From ed94f54940fed8c7e9882c222b4791140bc209ba Mon Sep 17 00:00:00 2001
From: yuuri <houjie95@foxmail.com>
Date: Sat, 1 May 2021 20:26:49 +0800
Subject: [PATCH] diff:add option to ignore blank line changes

---
 .gitignore          | 1 +
 include/git2/diff.h | 4 ++++
 src/diff_xdiff.c    | 3 +++
 3 files changed, 8 insertions(+)

diff --git a/.gitignore b/.gitignore
index 69d388f8e..1b482f038 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /tags
 CMakeSettings.json
 .vs
+.idea
diff --git a/include/git2/diff.h b/include/git2/diff.h
index e10555595..c63d93dc8 100644
--- a/include/git2/diff.h
+++ b/include/git2/diff.h
@@ -168,6 +168,10 @@ typedef enum {
 	 *  can apply given diff information to binary files.
 	 */
 	GIT_DIFF_SHOW_BINARY = (1u << 30),
+
+	/** Ignore blank lines */
+	GIT_DIFF_IGNORE_BLANK_LINES = (1u << 31),
+
 } git_diff_option_t;
 
 /**
diff --git a/src/diff_xdiff.c b/src/diff_xdiff.c
index c4668fa2f..7a32ea43f 100644
--- a/src/diff_xdiff.c
+++ b/src/diff_xdiff.c
@@ -259,5 +259,8 @@ void git_xdiff_init(git_xdiff_output *xo, const git_diff_options *opts)
 	if (flags & GIT_DIFF_MINIMAL)
 		xo->params.flags |= XDF_NEED_MINIMAL;
 
+	if (flags & GIT_DIFF_IGNORE_BLANK_LINES)
+		xo->params.flags |= XDF_IGNORE_BLANK_LINES;
+
 	xo->callback.outf = git_xdiff_cb;
 }