[Rd] Alphanumeric tools::file_path_sans_ext() (PR#14050)

[Kurt Hornik]

>>>>> arnima  writes:

> The file_path_sans_ext() function in the 'tools' package does not handle 
> alphanumeric file extensions correctly:

>    require(tools)
>    file_path_sans_ext("song.txt")  # song, correct
>    file_path_sans_ext("song.mp3")  # song.mp3, wrong

> The help page states that "only purely alphanumeric extensions are 
> recognized", which I had expected. To fulfill this, the function body 
> should be

>    sub("([^.]+)\\.[[:alnum:]]+$", "\\1", x)

> instead of the current definition:

>    sub("([^.]+)\\.[[:alpha:]]+$", "\\1", x)

> Thanks,

> Arni

Thanks, fixed now.

Best
-k

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