diff.h
@@ -78,6 +78,7 @@ struct diff_options {
 	const char *a_prefix, *b_prefix;
 	unsigned flags;
 	int context;
+	int interhunkcontext;
 	int break_opt;
 	int detect_rename;
 	int skip_stat_unmatch;