Dear Matthias,
thanks for the suggestion, R-devel now warns on unused arguments by
format (both numbered and un-numbered). It seems that the new warning is
useful, often it finds cases when arguments were accidentally passed to
sprintf but had been meant for a different function.
R allows combining both numbered and un-numbered references in a single
format, even though it may be better to avoid and POSIX does not allow
that.
Best
Tomas
On 9/20/20 1:03 PM, Matthias Gondan wrote:
Dear R developers,
I am wondering if this should raise an error or a warning.
sprintf('%.f, %.f', 1, 2, 3)
[1] "1, 2"
I am aware that R has „numbered“ sprintf arguments (sprintf('%1$.f', …), and in
that case, omissing of specific arguments may be intended. But in the usual
syntax, omission of an argument is probably a mistake.
Thank you for your consideration.
Best wishes,
Matthias
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