From catalog/abnf-syntax.abnf rule: concatenation

Definition

concatenation = repetition *( 1*c-wsp repetition )

repetition = [ repeat ] element

repeat = 1*DIGIT / ( *DIGIT "*" *DIGIT )

element = rulename / group / option / char-val / num-val / prose-val

rulename = ALPHA *( ALPHA / DIGIT / "-" )

prose-val = "<" *( %x20-3d / %x3f-7e ) ">"

option = "[" *c-wsp alternation *c-wsp "]"

num-val = "%" ( bin-val / dec-val / hex-val )

hex-val = "x" 1*HEXDIG [ 1*( "." 1*HEXDIG ) / ( "-" 1*HEXDIG ) ]

dec-val = "d" 1*DIGIT [ 1*( "." 1*DIGIT ) / ( "-" 1*DIGIT ) ]

bin-val = "b" 1*BIT [ 1*( "." 1*BIT ) / ( "-" 1*BIT ) ]

group = "(" *c-wsp alternation *c-wsp ")"

alternation = concatenation *( *c-wsp "/" *c-wsp concatenation )

char-val = DQUOTE *( %x20-21 / %x23-7e ) DQUOTE

c-wsp = WSP / ( c-nl WSP )

c-nl = comment / CRLF

comment = ";" *( WSP / VCHAR ) CRLF

    

Info

Rulename

concatenation

Dependencies

WSP, CRLF, VCHAR, comment, c-nl, c-wsp, DQUOTE, char-val, alternation, group, BIT, bin-val, DIGIT, dec-val, HEXDIG, hex-val, num-val, option, prose-val, ALPHA, rulename, element, repeat, repetition, concatenation

Used Builtins

ALPHA, BIT, CRLF, DIGIT, DQUOTE, HEXDIG, VCHAR, WSP

Alphabet

Translations

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