How does substitution s/// interact with Unicode and encodings?

In Perl, the substitution operator `s///` can be used to replace patterns in strings, but its interaction with Unicode and encodings requires careful handling. When working with UTF-8 encoded strings, it is essential to ensure that the patterns and replacements are also properly encoded to avoid unexpected behavior.

Perl, substitution operator, Unicode, encodings, UTF-8, string manipulation

This document provides insights into how Perl's substitution operator interacts with Unicode and various encodings, making it easier for developers to handle string manipulations appropriately.

$string = 'こんにちは';
# Japanese for "Hello"
$string =~ s/こんにちは/Hello/;
print($string);

Perl substitution operator Unicode encodings UTF-8 string manipulation