diff.c: emit_diff_symbol learns DIFF_SYMBOL_NO_LF_EOF

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff.c

@@ -561,6 +561,7 @@ static void emit_line(struct diff_options *o, const char *set, const char *reset
 }
 
 enum diff_symbol {
+	DIFF_SYMBOL_NO_LF_EOF,
 	DIFF_SYMBOL_CONTEXT_FRAGINFO,
 	DIFF_SYMBOL_CONTEXT_MARKER,
 	DIFF_SYMBOL_SEPARATOR
@@ -569,8 +570,16 @@ enum diff_symbol {
 static void emit_diff_symbol(struct diff_options *o, enum diff_symbol s,
 			     const char *line, int len)
 {
+	static const char *nneof = " No newline at end of file\n";
 	const char *context, *reset;
 	switch (s) {
+	case DIFF_SYMBOL_NO_LF_EOF:
+		context = diff_get_color_opt(o, DIFF_CONTEXT);
+		reset = diff_get_color_opt(o, DIFF_RESET);
+		putc('\n', o->file);
+		emit_line_0(o, context, reset, '\\',
+			    nneof, strlen(nneof));
+		break;
 	case DIFF_SYMBOL_CONTEXT_FRAGINFO:
 		emit_line(o, "", "", line, len);
 		break;
@@ -751,7 +760,6 @@ static void emit_rewrite_lines(struct emit_callback *ecb,
 			       int prefix, const char *data, int size)
 {
 	const char *endp = NULL;
-	static const char *nneof = " No newline at end of file\n";
 	const char *reset = diff_get_color(ecb->color_diff, DIFF_RESET);
 
 	while (0 < size) {
@@ -769,13 +777,8 @@ static void emit_rewrite_lines(struct emit_callback *ecb,
 		size -= len;
 		data += len;
 	}
-	if (!endp) {
-		const char *context = diff_get_color(ecb->color_diff,
-						     DIFF_CONTEXT);
-		putc('\n', ecb->opt->file);
-		emit_line_0(ecb->opt, context, reset, '\\',
-			    nneof, strlen(nneof));
-	}
+	if (!endp)
+		emit_diff_symbol(ecb->opt, DIFF_SYMBOL_NO_LF_EOF, NULL, 0);
 }
 
 static void emit_rewrite_diff(const char *name_a,