ebnf-terminal-regexpebnf-terminal-regexp is a variable defined in `
ebnf2ps.el'. Its value is
nilDocumentation: Specify how it's a terminal name. If it's nil, the terminal name must be enclosed by `"'. If it's a string, it should be a regexp that it'll be used to determine a terminal name; terminal name may also be enclosed by `"'. 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.