[Gretl-devel] Re: two problems with "setinfo ... --description=..."

On Sun, 10 May 2020, Sven Schreiber wrote: > > 1 - This first problem I cannot reproduce with a minimal function > example; I'm suspecting it might depend on being wrapped inside a > package. The problem is that the descriptive label of a series is _not_ > overwritten with a new content when the series itself is replaced by the > return value of the package. > > 1b - Another thing that somehow seems to depend on doing it inside a > package: Doing 'setinfo myseries --description="@mylabel"' for an > existing string variable 'mylabel' just yields the literal "mylabel" as > description. I'd have to see examples to say anything useful in those cases.

> 2 -  The --description option to 'setinfo' apparently does not allow a > string variable as input. Doing --description=s for an existing string s > just gives the literal "s" as the label. In general you cannot expect a string variable to be cashed out in the context of a gretl command option parameter.

However, there is a "hidden" mechanism available which should probably be tested more, perhaps modified, and documented: you use eval() in this content. So for example this should work: string s = "whatever" setinfo some_series --description=eval(s)