parse.y: remove an extra error message

* parse.y (parse_string): bail out when word-list meets end of
  input not to show an extra "unexpected" error message after the
  preceding error.

      $ ruby -e "%w["
      -e:1: unterminated string meets end of file
      -e:1: syntax error, unexpected terminator, expecting ' '

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66918 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 1f7cf2f53f..6c7ca60b46 100644
--- a/parse.y
+++ b/parse.y
@@ -6009,6 +6009,12 @@ parse_string(struct parser_params *p, rb_strterm_literal_t *quote)
 # define unterminated_literal(mesg) compile_error(p,  mesg)
 #endif
 	    literal_flush(p, p->lex.pcur);
+	    if (func & STR_FUNC_QWORDS) {
+		/* no content to add, bailing out here */
+		unterminated_literal("unterminated list meets end of file");
+		p->lex.strterm = 0;
+		return tSTRING_END;
+	    }
 	    if (func & STR_FUNC_REGEXP) {
 		unterminated_literal("unterminated regexp meets end of file");
 	    }