From deepayan.sarkar at gmail.com  Fri Dec 22 07:07:27 2006
From: deepayan.sarkar at gmail.com (Deepayan Sarkar)
Date: Thu, 21 Dec 2006 22:07:27 -0800
Subject: [Rd] apropos changes in r-devel: intended feature or bug?
Message-ID: <eb555e660612212207q761861a1r7e95b7bdc3a8b6eb@mail.gmail.com>

The old apropos started with:

    if (!is.character(what))
        what <- as.character(substitute(what))

The new one has:

   if (character.only)
        stopifnot(is.character(what))
    else what <- as.character(substitute(what))

i.e., the check for is.character(what) is missing. This has the effect
that 'what' can no longer be a character string generated by a
function call unless 'character.only = TRUE'. I don't think this was
intended; the change makes previously valid use invalid and I can't
think of a situation where it is useful.

-Deepayan


> apropos(paste("^", "lm", sep = ""))
[1] "paste"
There were 12 warnings (use warnings() to see them)
> warnings()
Warning messages:
1: the condition has length > 1 and only the first element will be
used in: if (is.na(pattern)) {  ...
2: the condition has length > 1 and only the first element will be
used in: if (is.na(pattern)) {  ...
3: the condition has length > 1 and only the first element will be
used in: if (is.na(pattern)) {  ...
...

> sessionInfo()
R version 2.5.0 Under development (unstable) (2006-12-21 r40280)
powerpc-unknown-linux-gnu

locale:
LC_CTYPE=bn_IN.UTF-8;[etc etc]

attached base packages:
[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "methods"
[7] "base"



[Rd] apropos changes in r-devel: intended feature or bug?
Deepayan Sarkar