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Re: [Groff] space width

From: Werner LEMBERG
Subject: Re: [Groff] space width
Date: Mon, 27 Jan 2014 06:27:27 +0100 (CET)

>> The only real solution is to completely redesign the layout engine,
>> switching to a TeX-like paragraph handling algorithm.
> I admit to not knowing the internals of the formatting algorithm,
> but I don't see why solving this problem requires the algorithm to
> change.  To solve it, internally groff could just do what it
> currently advises the user to do: pretend the line is longer by the
> amount of padding being added to each glyph.  (groff already knows
> this amount; to the user, it's not obvious, as the amount is
> calculated based on parameters the user supplies.)

For backwards compatibility you no longer can change the behaviour of
`.tkf', so this would be a *new* command (or maybe `.tfk' with a fifth

> Granted, the issue is somewhat academic, as revamping the formatting
> algorithm is already considered a higher priority than tweaking
> .tkf, and there's no one available to do either one.

This is true, unfortunately.  However, given that groff is written in
fairly clean and conservative C++ with quite a good object class
hierarchy, implementing a new formatting algorithm shouldn't be too
difficult for people who like the object-oriented approach.


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