Re: Syntax error if paragraph contains more than 1 printable character

On Tue, 12 Dec 2023 23:06:14 -0500
Steve Litt <[email protected]> wrote:

> I've already split paratext into multiple LINE tokens which represent
> a line without its NL, and now I'm thinking of splitting line into
> multiple chars ("[^\n]"). Perhaps this will make the rules less
> complicated, though longer.

Have the scanner return two tokens only: 

	LINE  a line of text, no newline
	SEP   a blank line

The lexer might have:

.+/\n  { ... return LINE; }
(\n[[:blank:]]*){2,} { return SEP; } // two or more blank lines
\n       { /* ignore */ }

Then your parser wants:

top:	paragraphs
	| paragraphs SEP // to allow for trailing blank lines
	;
paragraphs: paragraph
	| paragraphs SEP paragraph
	;
paragraph: lines
	;
lines: LINE
	| lines LINE
	;

I would think that would work.  

--jkl