--- gawk-3.1.7/awkgram.y.orig 2010-06-25 10:08:11.000000000 +0200 +++ gawk-3.1.7/awkgram.y 2010-06-25 10:10:34.000000000 +0200 @@ -164,7 +164,7 @@ %nonassoc LEX_IN %left FUNC_CALL LEX_BUILTIN LEX_LENGTH %nonassoc ',' -%nonassoc MATCHOP +%left MATCHOP %nonassoc RELOP '<' '>' IO_IN IO_OUT %left CONCAT_OP %left YSTRING YNUMBER @@ -702,8 +702,8 @@ */ print_expression_list : opt_expression_list - | '(' exp comma expression_list r_paren - { $$ = node($2, Node_expression_list, $4); } + | '(' expression_list r_paren + { $$ = $2; } ; output_redir