Re: Re: Re: perl -s is evil?


No such thing as a small change
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by buckaduck (Chaplain)

on Nov 16, 2001 at 01:56 UTC ( [id://125695]=note: print w/replies, xml )

Need Help??

I can replicate that. But more to the point, I also get the following result which is closer to the original post:

(using both Perl 5.6.0 on Win95 and Perl 5.005_02 on Solaris)

% perl -sle '"Hello" =~ /(\w+)/; print $1' -- -1=foo
foo
[download]

It's just plain wrong. Not only can $1 be assigned to, but afterward it refuses to take the pattern from the regex.

buckaduck

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Re: Re: Re: Re: perl -s is evil? by jclovs (Sexton) on Nov 16, 2001 at 21:29 UTC
Well, just some fooling around with the last statement Re: Re: Re: perl -s is evil? on my linux box runing Perl 5.005_03, I decided to see what taint checking would do to this example. Wwll here's the results: `$ perl -sleT 'use diagnostics; use strict; "Hello" =~ /(\w+)/; print $ +1' -- -1=foo $` [download] While T in any other position returns `$ perl -sleT 'use diagnostics; use strict; "Hello" =~ /(\w+)/; print $ +1' -- -1=foo foo $` [download] Clovs aka jclovs	[reply] [d/l] [select]
Re5: perl -s is evil? by blakem (Monsignor) on Nov 17, 2001 at 01:43 UTC
ummm... You've got a bit of a command like goof there.... The following one-liner illustrates it. Can you figure it out? `perl -weT 'print "I like jellybeans"' Useless use of a constant in void context at -e line 1.` [download] consult perlrun for hints. ;-) -Blake	[reply] [d/l]

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