diff: use emit_line_0 once per line
All lines that use emit_line_0 multiple times per line, are combined
into a single call to emit_line_0, making use of the 'set' argument.
We gain a little efficiency here, as we can omit emission of color and
accompanying reset if 'len == 0'.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/diff.c b/diff.c
index 4ef6638..4f430f4 100644
--- a/diff.c
+++ b/diff.c
@@ -656,12 +656,14 @@ static void emit_line_0(struct diff_options *o,
fputs(set_sign, file);
if (first && !nofirst)
fputc(first, file);
- if (set && set != set_sign) {
- if (set_sign)
- fputs(reset, file);
- fputs(set, file);
+ if (len) {
+ if (set && set != set_sign) {
+ if (set_sign)
+ fputs(reset, file);
+ fputs(set, file);
+ }
+ fwrite(line, len, 1, file);
}
- fwrite(line, len, 1, file);
fputs(reset, file);
}
if (has_trailing_carriage_return)
@@ -1207,9 +1209,7 @@ static void emit_line_ws_markup(struct diff_options *o,
if (!ws && !set_sign)
emit_line_0(o, set, NULL, 0, reset, sign, line, len);
else if (!ws) {
- /* Emit just the prefix, then the rest. */
- emit_line_0(o, set_sign, NULL, !!set_sign, reset, sign, "", 0);
- emit_line_0(o, set, NULL, 0, reset, 0, line, len);
+ emit_line_0(o, set_sign, set, !!set_sign, reset, sign, line, len);
} else if (blank_at_eof)
/* Blank line at EOF - paint '+' as well */
emit_line_0(o, ws, NULL, 0, reset, sign, line, len);
