From oehl_list@gmx.de  Tue May  7 12:15:50 2002
From: oehl_list@gmx.de (oehl_list@gmx.de)
Date: Tue, 7 May 2002 13:15:50 +0200 (MET DST)
Subject: [Rd] names(unlist(...)) may construct corrupt strings (PR#1524)
Message-ID: <200205071115.NAA07246@pubhealth.ku.dk>

names(unlist(...)) seems to be able to construct corrupt strings
detected via: two identical strings behave different in paste
observed in RW1.4.1 and RW1.5.0
pure replication code after output

Best


Jens Oehlschlgel


> l <- names(unlist(list(aa = list(bb = 1))))
> l
[1] "aa.bb"
> # this is exactly "aa.bb"
> identical(l, "aa.bb")
[1] TRUE
> 
> # BUT 
> identical(paste("aa.bb", "this should be added"), paste(l, "this should be
added"))
[1] FALSE
> 
> # this of course works
> paste("aa.bb", "this should be added")
[1] "aa.bb this should be added"
> 
> # BUT THIS FAILS
> paste(l, "this should be added")
[1] "aa.bb"



l <- names(unlist(list(aa = list(bb = 1))))
l
# this is exactly "aa.bb"
identical(l, "aa.bb")

# BUT 
identical(paste("aa.bb", "this should be added"), paste(l, "this should be
added"))

# this of course works
paste("aa.bb", "this should be added")

# BUT THIS FAILS
paste(l, "this should be added")




--please do not edit the information below--

Version:
 platform = i386-pc-mingw32
 arch = i386
 os = mingw32
 system = i386, mingw32
 status = 
 major = 1
 minor = 5.0
 year = 2002
 month = 04
 day = 29
 language = R

Windows 2000 Professional (build 2195) Service Pack 1.0

Search Path:
 .GlobalEnv, package:ctest, Autoloads, package:base

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[Rd] names(unlist(...)) may construct corrupt strings (PR#1524)
oehl_list@gmx.de