NAME
perldelta - what is new for perl v5.28.2
DESCRIPTION
This document describes differences between the 5.28.1 release and the 5.28.2 release.
If you are upgrading from an earlier release such as 5.28.0, first read perl5281delta, which describes
differences between 5.28.0 and 5.28.1.
Incompatible Changes
Any set of digits in the Common script are legal in a script run of another script
There are several sets of digits in the Common script. "[0-9]" is the most familiar. But there are also
"[\x{FF10}-\x{FF19}]" (FULLWIDTH DIGIT ZERO - FULLWIDTH DIGIT NINE), and several sets for use in
mathematical notation, such as the MATHEMATICAL DOUBLE-STRUCK DIGITs. Any of these sets should be able to
appear in script runs of, say, Greek. But the previous design overlooked all but the ASCII digits "[0-9]",
so the design was flawed. This has been fixed, so is both a bug fix and an incompatibility.
All digits in a run still have to come from the same set of ten digits.
Modules and Pragmata
Updated Modules and Pragmata
o Module::CoreList has been upgraded from version 5.20181129_28 to 5.20190419.
o PerlIO::scalar has been upgraded from version 0.29 to 0.30.
o Storable has been upgraded from version 3.08 to 3.08_01.
Platform Support
Platform-Specific Notes
Windows
The Windows Server 2003 SP1 Platform SDK build, with its early x64 compiler and tools, was accidentally
broken in Perl 5.27.9. This has now been fixed.
Mac OS X
Perl's build and testing process on Mac OS X for "-Duseshrplib" builds is now compatible with Mac OS X
System Integrity Protection (SIP).
SIP prevents binaries in /bin (and a few other places) being passed the "DYLD_LIBRARY_PATH" environment
variable. For our purposes this prevents "DYLD_LIBRARY_PATH" from being passed to the shell, which
prevents that variable being passed to the testing or build process, so running "perl" couldn't find
libperl.dylib.
To work around that, the initial build of the perl executable expects to find libperl.dylib in the build
directory, and the library path is then adjusted during installation to point to the installed library.
Selected Bug Fixes
o If an in-place edit is still in progress during global destruction and the process exit code (as stored
in $?) is zero, perl will now treat the in-place edit as successful, replacing the input file with any
output produced.
This allows code like:
perl -i -ne 'print "Foo"; last'
to replace the input file, while code like:
perl -i -ne 'print "Foo"; die'
will not.
o A regression in Perl 5.28 caused the following code to fail
close(STDIN); open(CHILD, "|wc -l")'
because the child's stdin would be closed on exec. This has now been fixed.
o "pack "u", "invalid uuencoding"" now properly NUL terminates the zero-length SV produced.
o Failing to compile a format now aborts compilation. Like other errors in sub-parses this could leave
the parser in a strange state, possibly crashing perl if compilation continued.
o See "Any set of digits in the Common script are legal in a script run of another script".
* Several modules were updated to fix minor bugs.
* Tests were fixed.
* Documentation was improved.
Changes 5.14.0:
* Unicode version 6.0 is now supported.
* Regular expressions can now be reset to the default modifiers.
* Four new regular expression modifiers, "/d", "/l" , "/u", and "/a", were
introduced.
* The substitution operators now support the modifier "/r" to work
non-destructively, leaving the original unmodified.
* Larger octals can now be specified.
* Array and hash operators can now experimentally operate directly on hard
references.
* printf-like functions now understand post-1980 size modifiers.
* Exception handling was made more reliable and consistent.
* Other enhancements and many bug fixes were made
PkgSrc:
* Fixed configuring on Mac OS X 10.7.
Plan:
(1) Change USE_PERL5=build into USE_TOOLS+=perl.
(2) Change all other USE_PERL5 into including perl5/buildlink3.mk.
Possibly, for packages that don't actually build anything with perl,
but merely require it for the perl interpreter, we can instead do:
USE_TOOLS+= perl
TOOLS_DEPMETHOD.perl= DEPENDS
but this is more verbose than simply including the perl5/buildlink3.mk
file.
Move the PERL5_REQD computation into a lang/perl5/version.mk file,
and only do the USE_PERL5 logic in bsd.pkg.use.mk if we're not using
the new tools framework. This consolidates all of the perl-handling
into two places -- lang/perl5 and mk/tools/perl.mk.
