Perl

Se soporta Unicode 12.1

El límite superior n que se puede especificar como cuantificador de una expresión regular en e formato {m,n}` ha sido doblado a 65534

Los Comodines en las especificaciones de valor de propiedad en Unicode son ahora soportados parcialmente

Ahora se soporta qr'\N{name}'

Ahora es posible compilar perl para usar siempre operaciones de configuración regional seguras para subprocesos

Limited variable length lookbehind in regular expression pattern matching is now experimentally supported

Use faster method to convert to UTF-8

Turkic UTF-8 locales are now seamlessly supported

Eliminate opASSIGN macro usage from core

-Drv now means something on -DDEBUGGING builds

Removed modules: Math::BigInt::CalcEmu, arybase, Locale::Code, B::Debug

Pattern delimiters now must be graphemes

Delimiters must now be graphemes

Some formerly deprecated uses of an unescaped left brace { in regular expression patterns are now illegal

Assigning non-zero to $[ is fatal

Previously deprecated sysread()/syswrite() on :utf8 handles now fatal

my() in false conditional prohibited

Fatalize $* and $#

Fatalize unqualified use of dump()

Remove File::Glob::glob()

pack() no longer can return malformed UTF-8

Any set of digits in the Common script are legal in a script run of another script

JSON::PP enable allow_nonref by default

Site paths moved from /usr/local/…/perl5 to /usr/local/…/perl5/5.30

In XS code, use of various macros dealing with UTF-8.