feat: Add Support for Boustrophedon Writing Direction about keyman HOT 4 CLOSED

I think it wouldn't, that would be an acceptable sacrifice. Manual line breaks are assumed. Fortunately, the samples I've seen (stone carved) don't have a lot of words per line, so in reproducing them the user would input the manual line break anyway and the end of the line on the page is rarely reached.

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You could also look at context to determine the current writing direction:

any(ltrletter) + any(key) > context index(ltrout, 2)
any(rtlletter) + any(key) > context index(rtlout, 2)

There are deeper questions on directionality which Keyman cannot answer -- is the script in Unicode, do the characters have directionality properties? Keyman cannot directly manipulate an app's paragraph directionality, although it can insert RTL or LTR embeds which have a similar effect for many cases.

I'd prefer to see this implemented in a keyboard and taken as far as possible there before we invest energy in Keyman itself. Perhaps an experimental keyboard will highlight things which Keyman could do which a keyboard wouldn't be able to?

I will go ahead and close this as an issue on this repository -- I look forward to seeing something appear in the Keyboards repo 😁

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How would this work with line wrapping?

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Could this be implemented without changes to Keyman with the use of keyboard options?

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