Similar to perls qw(), however, in R spaces between args in function call
always cause an error, so qw(foo bar) wouldn't work. Workaround is either a
single string split at spaces, or unquoted elements, separated by commas.
Usage
qw(x)
qc(...)
Value
A vector of quoted words.
Arguments
x
A single string of elements to be split at whitespace chars.