This is most likely relevant for authors of function packages, but
may affect some other gretl users.
The function cnameset() sets column names for a specified matrix,
and rnameset() sets row names. The help for these functions says
that you should supply a number of names equal to the column or row
dimension of the matrix in question, but up till recently we have
tolerated "excess names" (more names than columns or rows). What
happens in that case is not well-defined: it may be what you want or
it may not.
In current git, and probably in the next gretl release, this has
been tightened up: you MUST supply the right number of names or
these functions will flag an error.
If you're using current gretl git or a snapshot and you start seeing
an error from calls to cnameset() or rnameset(), that will be what's
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