Another Pattern Matching Question

surib has asked for the wisdom of the Perl Monks concerning the following question:

My pattern search needs to match both files:

3B40RT.2000033121.7.bin.gz
3B40RT.2000033121.7R.bin.gz (added 'R' to filename)
[download]

Original pattern search was:

$fileName =~ /3B4[0|1|2]RT\.\d{10}\.\d+\.bin/)
[download]

This worked fine until the 'R' was added for reprocessed files. I've tried:

$fileName =~ /3B4[0|1|2]RT\.\d{10}\.\w+\.bin/
$fileName =~ /3B4[0|1|2]RT\.\d{10}\.\{1,}\.bin/
$fileName =~ /3B4[0|1|2]RT\.\d{10}\.\d+R?\.bin/
$fileName =~ /3B4[0|1|2]RT\.\d{10}\.\dR?\.bin/
[download]

Any suggestions?

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