Annex A (informative) Grammar summary [gram] (original) (raw)

pp-balanced-token:
( pp-balanced-token-seq )
[ pp-balanced-token-seq ]
{ pp-balanced-token-seq }
any pp-token except:
parenthesis (U+0028 left parenthesis and U+0029 right parenthesis),
bracket (U+005b left square bracket and U+005d right square bracket), or
brace (U+007b left curly bracket and U+007d right curly bracket).