[developers] Re: cheap MWE problem and solution.

[Stephan Oepen]

hi bernd,

> If everyone agrees on this change, i'll put it into the main branch.

yes, please do.  this change implements what [incr tsdb()] expects for
derivations including multi-word lexemes, i.e. should be seen as a bug
fix.

                                             thanks in advance  -  oe

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