[xep-support] Stretchable no break space

[Jirka Kosek]

Hi,

typographical rules for Czech language forbids single letter 
prepositions at the end of line. This is commonly solved by inserting 
  ( ) after each preposition. So instead of writing:

... V lese ...

we often write

... V lese ...

and we are sure that the line break would not occur between "V" and 
"lese". The problem is when text-align="justify" is specified and spaces 
between words must be stretched. Normal spaces ( ) are stretched to 
proportionaly distribute gap between words. Unfortunately width of 
no-break space does not stretch so these spaces look thinner than normal 
spaces. This leads to a very unpleasant rendering.

Is it possible to make no-break space stretchable in XEP (so it will 
behave same way as ~ works in TeX)? Or is there other character with 
similar behaviour?

If not, can you modify XEP rendering engine to treat no-break space as 
stretchable space? Without this feature it would be impossible to use 
XEP for high-end formatting in Czech language.

Thanks,

				Jirka

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   Jirka Kosek     e-mail: jirka at kosek.cz     http://www.kosek.cz
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