Re: fold(1) and "blank" and add lazy option

[Adam Hoka <adam.hoka%gmail.com@localhost>]

On 09/22/09 13:43, Jeremy C. Reed wrote:
> fold(1) says:
>
>   -s      Fold line after the last blank character within the first width
>           column positions (or bytes).
>
> I plan to add to that -s description: "If a blank character does not
> exist within the width, then a longer line will still be split at
> the width."
>
> It specifically says "blank". But code has:
>
>            if (buf[i] == ' ')
>                    last_space = i;
>
> It doesn't use isblank. I may change the manual page to say "space"
> instead (since \t has a different purpose in fold). Anyways "-s" for
> *s*pace makes sense.

Check POSIX 2008 if you are unsure, if it doesnt say anything about it, 
then its ok, I think.

> The -[0-9] arguments aren't documented in manual page nor in usage. Why?
> Historical, but planned to be removed to just use -w instead?

I guess its a remnant from ancient times, its not documented because it
shouldn't be relied on, I suppose.

> I was thinking of adding a lazy option so when using -s it won't still
> split at width if there is no space up to the width. So some
> output lines may be longer than width when using the option.

I think I had a version which did this. It makes sense actually, but 
later I have decided to keep the historical behaviour.

>    Jeremy C. Reed
>
> p.s. I am looking for a LaTeX formatter, that can fold and possibly
> justify lines. It must know LaTeX, for example, if it folds a % comment,
> then it should add a % to continue the comment.