commit a076350

pattern macros in substitution references are not allowed in posix 2008

 1@@ -415,6 +415,15 @@ expandsubstref(struct EvalCtx *ctx, const char *s, size_t colon, size_t eq, size
 2 	free(name);
 3 
 4 	if (base) {
 5+		if (ctx->mode == MODE_POSIX_2008 && (strchr(from, '%') || strchr(to, '%'))) {
 6+			evalerr(ctx,
 7+			        "pattern macros in substitution references are not valid in POSIX 2008",
 8+			        0);
 9+			free(base);
10+			free(from);
11+			free(to);
12+			return xstrdup("");
13+		}
14 		val = substval(base, from, to);
15 		free(base);
16 	} else if (auto_name) {