[Rd] apropos changes in r-devel: intended feature or bug?
maechler at stat.math.ethz.ch
Fri Dec 22 09:14:18 CET 2006
>>>>> "DeepS" == Deepayan Sarkar <deepayan.sarkar at gmail.com>
>>>>> on Thu, 21 Dec 2006 22:07:27 -0800 writes:
DeepS> The old apropos started with: if
DeepS> (!is.character(what)) what <-
DeepS> The new one has:
DeepS> if (character.only) stopifnot(is.character(what))
DeepS> else what <- as.character(substitute(what))
DeepS> i.e., the check for is.character(what) is
DeepS> missing. This has the effect that 'what' can no
DeepS> longer be a character string generated by a function
DeepS> call unless 'character.only = TRUE'. I don't think
DeepS> this was intended; the change makes previously valid
DeepS> use invalid and I can't think of a situation where it
DeepS> is useful.
[ Did you read the corresponding NEWS entry? ]
It now parallelizes the use in library() , require() etc,
and in particular does what the documentation says it does!
The old behavior was much less consistent and not according to
apropos(lm) was equivalent to apropos("lm")
but apropos(fit) gave an error.
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