Having written the exact code once myself, I find it disgusting :P use B::Deparse , then transform the results 
$ perl -MO=Deparse -p -i.orig -e "s/foo/bar/; ... "
BEGIN { $^I = ".orig"; }
LINE: while (defined($_ = <ARGV>)) {
    s/foo/bar/;
    die 'Unimplemented';
}
continue {
    die "-p destination: $!\n" unless print $_;
}
-e syntax OK

[download]
into a template 
#!/usr/bin/perl --

use strict;
use warnings;
Main( @ARGV );
exit( 0 );
sub Main {
    RuinSomeFilesOrig(@_);
}
sub RuinSomeFilesOrig {
    local *ARGV;
    local $^I = ".orig";
    local @ARGV = @_;

    LINE: while (defined($_ = <ARGV>)) {
        s/foo/bar/;
        ...;
    }
    continue {
        die "-p destination: $!\n" unless print $_;
    }
}

[download]
then turn it into a distribution with scriptdist :D

In reply to Re^2: perl -pi -e s'/^\s+//'g $file by Anonymous Monk
in thread perl -pi -e s'/^\s+//'g $file by david_lyon

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