[Rd] regexp with [:upper:] (PR#11032)

[Mark.Bravington at csiro.au]

Aaargh, sorry. I thought it might be to do with Australian English...

Prof Brian Ripley wrote:
> That is correct: I suspect you meant the character class [[:upper:]]
> 
>> grep( '[[:upper:]]', letters, val=TRUE) character(0)
> 
> You asked for matches amongst :upper:, and that is what you got.
> As ?rexexp does say
> 
>       (Note that the
>       brackets in these class names are part of the symbolic
> names, and
>       must be included in addition to the brackets delimiting the    
> bracket list.) 
> 
> this appears to be a homework failure.
> 
> On Tue, 25 Mar 2008, mark.bravington at csiro.au wrote:
> 
>> Full_Name: Mark Bravington
>> Version: 2.6.2 patched
>> OS: Windows XP Pro
>> Submission from: (NULL) (140.79.22.104)
>> 
>> 
>>> grep( '[:upper:]', letters, val=T) # shurely shouldn't
> match anything ??
>> [1] "e" "p" "r" "u"
>> 
>> The converse ( '[:lower:]' and LETTERS) seems to work OK.
>> 
>> --please do not edit the information below--
>> 
>> Version:
>> platform = i386-pc-mingw32
>> arch = i386
>> os = mingw32
>> system = i386, mingw32
>> status = Patched
>> major = 2
>> minor = 6.2
>> year = 2008
>> month = 03
>> day = 21
>> svn rev = 44836
>> language = R
>> version.string = R version 2.6.2 Patched (2008-03-21 r44836)
>> 
>> Windows XP (build 2600) Service Pack 2
>> 
>> Locale:
>> 
> LC_COLLATE=English_Australia.1252;LC_CTYPE=English_Australia.1252;LC_M
>> 
> ONETARY=English_Australia.1252;LC_NUMERIC=C;LC_TIME=English_Australia.
>> 1252
>> 
>> Search Path:
>> .GlobalEnv, package:stats, package:graphics, package:grDevices,
>> package:utils, package:datasets, package:methods, Autoloads, pa
>> 
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel



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Mark Bravington
CSIRO Mathematical & Information Sciences
Marine Laboratory
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