[Jbeta] Syntax coloring bug

[Anssi Sepp�l]

Probably not so important, but J601 syntax coloring behaves badly. 
When configured to colour the arguments in other colour the scandiks 
are no recognised as a letter following or preseding x y n etc.

xäy  is coloured like x y. Both x and y are coloured and ä is uncoloured.
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