diff.c: emit_diff_symbol learns DIFF_SYMBOL_WORDS[_PORCELAIN]

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

Author: stefanbeller

diff.c

@@ -561,6 +561,8 @@ static void emit_line(struct diff_options *o, const char *set, const char *reset
 }
 
 enum diff_symbol {
+	DIFF_SYMBOL_WORDS_PORCELAIN,
+	DIFF_SYMBOL_WORDS,
 	DIFF_SYMBOL_CONTEXT,
 	DIFF_SYMBOL_PLUS,
 	DIFF_SYMBOL_MINUS,
@@ -649,6 +651,26 @@ static void emit_diff_symbol(struct diff_options *o, enum diff_symbol s,
 		emit_line_ws_markup(o, set, reset, line, len, '-',
 				    flags & DIFF_SYMBOL_CONTENT_WS_MASK, 0);
 		break;
+	case DIFF_SYMBOL_WORDS_PORCELAIN:
+		context = diff_get_color_opt(o, DIFF_CONTEXT);
+		reset = diff_get_color_opt(o, DIFF_RESET);
+		emit_line(o, context, reset, line, len);
+		fputs("~\n", o->file);
+		break;
+	case DIFF_SYMBOL_WORDS:
+		context = diff_get_color_opt(o, DIFF_CONTEXT);
+		reset = diff_get_color_opt(o, DIFF_RESET);
+		/*
+		 * Skip the prefix character, if any.  With
+		 * diff_suppress_blank_empty, there may be
+		 * none.
+		 */
+		if (line[0] != '\n') {
+			line++;
+			len--;
+		}
+		emit_line(o, context, reset, line, len);
+		break;
 	default:
 		die("BUG: unknown diff symbol");
 	}
@@ -1342,7 +1364,6 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
 {
 	struct emit_callback *ecbdata = priv;
 	const char *meta = diff_get_color(ecbdata->color_diff, DIFF_METAINFO);
-	const char *context = diff_get_color(ecbdata->color_diff, DIFF_CONTEXT);
 	const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
 	struct diff_options *o = ecbdata->opt;
 	const char *line_prefix = diff_line_prefix(o);
@@ -1384,6 +1405,9 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
 	}
 
 	if (ecbdata->diff_words) {
+		enum diff_symbol s =
+			ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN ?
+			DIFF_SYMBOL_WORDS_PORCELAIN : DIFF_SYMBOL_WORDS;
 		if (line[0] == '-') {
 			diff_words_append(line, len,
 					  &ecbdata->diff_words->minus);
@@ -1403,21 +1427,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
 			return;
 		}
 		diff_words_flush(ecbdata);
-		if (ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN) {
-			emit_line(o, context, reset, line, len);
-			fputs("~\n", o->file);
-		} else {
-			/*
-			 * Skip the prefix character, if any.  With
-			 * diff_suppress_blank_empty, there may be
-			 * none.
-			 */
-			if (line[0] != '\n') {
-			      line++;
-			      len--;
-			}
-			emit_line(o, context, reset, line, len);
-		}
+		emit_diff_symbol(o, s, line, len, 0);
 		return;
 	}