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-rw-r--r--src/nvim/lua/xdiff.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/nvim/lua/xdiff.c b/src/nvim/lua/xdiff.c
index 3adb6088fc..cd542b0e00 100644
--- a/src/nvim/lua/xdiff.c
+++ b/src/nvim/lua/xdiff.c
@@ -69,8 +69,8 @@ static void get_linematch_results(lua_State *lstate, mmfile_t *ma, mmfile_t *mb,
const char *diff_begin[2] = { ma->ptr, mb->ptr };
int diff_length[2] = { (int)count_a, (int)count_b };
- fastforward_buf_to_lnum(&diff_begin[0], start_a);
- fastforward_buf_to_lnum(&diff_begin[1], start_b);
+ fastforward_buf_to_lnum(&diff_begin[0], start_a + 1);
+ fastforward_buf_to_lnum(&diff_begin[1], start_b + 1);
int *decisions = NULL;
size_t decisions_length = linematch_nbuffers(diff_begin, diff_length, 2, &decisions, iwhite);