Well, it's case sensitive. ABNF quoted strings, e.g. "A:" are not case sensitive. ABC is (mostly) a case senstive language. So if I want to stick to ABNF, which happens to be a standard, I'll have to use e.g. %x58.3A and have a comment "X:" after it.
Please use strings like "A:" as you did in your previous BNF definitions, and make an annotation that all strings are case sensitive. %x58.3A is so unreadable that it really pays to break the ABNF standard in this respect.
Any other comments from the list on this? Should I change the BNF to case sensitive using character strings instead, or would that cause problems creating parsers using e.g. lex and yacc?
Perhaps someone should write a program that parses BNF and converts it to ABNF... ;-)
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