Given the expense of the application and that it has to ierate over thousands of images at a time, I don't want to look too far into other packages for heavy overhead. Now that I think of it, I just want to see if there are any unprintable control characters... Looking at the perldocs, I should be able to use 

$a =~ /\p{IsC}/

[download]

...which says, "crazy control characters and such." However, that seems to be matching legitimate text in some cases. So, I try 

$a !~ /\p{IsPrint}/

[download]

but that doesn't work either. Then I tried: 

$a !~ /\p{IsASCII}/

[download]

but that's also not working. I can get into the details on why these things aren't working, but I keep thinking someone's going to pipe in with a statement like, "I ran into this ages ago, and here's a routine that finds all the exceptions..."

If not, I suppose I can elaborate on how this isn't working.

In reply to Re^2: string? Or binary garbage? by argv
in thread string? Or binary garbage? by argv

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