I am not sure whether this is a bug or following gretl's specs: Putting
a string-valued series into a bundle and creating a new series 'foo'
using this 'bundled' series yields a numeric series 'foo'. I would have
expected the original string-valued series.
See the following example. The output is from latest git version on
set verbose off
open grunfeld.gdt -q
bundle Names = _(names = firmname) # put series 'firmname' into a
series foo = Names.names # construct new series from bundle
print firmname foo -o --range=1:2
1:01 General Motors 1
1:02 General Motors 1