Re: Bk -words badness

[Ingo Schwarze <schwarze@usta.de>]

Hi Kristaps,

> The enclosed patch is a first stab at this.  It only works for explicit
> `Bk -words' for now; it's trivial to extend this to SYNPRETTY.  As you
> can see, it simply checks whether it's in a KEEP mode and resets to
> PREKEEP if it's a line subsequent the prior node.

Excellent, this is much more elegant than what i would have done,
which is closing out a pending keep at the end of the line and
re-opening it, in a way similar to .Fl closing out and reopening
itself when encountering punctuation.

Please commit to both repositories!

> Thoughts?

If we now enable automatic implicit word keeping in the SYNOPSIS,
i guess we are mostly done with .Bk.

We only need to pay attention because .Bk doesn't nest well.
An explicit .Bk/.Ek in the SYNOPSIS would have the .Ek close
out the implicit automatic keep, so i guess we need to skip
the code in termp_bk_post in SYNOPSIS mode.

Yours,
  Ingo


> Index: mdoc_term.c
> ===================================================================
> RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mdoc_term.c,v
> retrieving revision 1.171
> diff -u -r1.171 mdoc_term.c
> --- mdoc_term.c	4 Jul 2010 22:04:04 -0000	1.171
> +++ mdoc_term.c	5 Jul 2010 10:36:57 -0000
> @@ -330,6 +330,23 @@
>  	else if (termacts[n->tok].pre && ENDBODY_NOT == n->end)
>  		chld = (*termacts[n->tok].pre)(p, &npair, m, n);
>  
> +	/*
> +	 * Keeps only work until the end of a line.  If a keep was
> +	 * invoked in a prior line, revert it to PREKEEP.
> +	 */
> +
> +	if (TERMP_KEEP & p->flags) {
> +		if (n->prev && n->prev->line != n->line) {
> +			p->flags &= ~TERMP_KEEP;
> +			p->flags |= TERMP_PREKEEP;
> +		} else if (NULL == n->prev) {
> +			if (n->parent && n->parent->line != n->line) {
> +				p->flags &= ~TERMP_KEEP;
> +				p->flags |= TERMP_PREKEEP;
> +			}
> +		}
> +	}
> +
>  	if (chld && n->child)
>  		print_mdoc_nodelist(p, &npair, m, n->child);
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