bug in gsub with perl=TRUE (PR#8164)
Richard.Mott at well.ox.ac.uk wrote:
Full_Name: Richard Mott Version: 2.0.1
This version is completely outdated. Please try with a *recent* version of R when reporting bugs, in this case R-2.2.0 beta (or in worst case R-2.1.1, the current release). The bug reported below has been fixed some months ago ... Uwe Ligges
OS: Linux toad 2.6.9 #4 SMP Mon Feb 21 16:20:16 GMT 2005 x86_64 AMD Opteron(tm) Processor 848 AuthenticAMD GNU/Linux Submission from: (NULL) (129.67.46.247) gsub with perl=TRUE does not work properly. It pads/truncates the resulting string to the length of the input string: my.formula <- "log10(Biochem.ALP)^2+1 ~ Family + GENDER"
gsub("^.+~", "transformed.y ~", my.formula )
[1] "transformed.y ~ Family + GENDER"
gsub("^.+~", "transformed.y ~", my.formula, perl=TRUE )
[1] "transformed.y ~ Family + GENDER\0\006\0\0\r\377\0\0\0" # padded my.formula <- "Biochem.ALP ~ Family + GENDER"
gsub("^.+~", "transformed.y ~", my.formula, perl=TRUE )
[1] "transformed.y ~ Family + GEND" # truncated
gsub("^.+~", "transformed.y ~", my.formula )
[1] "transformed.y ~ Family + GENDER"
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