diff.c: fix emit_line() again not to add extra line

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/diff.c b/diff.c
index c0284775d396fc1ff89406ea9c304acc8f013c43..20135cbe7c8209835dca8d52d1d48e7aa871c1b3 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -514,13 +514,15 @@ const char *diff_get_color(int diff_use_color, enum color_diff ix)
 
 static void emit_line(FILE *file, const char *set, const char *reset, const char *line, int len)
 {
-       if (len > 0 && line[len-1] == '\n')
+       int has_trailing_newline = (len > 0 && line[len-1] == '\n');
+       if (has_trailing_newline)
                len--;
 
        fputs(set, file);
        fwrite(line, len, 1, file);
        fputs(reset, file);
-       fputc('\n', file);
+       if (has_trailing_newline)
+               fputc('\n', file);
 }
 
 static void emit_add_line(const char *reset, struct emit_callback *ecbdata, const char *line, int len)