ebnf-lex-comment-char

ebnf-lex-comment-char is a variable defined in `ebnf2ps.el'.
Its value is

59

Documentation:
Specify the line comment character.

It's used only when `ebnf-syntax' is `ebnf'.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 20 of Emacs.