Re: hook for line breaks?

Brooks Moses wrote:

Patrik Nyman wrote:

I see. Ok, I want to write lute (or guitar) tabulature,
like

|-------------|-3---------3-|
|-3---------3-|-------------|
|---------2---|---------0---|
|-----3-1-----|-------1-----|
|---1---------|-0-3-0-------|
|-0-----------|-------------|

but with the lines unbroken. Every column is defined in a
seven-argument macro (the sevent argument being the note
value that goes on top). The columns are set in boxes, and
the space between these boxes must be allowd to stretch
in order to get justified lines. The way I've been doing it
so far is to place a box containing six horisontal lines
over each vertical box with \rlap, and making the line box
slightly wider than the box with the numbers, so there'll
be no gaps when the space stretches. This works pretty well,
but in extreme situations there will stil be gaps.


I think it would be possible to use a \discretionary command between each column box, rather than simple glue as it sounds like you're currently doing. This would provide a hook for something that is only used at the end of the line, though there are some limits on what it can contain -- only characters, boxes, and kerns, according to the TeXbook. That sounds workable in this case; you should be able set your lines in a box, and then put that box in the \discretionary. (The glue, though, will have to go outside.)

- Brooks


Thanks for the tip, I'll look into it.

--
Patrik Nyman
patrik dot nyman at orient dot su dot se
.

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