[RFC PATCH 1/3] xdiff-interface: make xdl_blankline() available

[Phillip Wood <phillip.wood@talktalk.net>]

From: Phillip Wood <phillip.wood@dunelm.org.uk>

This will be used by the move detection code.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 xdiff-interface.c | 5 +++++
 xdiff-interface.h | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/xdiff-interface.c b/xdiff-interface.c
index 9315bc0ede..eceabfa72d 100644
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -308,6 +308,11 @@ int xdiff_compare_lines(const char *l1, long s1,
 	return xdl_recmatch(l1, s1, l2, s2, flags);
 }
 
+int xdiff_is_blankline(const char *l1, long s1, long flags)
+{
+	return xdl_blankline(l1, s1, flags);
+}
+
 int git_xmerge_style = -1;
 
 int git_xmerge_config(const char *var, const char *value, void *cb)
diff --git a/xdiff-interface.h b/xdiff-interface.h
index 135fc05d72..d0008b016f 100644
--- a/xdiff-interface.h
+++ b/xdiff-interface.h
@@ -45,4 +45,9 @@ extern int xdiff_compare_lines(const char *l1, long s1,
  */
 extern unsigned long xdiff_hash_string(const char *s, size_t len, long flags);
 
+/*
+ * Returns 1 if the line is blank, taking XDF_WHITESPACE_FLAGS into account
+ */
+extern int xdiff_is_blankline(const char *s, long len, long flags);
+
 #endif
-- 
2.19.0