Several suggestions:
Here's my offering:
#!/usr/bin/perl -spi
use strict;
use vars qw( $gif $blink );
my $files;
BEGIN {
unless ((defined $gif or defined $blink) and @ARGV) {
(my $exec = $0) =~ s!.*/!!;
exit warn "usage: $exec [ -gif=[1|0] ] [ -blink=[1|0] ] files...\n
+";
}
$files = "@ARGV";
}
if (defined $gif) {
if ($gif) { s/ANIMEXTZ1\.0/ANIMEXTS1.0/, s/NOTSCAPE2\.0/NETSCAPE2.0/
+ }
else { s/ANIMEXTS1\.0/ANIMEXTZ1.0/, s/NETSCAPE2\.0/NOTSCAPE2.0/ }
}
if (defined $blink) {
if ($blink) { s/blynk/blink/ }
else { s/blink/blynk/ }
}
END {
printf "Animated GIFs are %sabled in $files\n",
("dis","en")[$gif] if defined $gif;
printf "Blinking text is %sabled in $files\n",
("dis","en")[$blink] if defined $blink;
}
I'll comment on (or explain) the code as requested.
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