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Postings from July 2008
What do \Q and \E stand for?
On Tue, Jul 29, 2008 at 2:22 PM, Mark Mielke <mark@mark.mielke.cc> wrote:
> David Nicol wrote:
>
>> Whoever is compiling the module of handy preprocesses for ARGV may
>> wish to consider
>>
>> BEGIN { @ARGV = map "< \Q$_\E" @ARGV }
>>
>> as in
>>
>> cat <<EOM > SafeMagicalFootball.pm
>> package SafeMagicalFootball;
>>
>> sub import { @ARGV = map "<\Q$_\E" @ARGV }
>>
>> 1;
>> EOM
>>
>>
>
> It's a good thought that those who are very concerned about <> can use an
> ARGV preprocessor. Unfortunately, you're suggestion doesn't work. :-)
>
> Specifically, \Q...\E will prefix certain characters with '\', and this
> will make it impossible to represent file names with the same special
> characters (the theoretical filenames with '|', '<' or '>') but that are not
> escaped in the file name.
>
> Cheers,
> mark
>
> --
> Mark Mielke <mark@mielke.cc>
>
>
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