Re^2: syntax question

[QM]

Update: Sorry, I should have read the thread first, toolic said the same thing.

next if substr($fld0,-1,1) eq "X";

is not exactly equivalent to

next if $fld0 =~ /X$/;

since $ at the end of a regex is a bit special. From perlre #Metacharacters:

$        Match the end of the line (or before newline at the end)