Hi folks,

I'm interested in finding files by matching both filenames and 
directories via regex.  If I have:

    dir1_pat1/file1.csv
    dir2_pat1/file2.csv
    dir2_pat1/file3.txt
    dir3_pat2/file4.csv

I would like to find, for example, all csv files in directories that 
have "pat1" in their name:

    dir1_pat1/file1.csv
    dir2_pat1/file2.csv

 > list.files(path = ".", pattern = ".*pat1/.*\\.csv", recursive = T)
character(0)
 > list.files(path = ".", pattern = ".*pat1/.*\\.csv", recursive = T, 
full.names=T)
character(0)
 > list.files(path = ".", pattern = ".*\\.csv", recursive = T, full.names=T)
[1] "./dir1_pat1/file1.csv" "./dir2_pat1/file2.csv" "./dir3_pat2/file4.csv"
 > list.files(path = ".", pattern = "pat1", recursive = T, full.names=T)
character(0)

I think list.files just runs the regex pattern against the file names, 
not the full path.  I tried full.names=T, but it still matches against 
the file name only.

Suggestions are greatly appreciated.

Thank you,
Allie

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