Re: Line continuation characters

[email protected] (Randal L. Schwartz) writes:

>>>>>> "Marc" == Marc Mims <[email protected]> writes:
> 
> Marc> I need to parse a grammar that includes line continuation
> Marc> characters.  For example:
> If the skip between tokens is any combination of spaces, tabs, or "+\n" combos,
> then say that:
> 
> file: command(s)
> command: <skip: '(?:[ \t]+|\+\n)+'> commandline /\n/
> commandline: "//" ... # real command
> commandline: "*" ... # comment
> 
> You need to match a literal /\n/ at the end of your real
> command, since that's not matched by this skip.

Because Marc's grammar seems to be otherwise line-oriented, I'd
suggest preprocessing the grammar input to merge lines as needed, to
simplify the grammar.  The major disadvantage would be that line
numbers would be off when reporting errors though.

Ted