[R] R2.1.0: Bug in list.files

[Uwe Ligges]

Steve Roberts wrote:

> R2.0.1 (MS Windows)
> 
> 
>>list.files(myloc,"*.zip",full=T)
> 
> [1] "P:/SARsoftware/Rlibraries/gnlm_0.1.zip"
> [2] "P:/SARsoftware/Rlibraries/lms2_0.2.zip"
> 
> 
> R2.1.0:
> 
> 
>>list.files(myloc,"*.zip",full=T)
> 
> Error in list.files(path, pattern, all.files, full.names, recursive) : 
>         invalid 'pattern' regular expression
 >
> Bug? or have I missed something

You missed to read the NEWS that tells you:

     o   The regular expression code is now based on that in glibc 2.3.3.
     It has stricter conformance to POSIX, so metachars such as
     { } + * may need to be escaped where before they did not
     (but could have been).


Probably you want

  list.files(pattern = "\\.zip$", full.names = TRUE)

Uwe Ligges


> Steve.
>   Dr Steve Roberts 
>   steve.roberts at manchester.ac.uk
> 
> Senior Lecturer in Medical Statistics,
> CMMCH NHS Trust and University of Manchester Biostatistics Group,
> 0161 275 5192/5764 / 0161 276 5785
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html