diff options
Diffstat (limited to 'doc/syntax')
| -rw-r--r-- | doc/syntax | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -56,10 +56,28 @@ verbatim ::= 'verbatim' _value [{_ value}] calc ::= 'calc' (__ value | _ any_exec) [{_ value | _ any_exec}] -any_exec ::= '(' _ exec_type (__ value | _ any_exec) [{_ value | _ any_exec}] _ ')' +any_exec ::= '(' _ (exec_sequence | exec_redirect) _ ')' + +exec_sequence ::= exec_type (__ value | _ any_exec) [{_ value | _ any_exec}] exec_type ::= "exec" | "calc" | "pipe" | "fullpipe" | "cat" | "and" | "or" +exec_redirect ::= std_redirect | fd_redirect | std_redirect_fd | fd_redirect_fd + +std_redirect ::= input _ any_exec _ value + +fd_redirect ::= "fd" _ any_exec _ (number _value | fdnum _ value) + +std_redirect_fd ::= input "-fd" _ any_exec _ (number | fdnum) + +fd_redirect_fd ::= "fd" _ any_exec _ (number __ number | (number | fdnum) _ fdnum | fdnum _ number) + +input ::= "stdin" | "stdout" | "stderr" + +fdnum :: = "(" _ input _ ")" + +number ::= {"0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"} + name ::= {letter | escape | squote | dquote} letter :: $any ^ ' ' ^ \t ^ \n ^ \r ^ \t ^ '\' ^ \' ^ \" |