[PATCH 6/8] diff: use emit_line_0 once per line

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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.

Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---
 diff.c | 26 ++++++++++++--------------
 1 file changed, 12 insertions(+), 14 deletions(-)

diff --git a/diff.c b/diff.c
index a36ed92c54c..fdad7ffdd77 100644
--- a/diff.c
+++ b/diff.c
@@ -583,10 +583,7 @@ static void emit_line_0(struct diff_options *o,
 	int nofirst;
 	FILE *file = o->file;
 
-	if (first)
-		fputs(diff_line_prefix(o), file);
-	else if (!len)
-		return;
+	fputs(diff_line_prefix(o), file);
 
 	if (len == 0) {
 		has_trailing_newline = (first == '\n');
@@ -606,13 +603,17 @@ static void emit_line_0(struct diff_options *o,
 	if (len || !nofirst) {
 		if (reverse && want_color(o->use_color))
 			fputs(GIT_COLOR_REVERSE, file);
-		if (set_sign && set_sign[0])
-			fputs(set_sign, file);
+		if (set_sign || set)
+			fputs(set_sign ? set_sign : set, file);
 		if (first && !nofirst)
 			fputc(first, file);
-		if (set)
-			fputs(set, file);
-		fwrite(line, len, 1, file);
+		if (len) {
+			if (set_sign && set && set != set_sign)
+				fputs(reset, file);
+			if (set)
+				fputs(set, file);
+			fwrite(line, len, 1, file);
+		}
 		fputs(reset, file);
 	}
 	if (has_trailing_carriage_return)
@@ -999,16 +1000,13 @@ 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);
 	else {
 		/* Emit just the prefix, then the rest. */
-		emit_line_0(o, set_sign ? set_sign : set, NULL, !!set_sign, reset,
-			    sign, "", 0);
+		emit_line_0(o, set_sign, set, !!set_sign, reset, sign, "", 0);
 		ws_check_emit(line, len, ws_rule,
 			      o->file, set, reset, ws);
 	}
-- 
2.18.0.132.g195c49a2227




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