quartiles() problem when variable name is long

[pier4r]

I do not know if it is a general limit or a limit of some functions (in particular the quartiles() function).

With modern programs I tend to write very long variable/functions names to self comment those and lowering the comments maintenance (that anyway is still needed. Comments are important).

I stumbled upon a bug or an undocumented limit of the function quartiles. If quartiles has to read a certain variable defined with a name of 39 chars, it returns a list with 5 times the variable name inside.

Where do I report the bug? Because it is a bug, at least it seems undocumented.