another data point: perl

[Ben Collins-Sussman <su...@collab.net>]

How Perl detects binary/text files:

"The -T and -B switches work as follows. The first block or so of the
file is examined for odd characters such as strange control codes or
metacharacters. If too many odd characters (>10%) are found, it's a -B
file, otherwise it's a -T file. Also, any file containing null in the
first block is considered a binary file."

   - from http://www.cs.cmu.edu/Web/People/rgs/pl-exp-op.html
     (found by Greg Stein)


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Re: another data point: perl

[cm...@collab.net]

Ben Collins-Sussman <su...@collab.net> writes:

> How Perl detects binary/text files:
> 
> "The -T and -B switches work as follows. The first block or so of the
> file is examined for odd characters such as strange control codes or
> metacharacters. If too many odd characters (>10%) are found, it's a -B
> file, otherwise it's a -T file. Also, any file containing null in the
> first block is considered a binary file."
> 
>    - from http://www.cs.cmu.edu/Web/People/rgs/pl-exp-op.html
>      (found by Greg Stein)

Sweet.  I was just writing the default binary detector, and the
algorithm I chose was essentially the same (I was going to get them
15% instead of 10).

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