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[Perl/perl5] f39dbf: XXX craig Unixish.h, doshish.h: Reorderterminatio...

From:
Karl Williamson via perl5-changes
Date:
March 24, 2021 17:47
Subject:
[Perl/perl5] f39dbf: XXX craig Unixish.h, doshish.h: Reorderterminatio...
Message ID:
Perl/perl5/push/refs/heads/smoke-me/khw-locale/8a3ec8-92d88e@github.com
  Branch: refs/heads/smoke-me/khw-locale
  Home:   https://github.com/Perl/perl5
  Commit: f39dbf2ec7ffa82e14beacedf494a5c2975b6e71
      https://github.com/Perl/perl5/commit/f39dbf2ec7ffa82e14beacedf494a5c2975b6e71
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M dosish.h
    M unixish.h

  Log Message:
  -----------
  XXX craig Unixish.h, doshish.h: Reorder terminations; simplify

The IO and memory terminations need to be after other things.  Add a
comment so that future maintainers won't make the mistakes I did.

Also refactor to that amiga os doesn't have a separate list to get out
of sync

I suspect that the amiga termination should be moved to earlier in
the sequence, but absent any evidence; I'm leaving it unchanged.


  Commit: 871d08518c7d3e870b29305f1245c6e7628c9832
      https://github.com/Perl/perl5/commit/871d08518c7d3e870b29305f1245c6e7628c9832
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Win32: Don't check folds validity

This code will check, when warnings are on, that the libc functions
return valid values.  But Windows platforms will always fail because
they have multiple divergences from the Posix standard.  The macros that
implement the case changing/folding in handy.h take extra steps to bring
Windows code more into alignment with Posix.  Those are too complicated
to easily duplicate the logic here.  The result of these checks is
looked at by our test suite, which has long, without anyone noticing,
skipped portions on Windows, even though handy.h should correct for
this.  So simply, don't do the checking under Windows, and find out what
handy.h has failed to fully correct for.


  Commit: 8d5cc2afa5998fc42f9cc362a608d31bac5164f2
      https://github.com/Perl/perl5/commit/8d5cc2afa5998fc42f9cc362a608d31bac5164f2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M lib/locale_threads.t

  Log Message:
  -----------
  XXX locale_threads


  Commit: 9b235f490e63e2f22bc37d10a332f85e7b86eea3
      https://github.com/Perl/perl5/commit/9b235f490e63e2f22bc37d10a332f85e7b86eea3
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  DEBUG_L now also looks at environment variable

Because locale initialization happens before command line processing,
one can't pass a -DL argument to enable debugging of locale
initialization.  Instead, an environment variable is read then, and is
used to enable debugging or not.  In the past, code specifically had to
test for this being set.  This commit changes that so that debugging can
automatically be enabled without having to write special code.  Future
commits will strip out those special checks.


  Commit: 1b8e86928fb45f9a646ca548e239408085fe0ea2
      https://github.com/Perl/perl5/commit/1b8e86928fb45f9a646ca548e239408085fe0ea2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Replace most #ifdef DEBUGGING lines

THe previous commit enhanced the DEBUG macros so that they contain the
logic that previously had to be done with conditional compilation
statements.  Removing them makes the code easier to read.


  Commit: ddb60a63cf82d30422e723377e8d1476af2ca3bc
      https://github.com/Perl/perl5/commit/ddb60a63cf82d30422e723377e8d1476af2ca3bc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h
    M numeric.c
    M regcomp.c
    M regexec.c
    M utfebcdic.h

  Log Message:
  -----------
  Change handy.h macro names to be C standard conformant

C reserves symbols beginning with underscores for its own use.  This
commit moves the underscore so it is trailing, which is legal.  The
symbols changed here are most of the ones in handy.h that have few uses
outside it.


  Commit: 8d7ef17b60743e6184dbf8ac5eb40e65c6ae5f9b
      https://github.com/Perl/perl5/commit/8d7ef17b60743e6184dbf8ac5eb40e65c6ae5f9b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Remove only 2 calls to an internal macro

Replace isIDFIRST_LC and isWORD_CHAR_LC isIDFIRST_LC  with slightly
faster implementations.


  Commit: 80dab020c4500d9ca075a874e9b654c7b3a8e8ea
      https://github.com/Perl/perl5/commit/80dab020c4500d9ca075a874e9b654c7b3a8e8ea
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Refactor some #ifdef's for commonality

This changes these compilation conditionals so that things in common
between Windows and other platforms are only defined once.

It changes the isIDFIRST_LC and isWORDCHAR_LC definitions for
non-Windows to match that platform superficially, though expanding to
what it previously did to.


  Commit: b963160e9e8a5734d28cdcaff8aa33b51342834a
      https://github.com/Perl/perl5/commit/b963160e9e8a5734d28cdcaff8aa33b51342834a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Add some branch predictions


  Commit: 08abb8ffa8cadeccc41cb16051541adf2c568bd7
      https://github.com/Perl/perl5/commit/08abb8ffa8cadeccc41cb16051541adf2c568bd7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: White-space, comment only


  Commit: ec6a4654e7ce20e0e3a372d53b2ff9d287969e82
      https://github.com/Perl/perl5/commit/ec6a4654e7ce20e0e3a372d53b2ff9d287969e82
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M charclass_invlists.h
    M handy.h
    M l1_char_class_tab.h
    M lib/unicore/uni_keywords.pl
    M perl.c
    M perl.h
    M regcomp.c
    M regcomp.h
    M regen/mk_PL_charclass.pl
    M regexec.c
    M sv.c
    M uni_keywords.h
    M utfebcdic.h

  Log Message:
  -----------
  Change handy.h macro names to be C standard conformant

C reserves symbols beginning with underscores for its own use.  This
commit moves the underscore so it is trailing, which is legal.  The
symbols changed here are many of the ones in handy.h that have
significant uses outside it.


  Commit: 257f6b301b2f0f3a5fe3001637684fded2f4edfa
      https://github.com/Perl/perl5/commit/257f6b301b2f0f3a5fe3001637684fded2f4edfa
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Rmv internal macro

LC_CAST_ was my attempt at generality, but I didn't realize that the
POSIX standard specifies the type that this was meant to generalize, so
there isn't any need for it.


  Commit: 2d8018d58f6eacdd8091111d981d57a20374ef80
      https://github.com/Perl/perl5/commit/2d8018d58f6eacdd8091111d981d57a20374ef80
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Refactor some internal macros

This changes the parameters etc, in preparation for further changes


  Commit: 254fcf38f694ee0d039a1b34bfa2ee136aecde3d
      https://github.com/Perl/perl5/commit/254fcf38f694ee0d039a1b34bfa2ee136aecde3d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Rmv unnecessary parameter to internal macros

The cast is required to be U8 by the POSIX standard.  There is no need
to have this added generality.


  Commit: c0ba23f82a04fbda3ca43ea255df9e0977983196
      https://github.com/Perl/perl5/commit/c0ba23f82a04fbda3ca43ea255df9e0977983196
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: #define one macro in terms of another

These two macros are equivalent as folding and lowercasing are the same
for this input domain.  Better to say so rather than to replicate the
definitions.


  Commit: ae206506c23b19505ab22e45fc9803c2eed7d31e
      https://github.com/Perl/perl5/commit/ae206506c23b19505ab22e45fc9803c2eed7d31e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Add wrapper layer macros for isalnum() ...

This adds a new set of macros, forming a lower layer to what is currently
there to wrap the character classification libc functions, isdigit()
etc, and case changing ones, tolower(), toupper().

On most platforms these expand simply to the libc function call.  But on
windows, they expand to something more complex, to bring the Windows
calls into POSIX compliance.  Previously that was achieved at the higher
level, with the result that lower level calls were broken.  This
resulted in parts of the test suite being skipped on Windows.

The current level is rewritten to use the new lower layer, with the
result that it is simpler, as the complexity is now done further down.

I thought about calling these macros is_porcelain_isalnum or something
similar to emphaisze that they are close to the bare libc version, but
thought isU8_alnum() is shorter and conveys another truth, that being
the input is assumed to be a byte, without checking.


  Commit: afa825482ebcbe4d287fc03333a78e4a2ef8e99a
      https://github.com/Perl/perl5/commit/afa825482ebcbe4d287fc03333a78e4a2ef8e99a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M vms/vms.c

  Log Message:
  -----------
  locale.c: Use new macros from the prev commit

This should result in Windows boxes now passing the locale sanity
checks.  Previously that failure would cause the test suite tests to be
skipped, and warnings generated to Windows users that actually were
invalid, as the flaws were actually compensated for in other code.


  Commit: 270fcca589a499513ff672d4e89bb4ad93737145
      https://github.com/Perl/perl5/commit/270fcca589a499513ff672d4e89bb4ad93737145
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  XXX SEE IF WORKS handy.h: Change Windows macros


  Commit: 3b1548d5faf7cb66ad2c9aa67c4bfd81a37754da
      https://github.com/Perl/perl5/commit/3b1548d5faf7cb66ad2c9aa67c4bfd81a37754da
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Add isCASED_LC

As a convenience to other code.


  Commit: 8b96a4558ff438d4ee38a77621112a7069d5bbac
      https://github.com/Perl/perl5/commit/8b96a4558ff438d4ee38a77621112a7069d5bbac
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M regexec.c

  Log Message:
  -----------
  regexec.c: Improve code

These case statements in a switch all had the same prelude for checking
if the locale is UTF-8 and handling that case separately.  A few commits
ago created macros closer to the base level.  This commit factors out
the common UTF-8 handling, and then puts the lower lever things in the
switch().  Perhaps the C optimizer will be smart enough to do this too,
but we might as well do it ourselves, now that it is convenient.


  Commit: 70cee35f7f726f687058dd56b50f3417936c2b82
      https://github.com/Perl/perl5/commit/70cee35f7f726f687058dd56b50f3417936c2b82
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M regexec.c

  Log Message:
  -----------
  regexec.c: Refactor switch default()

It seems clearer to me to have the panic at the end of the routine
instead of as the default: of a switch().


  Commit: ce3c1679f411ca4d14bfc367ac4656dfe9af5078
      https://github.com/Perl/perl5/commit/ce3c1679f411ca4d14bfc367ac4656dfe9af5078
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Declare three static arrays to be so.


  Commit: 049241fb44ab38ce8f290300d7ec9383029f0eda
      https://github.com/Perl/perl5/commit/049241fb44ab38ce8f290300d7ec9383029f0eda
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  Move some locale.c #defines to perl.h

This is in preparation for them to be used in macros from outside
locale.c


  Commit: ba866b60ffe845fa33c0dbdeb8f4abd5711c891f
      https://github.com/Perl/perl5/commit/ba866b60ffe845fa33c0dbdeb8f4abd5711c891f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  Mark newly moved symbols as private

The previous commit made certain symbols that previously were local to
locale.c now available everywhere.  Add a trailing underscore to their
names to mark them as private.


  Commit: 2e7282eac348c0dcf916229f08aa551362398116
      https://github.com/Perl/perl5/commit/2e7282eac348c0dcf916229f08aa551362398116
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M makedef.pl
    M perl.h

  Log Message:
  -----------
  Add USE_LOCALE_THREADS #define

This is in preparation for supporting configurations where there threads
are available, but the locale handling code should ignore that fact.

This stems from the unusual locale handling of z/OS, where any attempt
is ignored to change locales after the first thread is created.


  Commit: d1bc80b9fec16f29a02b31eab6d853d0eedf2635
      https://github.com/Perl/perl5/commit/d1bc80b9fec16f29a02b31eab6d853d0eedf2635
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs
    M ext/POSIX/lib/POSIX.pm
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M perl.h
    M sv.c

  Log Message:
  -----------
  Regularize HAS_POSIX_2008_LOCALE, USE_POSIX_2008_LOCALE

A platform shouldn't be required to use the Posix 2008 locale handling
functions if they are present.  Perhaps they are buggy.  So, a separate
define for using them was introduced, USE_POSIX_2008_LOCALE.  But until
this commit there were cases that were looking at the underlying
availability of the functions, not if the Configuration called for their
use.


  Commit: cf6c045aaae9c0a462fdbcf19ebf6efba6415a9b
      https://github.com/Perl/perl5/commit/cf6c045aaae9c0a462fdbcf19ebf6efba6415a9b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Change macro name

Adopt the git convention of 'porcelain' meaning without special
handling.  This makes it clear that porcelain_setlocale() is the base
level.


  Commit: 699b284ed2b6829341e40fb57b655512da784a56
      https://github.com/Perl/perl5/commit/699b284ed2b6829341e40fb57b655512da784a56
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Cast return of setlocale() to const

If they had it to do over again, the libc makers would have made the
return of this function 'const char *'.  We can cast it that way
internally to catch erroneous uses at compile time.


  Commit: 2ebe63b383a88d1b0fd7af3fb265670355ebf6c4
      https://github.com/Perl/perl5/commit/2ebe63b383a88d1b0fd7af3fb265670355ebf6c4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Create S_get_category_index()

libc locale categories, like LC_NUMERIC, are opaque integers.  This
makes it inconvenient to have table-driven code.  Instead, we have
tables that are indexed by small positive integers, which are a
compile-time mapping from the libc values.

This commit creates a run-time function to also do that mapping.  It
will first be used in the next commit.

The function does a loop through the available categories, looking for a
match.  It could be replaced by some sort of quick hash lookup, but the
largest arrays in the field have a max of 12 elements, with almost all
searches finding their quarry in the first 6.  It doesn't seem
worthwhile to me to replace a linear search of 6 elements by something
more complicated.  The design intent is this search will be used only at
the edges of the locale-handling code; once found the index is used in
future bits of the current operation.


  Commit: 6a7f2e5753ce90289d644e635ec2faabf7174b32
      https://github.com/Perl/perl5/commit/6a7f2e5753ce90289d644e635ec2faabf7174b32
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Use get_category_index()

This creates the first uses of the function added in the previous commit.

It changes the name of a function that now takes an index to have the
suffix _i to indicate its calling parameter is a category index rather
than a category.  This will become a common paradigm in this file in
later commits.

Two macros are also created to call that function; they have suffixes _c
(to indicate the parameter is a category known at compile time, and _r
(to indicate it needs to be computed at runtime).  This is in keeping
with the already existing paradigm in this file.


  Commit: dda8c498b8f5cb5f854a4d313b5fe7537525bc42
      https://github.com/Perl/perl5/commit/dda8c498b8f5cb5f854a4d313b5fe7537525bc42
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Change S_emulate_setlocale name and sig

It turns out this function is called only from places where we have the
category index already computed; so change the signature to use the
index and remove the re-calculation.

It renames it to emulate_setlocale_i() to indicate that the category
parameter is an index.

This also means, that it's very unlikely that it will be called with an
out-of-bounds value.  Remove the debugging statement for that case (but
retain the error return value).


  Commit: 73525fd88c6be70a81a7e40e0354e1b298ad49c1
      https://github.com/Perl/perl5/commit/73525fd88c6be70a81a7e40e0354e1b298ad49c1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M pod/perldelta.pod
    M pod/perldiag.pod

  Log Message:
  -----------
  locale.c: Simplify S_category_name

We can use the new function S_get_category_index() to simplify this.
Also, when I wrote it I didn't know about Perl_form(), and had
reimplemented a portion of it here; which is yanked as well.


  Commit: 0b6070c386c75c598e17e8537770e8a30c5d289d
      https://github.com/Perl/perl5/commit/0b6070c386c75c598e17e8537770e8a30c5d289d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Move unreachable code

It turns out this code, setting errno, is unreachable.  Move it to the
place where it would do some good, removing an extraneous, unreachable
return;


  Commit: 6bd58623a87d0e3fa1521fe4c85722504f318a20
      https://github.com/Perl/perl5/commit/6bd58623a87d0e3fa1521fe4c85722504f318a20
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Comment clarifications, white space

Some of these are to make future difference listings shorter

Some of the changes look like incorrect indentation here, but anticipate
future commits.


  Commit: b983c40270408cc15d94372b2d7bd7a0f8fa8b12
      https://github.com/Perl/perl5/commit/b983c40270408cc15d94372b2d7bd7a0f8fa8b12
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Separate query part of emulate_setlocale()

This splits a large function so that it is easier to comprehend, and is
in preparation for them to be separately callable.


  Commit: 8e79ec0a4434e12a1624cd5fcc520bd0e48cd86f
      https://github.com/Perl/perl5/commit/8e79ec0a4434e12a1624cd5fcc520bd0e48cd86f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Outdent previous commit

The previous commit kept the indentation level the same as it moved code
to a new function, even though an outer block was stripped off in the
process.  This was to minimize diff output.  This commit is white space
only.


  Commit: 2f27e6a3f42db36dd9a452848c00e914292a35c8
      https://github.com/Perl/perl5/commit/2f27e6a3f42db36dd9a452848c00e914292a35c8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Remove spaces around a '##' preprocessor directive

It turns out that at least my gcc preprocessor gets confused in some
contexts if spaces surround the ##.  CAT2() doesn't work for these.

It is working in this context, but future commits will introduce ones
where it won't, so this commit will help make things consistent within
this file

What seems to fail is #define f(x) (..., g(x ## y), ...) where 'x' is a
an already #defined symbol.  I want 'xy', but instead, for example if
'x' has been defined to be 1, I get '1y'


  Commit: b311f7e50f753c62d5fa978e16d4ebea7a525655
      https://github.com/Perl/perl5/commit/b311f7e50f753c62d5fa978e16d4ebea7a525655
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: #define some macros in terms of a base one

This is so changes to the lowest level automatically propagate to the
others


  Commit: 007aa77239d6e5120c9f87fc97fb6bea50b7b8fd
      https://github.com/Perl/perl5/commit/007aa77239d6e5120c9f87fc97fb6bea50b7b8fd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Create new macros for just querying locale

There are two sets of names, which immediately indicate if the result
can be relied on to be thread level or must be assumed to be global to
the whole process.  At the moment they all expand to the same thing,
since on a threadless perl, it's a don't care; and on a threaded perl,
they are all already thread-level, in the Configurations we support.

Future commits will cause the macros to diverge, and comments will be
added then.

For POSIX 2008, this commit causes queries to go directly to the query
function, avoiding S_emulate_setlocale_i() completely.


  Commit: a570540ac2a3cd6fcec4c625d51d1c951c21ae93
      https://github.com/Perl/perl5/commit/a570540ac2a3cd6fcec4c625d51d1c951c21ae93
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Generalize certain Win32 calls

The old versions were windows-specific; the changes use a more generic
macro that currently expands to the same thing, but future commits will
change that.


  Commit: e1a62ca2df3c5eff8b68ced2b1603735759085e0
      https://github.com/Perl/perl5/commit/e1a62ca2df3c5eff8b68ced2b1603735759085e0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add a convenience #define

This makes it clear if we are using an array that currently only happens
on non-querylocale systems, but that will change in future commits.


  Commit: 19ce13ebc875208a95c2fc0350a853f9c1b11eff
      https://github.com/Perl/perl5/commit/19ce13ebc875208a95c2fc0350a853f9c1b11eff
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add setlocale() return context macros

Future commits will benefit from knowing if the return value of
setlocale is to be ignored, just checked for if it worked, or the full
value is needed and can be relied on (or not) to be per-thread.


  Commit: ffec23bead2ddba3085ebd1a7503d5d295ab4301
      https://github.com/Perl/perl5/commit/ffec23bead2ddba3085ebd1a7503d5d295ab4301
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add panic check/message

This panic is done when a setlocale unexpectedly fails.


  Commit: 22caf91a69a1b0bc2f54db01da6a3b59ef0a7acd
      https://github.com/Perl/perl5/commit/22caf91a69a1b0bc2f54db01da6a3b59ef0a7acd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Use a function table to simplify code

Some locale categories require extra steps when they are changed.  This
moves that logic to a table, which gets rid of some code


  Commit: 244a33345fd4fe6ad7458e1724f2aa6fb5bb40de
      https://github.com/Perl/perl5/commit/244a33345fd4fe6ad7458e1724f2aa6fb5bb40de
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Perl_setlocale(): Same code for all param2 == NULL

Calling Perl_setlocale() with a NULL 2nd parameter returns the current
locale, rather than changing it.  Previously LC_NUMERIC and LC_ALL were
treated specially; other categories were lumped in with the code that
changes the locale.

Changing some categories involves a non-trivial amount of work.  This
commit avoids that by moving all queries to the same 'if' branch.
LC_NUMERIC and LC_ALL still have to be treated specially, but now it's
all within the same outer 'if', and the unnecessarily executing code
for when the locale changes is avoided.


  Commit: bd723f8c6dd6c31f383464f9b06195ff0daaec4c
      https://github.com/Perl/perl5/commit/bd723f8c6dd6c31f383464f9b06195ff0daaec4c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use low level macros at low level

Implementing Perl_setlocale, we can safely use the internal macros that
the public ones expand to call, without the overhead those public macros
impose (which they do to be more immune from improper calls from outside
code).


  Commit: a7fc483e056c2e463838f1010beffd20a723b759
      https://github.com/Perl/perl5/commit/a7fc483e056c2e463838f1010beffd20a723b759
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Remove exploratory code

This code was to find out, in debugging builds, if an undocumented glibc
feature worked.  There were no reports that it didn't, and so, after,
several releases, it has served its purpose.  A future commit will allow
enabling this feature as a Configuration option.


  Commit: 62fe1c466630951461ec7bf3dc26e306948550a7
      https://github.com/Perl/perl5/commit/62fe1c466630951461ec7bf3dc26e306948550a7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Expand scope of cpp conditional

This just doesn't bother with checking some locale-related stuff if not
paying attention to locales.


  Commit: f9cb4d77537757068025ebc4326b992bfd7e2291
      https://github.com/Perl/perl5/commit/f9cb4d77537757068025ebc4326b992bfd7e2291
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  locale.c: Create new convenience macro

glibc doesn't have the querylocale() function, available on some other
platforms, such as Darwin and *BSD.  However, it instead has the
equivalent functionality available through an undocumented feature.

This commit allows someone in the know to compile perl to use that
feature, and wraps its API with a macro so that the calling code doesn't
have to be aware of the different APIs of the two methods.

That macro's definition is now done in perl.h, as future commits will
use it in other files.

Since this is an undocumented feature, I am not currently documenting
this wrapper availability.  However, it has been used in the field
without complaint for a couple of releases, as follows:  A more
cumbersome substitute method continues to be used to get what it does.
But in the past both methods were tried and the program died if they
yielded different results.  Since no one has complained, I'm fairly
confident it works.  But sill I'm deferring its more general use.


  Commit: 4f9c2ecb5c7f494d563522536e0dcf47c50e5476
      https://github.com/Perl/perl5/commit/4f9c2ecb5c7f494d563522536e0dcf47c50e5476
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M intrpvar.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: querylocale() doesn't work on LC_ALL

I had misread the man pages.  This bug has been in the field for several
releases now, but most likely hasn't shown up because it's almost always
the case that the locale categories will be set to the same locale.  And
so most implementations of querylocale() would return the correct
result.

This commit works by splitting the calculation of the value of LC_ALL
from S_emulate_setlocale_i() into a separate function, and extending it
to work on querylocale() systems.  This has the added benefit of
removing tangential code from the main line, making
S_emulate_setlocale_i easier to read.

calculate_LC_ALL() is the new function, and is now called from two
places.  As part of this commit, constness is added to PL_curlocales[]

Part of this change is to keep our records of LC_ALL on non-querylocale
systems always up-to-date, which is better practice

And part of this change is temporary, marked as such, to be removed a
few commits later.


  Commit: b7474dbed29f027fc77c1b1ee0103770cdbdbd46
      https://github.com/Perl/perl5/commit/b7474dbed29f027fc77c1b1ee0103770cdbdbd46
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use setlocale() for init, not P2008

We have found bugs in the POSIX 2008 libc implementations on various
platforms.  This code, which does the initialization of locale handling
has always been very conservative, expecting possible failures due to
bugs in it our the libc implementations, and backing out if necessary to
a crippled, but workable state, if something goes wrong.

I think we should use the oldest, most stable locale implementation in
these circumstances


  Commit: 55d679461114269bcf7f746565086fc8c4a59066
      https://github.com/Perl/perl5/commit/55d679461114269bcf7f746565086fc8c4a59066
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Split aggregate LC_ALL from emulate_setlocale

This splits into a separate function the code necessary in some
Configurations to calculate LC_ALL from a potentially disparate
aggregate of categories having different locales.

This is being done just for readability, as this extensive code in the
middle of something else distracts from the main point.

A goto is hence replaced by a recursive call.


  Commit: dea2f4a91acfa181ead4cea54b2f55a90f1186d4
      https://github.com/Perl/perl5/commit/dea2f4a91acfa181ead4cea54b2f55a90f1186d4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Change internal variable name

The new name better reflects its purpose, so is less confusing


  Commit: ad8c8bac42ba03207dcdb86d9024e2977baa72d4
      https://github.com/Perl/perl5/commit/ad8c8bac42ba03207dcdb86d9024e2977baa72d4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Clean up handling of a glibc bug

This commit moves all mention of this bug to just the code that requires
it, and inlines a macro, making it easier to comprehend


  Commit: 92e4c869f6c9e3444f96e451efa2a8d40eaa569a
      https://github.com/Perl/perl5/commit/92e4c869f6c9e3444f96e451efa2a8d40eaa569a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Split ancillary from S_emulate_setlocale

This takes the code to update LC_ALL, used only in some Configurations,
out of the main line, making the main line more readable.

It also allows the removal of temporary code added a few commits back


  Commit: f0437115e4040ce9df49c025ca6679185942548f
      https://github.com/Perl/perl5/commit/f0437115e4040ce9df49c025ca6679185942548f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: locale "" can be disparate

Setting a locale "" means to get the value from environment variables.
These can set locale categories to different locales, and this needs to
be handled.  The logic before this commit only handled the disparate
case when the locale wasn't ""; but this was compensated for elsewhere.
A future commit will remove that compensation.


  Commit: 22fc4d740f35b9af85266b928d996eb5d0ca5877
      https://github.com/Perl/perl5/commit/22fc4d740f35b9af85266b928d996eb5d0ca5877
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  Split off setting locale to "" from S_emulate_setlocale

This is done for readability, to move the special casing of setting a
locale to the empty string (hence getting it from the environment) out
of the main line code.


  Commit: 5e48ca8974d9a68afb7e32395fc6219207514f61
      https://github.com/Perl/perl5/commit/5e48ca8974d9a68afb7e32395fc6219207514f61
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M sv.c

  Log Message:
  -----------
  sv.c: Duplicate more variables during cloning

These locale-related ones should be getting initialized in the new
thread, but be certain.


  Commit: 4fae33cc8e40d01925ad0e34548813e117705e95
      https://github.com/Perl/perl5/commit/4fae33cc8e40d01925ad0e34548813e117705e95
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M embedvar.h
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M proto.h
    M sv.c

  Log Message:
  -----------
  locale.c: Add fcn to hide edge case undefined behavior

The POSIX 2008 API has an edge case in that the result of most of the
functions when called with a global (as opposed to a per-thread) locale
is undefined.

The duplocale() function is the exception which will create a per-thread
locale containing the values copied from the global one.

This commit just calls duplocale, if needed, and the caller need not
concern itself with this possibility


  Commit: 42202e1be89db15ffe472174ea5903f6a8554a8e
      https://github.com/Perl/perl5/commit/42202e1be89db15ffe472174ea5903f6a8554a8e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add DEBUGGING information

These functions are called as expansions of macros.  It may be useful to
know where in the file the macro occurred.


  Commit: d195b7eaa88c9a59f55c577f96a0b6bafe2532fb
      https://github.com/Perl/perl5/commit/d195b7eaa88c9a59f55c577f96a0b6bafe2532fb
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Separate out two Win fcns from a larger one

This makes the larger one easier to understand, and prepares for
possible independent calls to the two, which are potentially useful on
their own.


  Commit: 8b7fe7d1408e630a9ab706aff593dddb5e3704fc
      https://github.com/Perl/perl5/commit/8b7fe7d1408e630a9ab706aff593dddb5e3704fc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

  Log Message:
  -----------
  POSIX.xs: Use macro to reduce complexity

This #defines a macro and uses it to populate a structure, so that
strings don't have to be typed twice.


  Commit: dbe8aea752b80ef4a3f06d36f776210d9af4a30f
      https://github.com/Perl/perl5/commit/dbe8aea752b80ef4a3f06d36f776210d9af4a30f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

  Log Message:
  -----------
  POSIX.xs: White-space only

Properly indent some nested preprocessor directives


  Commit: 7bf5bf58cabc125871c0fcd9728a2ef05e9810d4
      https://github.com/Perl/perl5/commit/7bf5bf58cabc125871c0fcd9728a2ef05e9810d4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M ext/POSIX/POSIX.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  Move code from POSIX.xs to locale.c

This avoids duplicated logic.


  Commit: 7b3c39a46365189def9f465c707653dd6a6c2eb4
      https://github.com/Perl/perl5/commit/7b3c39a46365189def9f465c707653dd6a6c2eb4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Reorder cases in a switch

This moves handling the CODESET to the end, as future commits will make
its handling more complicated.  The cases are now ordered so the
simplest (based on the direction of future commits) are first


  Commit: 8da7496b1a5c2a908bc37f5dbc8a4804550778f9
      https://github.com/Perl/perl5/commit/8da7496b1a5c2a908bc37f5dbc8a4804550778f9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Make statics of repeated string constants

These strings are (or soon will be) used in multiple places; so have
just one definition for them.


  Commit: 77d42f98732644d144a949d0b38a87e1ca35a44e
      https://github.com/Perl/perl5/commit/77d42f98732644d144a949d0b38a87e1ca35a44e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add two #defines

This makes sure that we handle having any variant of nl_langinfo() or
localeconv().


  Commit: 2c78a529a76d4380eb3a783fc59e5a3ac2c0ad09
      https://github.com/Perl/perl5/commit/2c78a529a76d4380eb3a783fc59e5a3ac2c0ad09
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Return defaults for uncomputable langinfo items

Return the values from the C locale for nl_langinfo() items that aren't
computable on this platform.  If the platform has nl_langinfo(), then
all of them are computable, but if not, some can't be computed, and
others can be, but only if there are alternative methods available on
the platform.

As part of this commit, S_my_nl_langinfo() and S_save_to_buffer() are no
longer used when USE_LOCALE is not defined, so don't compile them.


  Commit: b85075845247504365bc242af53f8b3d534a5f08
      https://github.com/Perl/perl5/commit/b85075845247504365bc242af53f8b3d534a5f08
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Rmv reimplementation of my_strftime()

Prior to this commit, there was a near duplicate copy of the code from
util.c that implements my_strftime().  This was done because the util.c
version zaps the wday field, which made it incompatible.

But it dawned on me that if the arbitrary date we use to do our
calculations were such that it was for a year in which January 1 falls
on a Sunday, then the util.c version automatically works.


  Commit: 3ca10518785006bffda71c9f576e47fe9b1be8c5
      https://github.com/Perl/perl5/commit/3ca10518785006bffda71c9f576e47fe9b1be8c5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Shorten static function name

The extra syllable(s) are unnecessary noise


  Commit: 128e4c9a467bd20afd4bf4285f8e2f2c3d4f9fb9
      https://github.com/Perl/perl5/commit/128e4c9a467bd20afd4bf4285f8e2f2c3d4f9fb9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Extend a static function

This will allow it to be used in situations where the buffer it controls
is single use, and we don't need to keep track of the size for future
calls.


  Commit: a25cb16fc8ad8e1c627520a672a5a487b6ceafc4
      https://github.com/Perl/perl5/commit/a25cb16fc8ad8e1c627520a672a5a487b6ceafc4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use typedef to simplify

This allows some preprocessor conditionals to be removed


  Commit: 1b6e61746ca792745aecd1c019a441a72f9e9c90
      https://github.com/Perl/perl5/commit/1b6e61746ca792745aecd1c019a441a72f9e9c90
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Rmv redundant cBOOL()

strEQ and && already return booleans


  Commit: 49dec917d42aa0c8ad8d793525190fda2206f32d
      https://github.com/Perl/perl5/commit/49dec917d42aa0c8ad8d793525190fda2206f32d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Fix currency symbol derivation

On platforms without nl_langinfo(), we derive the currency symbol from
localeconv().  The symbol must be tweaked to conform to nl_langinfo()
standards.  Prior to this commit, it guessed at how to tweak a rare
circumstance.  I now have seen evidence this guess was wrong, so give up
on it.

This also no longer returns just an empty string in certain cases.
nl_langinfo() itself doesn't, so conform to that.


  Commit: f0b97eeda1ed9d563b5be543f2877a74040aa9b6
      https://github.com/Perl/perl5/commit/f0b97eeda1ed9d563b5be543f2877a74040aa9b6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Don't add CP to Windows code page names

The actual name appears to be just the number for purposes of
nl_langinfo()-ish things.


  Commit: 19138b721dbabe901510adf9d087e497287fafe3
      https://github.com/Perl/perl5/commit/19138b721dbabe901510adf9d087e497287fafe3
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Don't ask a static fcn to be inlined

It's too complicated to really be inlined, and the compiler can figure
things out itself given it is a static function


  Commit: bb8770ce6a22614950c7637fd84c89d9a1bd46ce
      https://github.com/Perl/perl5/commit/bb8770ce6a22614950c7637fd84c89d9a1bd46ce
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Rmv no longer used param from static fnc

Previous commits have gotten rid of this parameter to S_save_to_buffer


  Commit: 625ad415a75e12d73adf4a26393ce0953d21008f
      https://github.com/Perl/perl5/commit/625ad415a75e12d73adf4a26393ce0953d21008f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Don't change locale if already there

Changing the locale is cheap for some categories, but expensive for
others.  Changing LC_COLLATE is most expensive, requiring recalculation
of the collation transformation mapping.

This commit checks that we aren't already in the desired locale before
changing locales. and does nothing if no change is needed.


  Commit: 80995d25132b662728db0688edb68437cc34c018
      https://github.com/Perl/perl5/commit/80995d25132b662728db0688edb68437cc34c018
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M intrpvar.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  Make three locale PL_ strings const char*

This adds some compile safety to these.


  Commit: dcae115ff889f967248f91327632b003fb980bda
      https://github.com/Perl/perl5/commit/dcae115ff889f967248f91327632b003fb980bda
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use a scratch buf; instead of resuing old

This is in preparation for the next commit


  Commit: 4eb408284e981c9f2ec652803fe029c5443fdaf8
      https://github.com/Perl/perl5/commit/4eb408284e981c9f2ec652803fe029c5443fdaf8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Make static fcn reentrant

This makes my_langinfo() reentrant by adding parameters specifying where
to store the result.

This prepares for future commits, and fixes some minor bugs for XS
writers, in that the claim was that the buffer in calling
Perl_langinfo() was safe from getting zapped until the next call to it
in the same thread.  It turns out there were cases where, because of
internal calls, the buffer did get zapped.


  Commit: 420c6c5abb9dbdda58a0ce438d07dde6cc8f6a3f
      https://github.com/Perl/perl5/commit/420c6c5abb9dbdda58a0ce438d07dde6cc8f6a3f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: langinfo: Use Windows fcn to find CODESET

There is a Windows function, available for quite a long time, that will
return the current code page.  Use this for the nl_langinfo() CODESET,
as that libc function isn't implemented on Windows.


  Commit: f561d3b28638358f5afb9f08985433f7578124b7
      https://github.com/Perl/perl5/commit/f561d3b28638358f5afb9f08985433f7578124b7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add static fcn to analyze locale codeset

It determines if the name indicates it is UTF-8 or not.  There are
several variant spellings in use, and this hides that from the the
callers.

It won't be actually used until the next commit


  Commit: 678bf814206c05a0063080bc12ebbf6c64782a4a
      https://github.com/Perl/perl5/commit/678bf814206c05a0063080bc12ebbf6c64782a4a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ext/I18N-Langinfo/Langinfo.pm
    M locale.c

  Log Message:
  -----------
  locale.c: Improve non-nl_langinfo() CODESET calc

Prior to this commit, on non-Windows platforms that don't have a
nl_langinfo() libc function, the code completely punted computation of
the CODESET item.  I have not been able to figure out how to do this,
even going to the locale definition files on disk (which may vary
anyway), but we can do a lot better than punting.

This commit adds three checks:

1) If the locale name is C or POSIX, we know the codeset

2) We can detect if a locale is UTF-8.  If it is, that is the codeset.
Many modern locales are of this ilk.

3) Failing that, some locales have the codeset appear in the name,
following a dot.

It isn't perfect, but it's a lot better than completely punting.


  Commit: d9547514c2266d10877382f2c4a0906e6f3f777f
      https://github.com/Perl/perl5/commit/d9547514c2266d10877382f2c4a0906e6f3f777f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  New signature for static fcn my_langinfo()

This commit changes the calling sequence for my_langinfo to add the
desired locale (or a sentinel to indicate to use the current locale),
and the locale category of the desired item.

This allows the function to be able to return the desired value for any
locale, avoiding some locale changes that would happen until this
commit, and hiding the need for locale changes from outside functions,
though a couple continue to do so to avoid potential multiple changes.


  Commit: 0f445250a038f1c4b1370db3fde2e2959ae1c371
      https://github.com/Perl/perl5/commit/0f445250a038f1c4b1370db3fde2e2959ae1c371
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add is_locale_utf8()

Previous commits have added the infrastructure to be able to determine
if a locale is UTF-8.  This will prove useful, and this commit adds
a function to encapsulate this information, and uses it in a couple of
places, with more to come in future commits.

This uses as a final fallback, mbtowc(), which some sources view was a
late adder to C89, and others as not really being available until C99.
Future commits will add heuristics when that function isn't available.


  Commit: 14a432a5dd61e50a5c3dab397c39f2ca36f53e03
      https://github.com/Perl/perl5/commit/14a432a5dd61e50a5c3dab397c39f2ca36f53e03
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add fcn for UTF8ness determination

get_locale_string_utf8ness_i() will determine if the string it is passed
in the locale it is passed is to be treated as UTF-8, or not.


  Commit: 0998f7cddcfe054e780840a892b60c93daf15a70
      https://github.com/Perl/perl5/commit/0998f7cddcfe054e780840a892b60c93daf15a70
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M ext/POSIX/POSIX.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXX perldelta Move POSIX::localeconv() logic to locale.c

The code currently in POSIX.xs is moved to locale.c, and reworked some
to fit in that scheme, and the logic for the workaround for the Windows
broken localeconv() is made more robust.

This is in preparation for the next commit which will use this logic
instead of (imperfectly) duplicating it.

This also creates Perl_localeconv() for direct XS calls of this
functionality.


  Commit: 50e854a676be90e36d7bda5c2152095ad086031f
      https://github.com/Perl/perl5/commit/50e854a676be90e36d7bda5c2152095ad086031f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Collapse duplicate logic into one instance

The previous commit move the logic for localeconv() into locale.c.  This
commit takes advantage of that to use it instead of repeating the logic.

On Windows, there is alternative way of finding the radix character for
systems that have a localeconv() that could cause a race.  Prior to this
commit, if that failed to find something that looked like the radix, it
returned a '?'.  Now it will drop down to using this new code, as the
likelihood of the race is small.

Notably, this commit removes the inconsistent duplicate logic that had
been used to deal with the Windows broken localeconv() bug.


  Commit: c4c772a834584c4dbc43064282a7f887fa57a917
      https://github.com/Perl/perl5/commit/c4c772a834584c4dbc43064282a7f887fa57a917
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Fix windows bug with broken localeconv()

localeconv() was broken on Windows until VS 2015.  As a workaround, this
was using my_snprintf() to find what the decimal point character is,
trying to avoid our workaround for localeconv(), which has a (slight)
chance of a race condition.

The problem is that my_snprintf() might not end up calling snprintf at
all; I didn't trace all possibilities in Windows.  So it doesn't make
for a reliable sentinel.

This commit now specifically uses libc snprintf(), and if it fails, drops
down to try localeconv().


  Commit: 252bb9bf31c05c7caea6e31a56d4e63c93b1222b
      https://github.com/Perl/perl5/commit/252bb9bf31c05c7caea6e31a56d4e63c93b1222b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M ext/POSIX/POSIX.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXXdelta Add my_strftime8()

This is like plain my_strftime(), but additionally returns an indication
of the UTF-8ness of the returned string


  Commit: 33a59861090fe7dc9b59ea6f545c43e6602f1576
      https://github.com/Perl/perl5/commit/33a59861090fe7dc9b59ea6f545c43e6602f1576
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add utf8ness return param to static fcn

my_langinfo_i() now will additionally return the UTF-8ness of the
returned string.


  Commit: 67d77f88286a25dec53bbec3326f7e4abade25ee
      https://github.com/Perl/perl5/commit/67d77f88286a25dec53bbec3326f7e4abade25ee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M ext/I18N-Langinfo/Langinfo.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXXdelta Add Perl_langinfo8()

This is like Perl_langinfo() but additionally returns information about
the UTF-8ness of the returned string.


  Commit: 516ae563d5a63bd73599556752d06be2828d291a
      https://github.com/Perl/perl5/commit/516ae563d5a63bd73599556752d06be2828d291a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add fallbacks if no mbtowc()

This add heuristics that work well for non-English locales to determine
if a locale is UTF-8 or not when mbtowc() isn't available.  It would be
a very rare compiler that didn't have that these days, but this covers
that case as best as I have been able to figure out.


  Commit: 380ee351532a909ed2a2ef5a101437e5c9f71d15
      https://github.com/Perl/perl5/commit/380ee351532a909ed2a2ef5a101437e5c9f71d15
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use Strerror(), not strerror()


  Commit: 99fc5bc4605224d025423c799271c50301685444
      https://github.com/Perl/perl5/commit/99fc5bc4605224d025423c799271c50301685444
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Refactor #ifdef's for clarity

The my_strerror() function has effectively 5 different implementations
depending on the capabilities of the platform.  Only a few lines are
common to all, the set-up and the return.  The #ifdefs obscure the
underlying logic.  So this commit separates them out into 5 different
functions, with the result that it's clear what is going on in each.


  Commit: 1c541a6857ffed9c453a03e82a80dffefc506cf2
      https://github.com/Perl/perl5/commit/1c541a6857ffed9c453a03e82a80dffefc506cf2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Avoid mojibake in "$!"

In stress testing, I discovered that the LC_CTYPE and LC_MESSAGES
locales need to be the same locale, or strerror() can return
question marks or mojibake instead of the proper message.

This commit refactors the handling of stringifying "$!" to make the
locales of both categories the same during the stringification.

Actually, I suspect it isn't the locale, but the codeset of the locale
that needs to be the same.  I suspect that if the categories were both
in different UTF-8 locales, or both in single-byte locales, that things
would work fine.  But it's cheaper to find the locale rather than the
locale's codeset, so that is what is done.


  Commit: c55c1fd5636ff83551a8f3a1790f47c02be9d76c
      https://github.com/Perl/perl5/commit/c55c1fd5636ff83551a8f3a1790f47c02be9d76c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M makedef.pl
    M mg.c
    M proto.h

  Log Message:
  -----------
  Move utf8ness calc for $! into locale.c from mg.c

locale.c has the infrastructure to handle this, so remove repeated
logic.

The removed code tried to discern better based on using script runs, but
this actually doesn't help, so is removed.


  Commit: 3aa93a7ab3d86a7d0ef532039a16229c871fcab7
      https://github.com/Perl/perl5/commit/3aa93a7ab3d86a7d0ef532039a16229c871fcab7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M mg.c

  Log Message:
  -----------
  mg.c: White-space only

Indent newly formed block from the previous commit.


  Commit: b5a2adbc7099536387f4b04a488470cb06daf262
      https://github.com/Perl/perl5/commit/b5a2adbc7099536387f4b04a488470cb06daf262
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M embedvar.h
    M intrpvar.h
    M locale.c
    M proto.h
    M sv.c

  Log Message:
  -----------
  locale.c: Rmv no longer used code; UTF8ness cache

What these functions do has been subsumed by code introduced in previous
commits, and in a more straight forward manner.

Also removed in this commit is the cache of the knowing what locales are
UTF-8 or not.  This data is now cheaper to calculate when needed, and
there is now a single entry cache, so I don't think the complexity
warrants keeping it.

It could be added back if necessary, split off from the remainder of
this commit.


  Commit: fd191a464eba80e02ef0bc493c7bc1d73f425f57
      https://github.com/Perl/perl5/commit/fd191a464eba80e02ef0bc493c7bc1d73f425f57
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Don't discard locale info in starting P2008

The program is started in the global locale, and then is converted to
the POSIX 2008 per-thread locale API.  Prior to this commit the startup
locale was discarded.  It really should be the foundation for the 2008
locales.  I don't know of any current paths through the code that this
makes a difference for, but it is a potential hole that is easy to plug.


  Commit: 3648d755f73ec7cb6253d21da63707a1feef96f8
      https://github.com/Perl/perl5/commit/3648d755f73ec7cb6253d21da63707a1feef96f8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M perl.h
    M proto.h

  Log Message:
  -----------
  Add a common locale panic macro and functions

This will make sure that all the necessary clean up gets done.


  Commit: db98af17ddb378e584bcaa3610f841720837fe39
      https://github.com/Perl/perl5/commit/db98af17ddb378e584bcaa3610f841720837fe39
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Revamp sync_locale()

This rarely used function was actually failing to do what it purported
in some Configurations.


  Commit: 5f1d3dc057355bbb51da446081bf89d731e0c9e4
      https://github.com/Perl/perl5/commit/5f1d3dc057355bbb51da446081bf89d731e0c9e4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Clean up thread_locale_init()

We can use internal functions to this file instead of the API ones here.
This commit also calls  sync_locale() to avoid repeated logic.


  Commit: 1493847c1f609e322576aa845a1705c1e7800cab
      https://github.com/Perl/perl5/commit/1493847c1f609e322576aa845a1705c1e7800cab
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Revamp switch_to_global_locale()

Prior to this commit, the global locale was not always getting populated
with the values from the thread being switched.


  Commit: 6e36d02765aecedd026e1997e5719268bc66d249
      https://github.com/Perl/perl5/commit/6e36d02765aecedd026e1997e5719268bc66d249
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Omit an extra copy

In this case in Perl_setlocale(), we can just return the plain result
from setlocale(), as, if something further needs to be done that would
destroy it, that is taken care of already at the time.

On per-thread locale platforms, the result already is in a per-category
buffer.


  Commit: 0561168ece430337a593034b1b81e541281f2056
      https://github.com/Perl/perl5/commit/0561168ece430337a593034b1b81e541281f2056
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embedvar.h
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M sv.c

  Log Message:
  -----------
  locale.c: Cache the current LC_CTYPE locale name

This is now used as a cache of length 1 to avoid having to lookup up the
UTF-8ness as often.

There was a complicated cache previously, but changes to the logic
caused that to be much less necessary, and it is no longer actually
used, and will be removed in a later commit.

But it's pretty easy to keep this single value around to cut further
down the new scheme's need to look it up


  Commit: 7300b3a78cd8b3d5db5980ceb9b7d0ff9defcbb7
      https://github.com/Perl/perl5/commit/7300b3a78cd8b3d5db5980ceb9b7d0ff9defcbb7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M intrpvar.h

  Log Message:
  -----------
  intrpvar.h: Initialize a variable

I don't believe there is a bug with this PL_numeric_name being
uninitialized, but this is an easy precaution.


  Commit: bb00d959e83831f49155a2a13ee90157182a4d0a
      https://github.com/Perl/perl5/commit/bb00d959e83831f49155a2a13ee90157182a4d0a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  Swap the ordering of two locale category indices

Perl internally uses a mapping of locale category values into a
consecutive sequence of indices starting at 0.  These are used as
indexes into arrays.  The reason is that the category numbers are
opaque, vary by platform, aren't necessarily sequential, and hence are
hard to make table driven code for.

This commit makes the LC_CTYPE index 0, and LC_NUMERIC equal to 1;
swapping them.  The reason is to cause LC_CTYPE to get done first in the
many loops through the categories.  The UTF8ness of categories is an
often needed value, and most of the time the categories will have the
same locale.  LC_CTYPE is needed to calculate the UTF8ness, and by doing
it first and caching the result, the other categories likely
automatically will use the same value, without having to recalculate.


  Commit: 9ebfbb81801bf7e5d15737b4c11d0c1dd202d63c
      https://github.com/Perl/perl5/commit/9ebfbb81801bf7e5d15737b4c11d0c1dd202d63c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use new mechanism to save/restore errno

Instead of explicitly saving the errno around debugging statements, the
new more general mechanism is used.


  Commit: 85ab6d9d7d7f070a884001311771e05446286f37
      https://github.com/Perl/perl5/commit/85ab6d9d7d7f070a884001311771e05446286f37
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Move DEBUG location info

This commit takes advantage of the new mechanism to add common DEBUGGING
code to print the __FILE__ and __LINE__ of every debugging statement.
This allows those to be removed from each statement, and have them
implicitly added.

This make things consistent, and easier to read and add new statements.


  Commit: 53695c87d8bda793691d2182a1672a5b2c92a15b
      https://github.com/Perl/perl5/commit/53695c87d8bda793691d2182a1672a5b2c92a15b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add some asserts


  Commit: 0da978c1dfa26f912461075177ce1ba5a456a078
      https://github.com/Perl/perl5/commit/0da978c1dfa26f912461075177ce1ba5a456a078
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Reorder code, rmv unneeded conditional

Previous commits have made the conditional about being able to find the
radix character unnecessary.  The called function my_langinfo_c()
handles the case properly.

This commit also makes the trivial case first in a conditional, as that
is easier to comprehend.


  Commit: 7407b1442395ee5281a38349ff2557cf9d928920
      https://github.com/Perl/perl5/commit/7407b1442395ee5281a38349ff2557cf9d928920
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Reorder 'if' branches

It's better for understandability to have positive tests than negative
ones


  Commit: f10f6f4e5aad19fc48ed9431cecf7a5a51db9350
      https://github.com/Perl/perl5/commit/f10f6f4e5aad19fc48ed9431cecf7a5a51db9350
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Refactor a static function

S_new_numeric() is called after the LC_NUMERIC category is changed, to
update various ancillary information Perl keeps.

This reorders the function so that on POSIX 2008 platforms, the numeric
object is created earlier.  This allows for fewer operations on those
platforms, as we already have the correct value in place for querying
what the radix and thousands separator characters are.

Explanatory comments are also added.


  Commit: 307de709de1055cc2cdf123d248c1f96edcc214a
      https://github.com/Perl/perl5/commit/307de709de1055cc2cdf123d248c1f96edcc214a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Change assert() into STATIC_ASSERT()


  Commit: 413b51379e57ad95def17664ec270bddcf4b2358
      https://github.com/Perl/perl5/commit/413b51379e57ad95def17664ec270bddcf4b2358
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use standard fold table for C locale

Copy the standard compiled-in ASCII fold table when the locale is C or
POSIX, instead of looping through all 256 characters and computing them.
This saves some time as well as ensures that any platform bugs become
irrelevant.


  Commit: 4e261381ac1ce0660d2bbaf92ce3b9d0e6513eea
      https://github.com/Perl/perl5/commit/4e261381ac1ce0660d2bbaf92ce3b9d0e6513eea
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add check that strxfrm didn't fail

The code failed to take into account that strxfrm() can fail for reasons
besides buffer length.  It does not return errors, and the only way to
check is to set errno to 0 beforehand, and check that it is still 0
afterwards.


  Commit: c16f8b60e8f5161a6b5bd911adb07c53cfbe7c18
      https://github.com/Perl/perl5/commit/c16f8b60e8f5161a6b5bd911adb07c53cfbe7c18
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Don't assume LC_CTYPE, LC_COLLATE are same

This code is using isCNTRL_LC which depends on LC_CTYPE to verify that
something in the LC_COLLATE locale is a control.  That only works
properly if the two locales are the same.  This commit adds code to
ensure they are.


  Commit: 3e6757eb88314bcf9a90a92630f56fb13479f200
      https://github.com/Perl/perl5/commit/3e6757eb88314bcf9a90a92630f56fb13479f200
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: strxfrm() requires LC_CTYPE eq LC_COLLATE

The libc functions strxfrm() on some platforms requires the LC_CTYPE
locale to be the same as the LC_COLLATE locale (or rather, probably that
they have the same code set, but checking for locale is cheaper).
Otherwise mojibake would result, or more likely the function will fail,
setting errno.

This commit brings the locales into alignment if necessary


  Commit: 2c599b6c9f1ce1c152eceaf470fb232134abda02
      https://github.com/Perl/perl5/commit/2c599b6c9f1ce1c152eceaf470fb232134abda02
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M Configure
    M Cross/config.sh-arm-linux
    M Cross/config.sh-arm-linux-n770
    M NetWare/config.wc
    M Porting/config.sh
    M config_h.SH
    M configure.com
    M metaconfig.h
    M plan9/config_sh.sample
    M uconfig.h
    M uconfig.sh
    M uconfig64.sh
    M win32/config.gc
    M win32/config.vc

  Log Message:
  -----------
  Configure: strxfrm_l


  Commit: f09fa4137b45c268400462df71ad57978de01d9e
      https://github.com/Perl/perl5/commit/f09fa4137b45c268400462df71ad57978de01d9e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M lib/locale.t

  Log Message:
  -----------
  XXX temp: Windows debug


  Commit: e9b9e77af2a3833124e2ce13fbfe988a1dfdfbfe
      https://github.com/Perl/perl5/commit/e9b9e77af2a3833124e2ce13fbfe988a1dfdfbfe
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use strxfrm_l() if available

This more modern version of the function doesn't require us to change
locales.


  Commit: 26b992f84bdcb56b5886e8fb92d77a1ffcc7faa8
      https://github.com/Perl/perl5/commit/26b992f84bdcb56b5886e8fb92d77a1ffcc7faa8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M mathoms.c
    M proto.h
    M sv.c

  Log Message:
  -----------
  Change name of internal function

This is in preparation for working on it; the new name, mem_collxfrm_ is
in compliance with the C Standard; the old was not.


  Commit: 08721decf97840edfd6b96ab2161edf9531b933c
      https://github.com/Perl/perl5/commit/08721decf97840edfd6b96ab2161edf9531b933c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M ext/POSIX/POSIX.xs
    M ext/POSIX/lib/POSIX.pod
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXXdelta Fix POSIX::strxfrm()

This function takes an SV containing a PV.  The encoding of that PV is
based on the locale of the LC_CTYPE locale.  It really doesn't make
sense to collate based off of the sequencing of a different locale, which
prior to this commit it would do if the LC_COLLATION locale were
different.


  Commit: d1e24718e2c66e5a1943156206b9315663a16f6d
      https://github.com/Perl/perl5/commit/d1e24718e2c66e5a1943156206b9315663a16f6d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Improve debugging for mem_collxfrm()

This prints out more information, better organized.

It also moves up the info from -DLv to plain -DL


  Commit: 3a2dbab1344abb4b440c6afabc3f0270ceb30552
      https://github.com/Perl/perl5/commit/3a2dbab1344abb4b440c6afabc3f0270ceb30552
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add debug statement for collation failure

Perhaps this should be a warning to the user that we couldn't calculate
collation info for the locale, but at least there should be a way to
get that info from a DEBUG statement


  Commit: 638d6ae706ea19484512717d3c6524f277b6fbe6
      https://github.com/Perl/perl5/commit/638d6ae706ea19484512717d3c6524f277b6fbe6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Print code point in hex, not decimal

Hex is the more familiar form


  Commit: 37f62afb382f474d671fecc87f7614b4eb8400e8
      https://github.com/Perl/perl5/commit/37f62afb382f474d671fecc87f7614b4eb8400e8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs
    M locale.c
    M perl.h

  Log Message:
  -----------
  Mark certain mutex lock macros as private

mbtowc() mblen(), and wctomb() should not be directly used by XS
writers; instead use the POSIX versions.  Don't encourage the direct use
by having public macros to aid in their use.


  Commit: 782e3d7c71b8d58e73944ae212d989b6e2f38541
      https://github.com/Perl/perl5/commit/782e3d7c71b8d58e73944ae212d989b6e2f38541
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move some code around

This is purely to make future commits have smaller real difference
listings, and involves a temporary (complemented) copy of a preprocessor
conditional.


  Commit: edd70ab7ec6e20732a7d62026eebeac45a6b7ae8
      https://github.com/Perl/perl5/commit/edd70ab7ec6e20732a7d62026eebeac45a6b7ae8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Reorder cpp branches

Disposing of the trivial case first makes things easier to read.


  Commit: 13e2a649bf7ad416a718ff053587de2aacf735a7
      https://github.com/Perl/perl5/commit/13e2a649bf7ad416a718ff053587de2aacf735a7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embedvar.h
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.h
    M sv.c

  Log Message:
  -----------
  Make the locale mutex a general semaphore

Future commits will use this new capability, and in Configurations where
no locale locking is currently necessary.


  Commit: e93a0d273c34940aab038186a3a600b42a2e796d
      https://github.com/Perl/perl5/commit/e93a0d273c34940aab038186a3a600b42a2e796d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embedvar.h
    M intrpvar.h
    M makedef.pl
    M perl.h
    M perlvars.h
    M sv.c

  Log Message:
  -----------
  Use general locale mutex for numeric operations

This commit removes the separate mutex for locking locale-related
numeric operations on threaded perls; instead using the general locale
one.  The previous commit made that a general semaphore, so now suitable
for use for this purpose as well.

This means that the locale can be locked for the duration of some
sprintf operations, longer than before this commit.  But on most modern
platforms, thread-safe locales cause this lock to expand just to a
no-op; so there is no effect on these.  And on the impacted platforms,
one is not supposed to be using locales and threads in combination, as
races can occur.  This lock is used on those perls to keep Perl's
manipulation of LC_NUMERIC thread-safe.  And for those there is also no
effect, as they already lock around those sprintf's.


  Commit: 2801ae211031c781f134e28edd45709a946d0e1d
      https://github.com/Perl/perl5/commit/2801ae211031c781f134e28edd45709a946d0e1d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  Add locale macro to wrap static-space-using fncs

Some functions return a result in a global-to-the-program buffer, or
they have an internal global buffer.  Other threads must be kept from
simultaneously using that function.  This macro is to be used for all
such ones dealing with locales.  Ideally, there would be a separate mutex
for each such buffer space.  But these functions also have to lock the
locale from changing during their execution, and there aren't that many
such functions, and they actually are rarely executed.  So a single lock
will do.

This will allow future commits to have more targeted locking for
functions that don't affect the global locale.


  Commit: 44eb8a0c9dd9a8f03b016444e6001a47e71e0f57
      https://github.com/Perl/perl5/commit/44eb8a0c9dd9a8f03b016444e6001a47e71e0f57
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  Redefine the POSIX.xs locale macros using prev commit

This commit uses the new macro introduced in the previous commit to
define the internal locale mutex macros in POSIX.xs


  Commit: 0af158cf14e802f515b58b196da9f1ba1fc83bac
      https://github.com/Perl/perl5/commit/0af158cf14e802f515b58b196da9f1ba1fc83bac
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  perl.h: Remove NL_LANGINFO_LOCK

This is needed in precisely one place in the code, so move it to there.


  Commit: d31a14d526b499206677f426ba44c1f95aa2c461
      https://github.com/Perl/perl5/commit/d31a14d526b499206677f426ba44c1f95aa2c461
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  perl.h: Remove LOCALECONV_LOCK

This is needed in just one function, in locale.c, so more it there.


  Commit: ae3e3bb2ec9591fd22dab03737613a474678561f
      https://github.com/Perl/perl5/commit/ae3e3bb2ec9591fd22dab03737613a474678561f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  XXX perlembed Add PORCELAIN_SETLOCALE_LOCK/UNLOCK

This macro is used to surround raw setlocale() calls so that the return
value in a global static buffer can be saved without interference with
other threads.

There are a few very rarely occurring instances in locale.c that are
converted to use this.  These previously could have been races.

The raw setlocales in the initialization function are not guarded, as
these happen early in the Perl process initialization, before threading
is enabled.

This is buggy if there are multiple embedded perls.  It can't be helped.
perlembed is being updated to indicate this.


  Commit: a24446d4ef7882bc429e6a88efb17cb453e6c9e5
      https://github.com/Perl/perl5/commit/a24446d4ef7882bc429e6a88efb17cb453e6c9e5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move #defining SETLOCALE_LOCK

This simplifies slightly, and will allow further simplification


  Commit: 07d90892d10708f59f4b5f93193ec9e2eec785bc
      https://github.com/Perl/perl5/commit/07d90892d10708f59f4b5f93193ec9e2eec785bc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move LOCALE_READ_LOCK #definition

To enable future simplifications


  Commit: 34c1be96580ce5606be941204909860510050d1b
      https://github.com/Perl/perl5/commit/34c1be96580ce5606be941204909860510050d1b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M perl.h
    M sv.c

  Log Message:
  -----------
  locale.c: Move #define to perl.h; use it elsewhere

 Rather than recalculate this combined conditional, do it once in
 perl.h.


  Commit: 4018de1a38223fec242518cf30541e228f8ff8e0
      https://github.com/Perl/perl5/commit/4018de1a38223fec242518cf30541e228f8ff8e0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Mitigate unsafe threaded locales

This a new set of macros and functions to do locale changing and
querying for platforms where perl is compiled with threads, but the
platform doesn't have thread-safe locale handling.

All it does is:

1) The return of setlocale() is always safely saved in a per-thread
buffer, and
2) setlocale() is protected by a mutex from other threads which are
using perl's locale functions.

This isn't much, but it might be enough to get some programs to work on
such platforms which rarely change or query the locale.


  Commit: c010c27938747b5c93e8a8f12decf3837211d1bf
      https://github.com/Perl/perl5/commit/c010c27938747b5c93e8a8f12decf3837211d1bf
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  XXX make sure comments get moved appropriately perl.h: Remove now empty block

Previous commits have left this empty except for comments.


  Commit: 868d7414bbb4d81c368350e692ac2589115ea6c8
      https://github.com/Perl/perl5/commit/868d7414bbb4d81c368350e692ac2589115ea6c8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M pp.c

  Log Message:
  -----------
  XXX pp.c: do %g print under mutex,


  Commit: e51033b60b0abacc4c7d546989e435b533211f21
      https://github.com/Perl/perl5/commit/e51033b60b0abacc4c7d546989e435b533211f21
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ebcdic_tables.h
    M embedvar.h
    M globvar.sym
    M inline.h
    M intrpvar.h
    M perl.h
    M regen/ebcdic.pl

  Log Message:
  -----------
  Make fc(), /i thread-safe on participating platforms

A long standing bug in Perl that has gone undetected is that the array
is global that is created when changing locales and tells fc() and qr//i
matching what the folds are in the new locale.

What this means is that any program only has one set of fold definitions
that apply to all threads within it, even if we claim that the locales
are thread-safe on the given platform.  One possibility for this going
undetected so long is that no one is using locales on multi-threaded
systems much.  Another possibility is that modern UTF-8 locales have the
same set of folds as any other one.

It is a simple matter to make the fold array per-thread instead of
per-process, and that solves the problem transparently to other code.

I discovered this stress-testing locale handling under threads.  That
test will be added in a future commit.


  Commit: 0e236603d0cede7db6397ebcdcc313921bd60b16
      https://github.com/Perl/perl5/commit/0e236603d0cede7db6397ebcdcc313921bd60b16
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M inline.h
    M locale.c

  Log Message:
  -----------
  XXX temp debug? locale.c, inline.h:foldEQ_locale


  Commit: 8a6193b8543f2e46a12c72801153f6c707303cb1
      https://github.com/Perl/perl5/commit/8a6193b8543f2e46a12c72801153f6c707303cb1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c comments


  Commit: d3be48e0b0aa855ae670a374ee1ba620e710e168
      https://github.com/Perl/perl5/commit/d3be48e0b0aa855ae670a374ee1ba620e710e168
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  XXX prob drop; done before anything so no races


  Commit: 723a7bfa54e4d82c40e295738326e85971f8a1a8
      https://github.com/Perl/perl5/commit/723a7bfa54e4d82c40e295738326e85971f8a1a8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Add #define for gwENVr_LOCALEr_UNLOCK

This is for functions that read the locale and environment and write to
some global space.


  Commit: 0c11833cfe455865b494bd6d50d150fc46371480
      https://github.com/Perl/perl5/commit/0c11833cfe455865b494bd6d50d150fc46371480
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h
    M time64.c

  Log Message:
  -----------
  Remove ENV_LOCALE_LOCK/UNLOCK macros

These are subsumed by gwENVr_LOCALEr_LOCK created in the previous
commit.


  Commit: f78e7e96f2900a60c00b95eb2ce7bf6b074cd0dd
      https://github.com/Perl/perl5/commit/f78e7e96f2900a60c00b95eb2ce7bf6b074cd0dd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h
    M time64.c
    M util.c

  Log Message:
  -----------
  Change ENV/LOCALE locking read macro names

The old name was confusing.


  Commit: f4e3754c57cd16dfb8db14f5773dd343612019ce
      https://github.com/Perl/perl5/commit/f4e3754c57cd16dfb8db14f5773dd343612019ce
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move some statements

So they are closer to related statements


  Commit: d4e588147b1d22ea1f8b2e9c51728c35604341cc
      https://github.com/Perl/perl5/commit/d4e588147b1d22ea1f8b2e9c51728c35604341cc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h
    M util.c

  Log Message:
  -----------
  perl.h: Finish implementing combo ENV/LOCALE mutexes

There are cases where an executing function is vulnerable to either the
locale or environment being changed by another thread.  This commit
implements macros that use mutexes to protect these critical sections.
There are two cases that exist:  one where the functions only read; and
one where they can also need exclusive control so that a competing
thread can't overwrite the returned static buffer before it is safely
copied.

5.32 had a placeholder for these, but didn't actually implement it.
Instead it locked just the ENV portion.  On modern platforms with
thread-safe locales, the locale portion is a no-op anyway, so things
worked on them.

This new commit extends that safety to other platforms.  This has long
been a vulnerability in Perl.


  Commit: 557ed91edb009d552c54504562e8ff130be355a7
      https://github.com/Perl/perl5/commit/557ed91edb009d552c54504562e8ff130be355a7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M time64.c

  Log Message:
  -----------
  time64.c: Remove no longer needed code

This code defined some macros; those are now defined by perl.h


  Commit: d68744f0afadc63161952cb8d4418766af439804
      https://github.com/Perl/perl5/commit/d68744f0afadc63161952cb8d4418766af439804
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M pp_sys.c

  Log Message:
  -----------
  XXX need to StructCopy pp_sys mutexes


  Commit: 9693aaeacca9b0282a659b2c088cf565a0339006
      https://github.com/Perl/perl5/commit/9693aaeacca9b0282a659b2c088cf565a0339006
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M win32/win32.c

  Log Message:
  -----------
  win32.c: Add mutexes around some calls

These could have races.


  Commit: 03918ab15b894f5699ed39481ce80e90534472a0
      https://github.com/Perl/perl5/commit/03918ab15b894f5699ed39481ce80e90534472a0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M util.c

  Log Message:
  -----------
  util.c: mktime needs to run under a mutex

per the Posix standard


  Commit: b8cc824496365a9dc29d455c6134d078e27f266a
      https://github.com/Perl/perl5/commit/b8cc824496365a9dc29d455c6134d078e27f266a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

  Log Message:
  -----------
  POSIX.xs env locks, check file for more


  Commit: be4493debde8f92b2f90b818ff9ba7af83e727d3
      https://github.com/Perl/perl5/commit/be4493debde8f92b2f90b818ff9ba7af83e727d3
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M cygwin/cygwin.c

  Log Message:
  -----------
  cygwin


  Commit: bd66519cdda3ce9dcca3dfb4eff574557c926a52
      https://github.com/Perl/perl5/commit/bd66519cdda3ce9dcca3dfb4eff574557c926a52
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M os2/os2.c

  Log Message:
  -----------
  os2: Use many reader lock instead of exclusive

This is just reading the environment, not changing it, so a many readers
can be accessing it at the same time.


  Commit: 14cda0a73ef22f95ace576884cf2a906a155329c
      https://github.com/Perl/perl5/commit/14cda0a73ef22f95ace576884cf2a906a155329c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.pm
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  XXX cpan PR Time-Piece: Add locks

This add mutex locking around some unsafe thread operations to make this
module thread-safe.


  Commit: 9a461e37f3df4523914a0db4d423ba8092bdc2c9
      https://github.com/Perl/perl5/commit/9a461e37f3df4523914a0db4d423ba8092bdc2c9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use foldEQ_locale() if available

This supported core function is thread-safe and knows about Perl
internals, so is preferable to the similar libc function, which is now
used only as a fallback.  This commit also bomb proofs the code by
adding an additional fallback, specified in C89, which isn't a great
substituted, but far better than nothing.


  Commit: a58be4713a90d8ceea1f5d495fe7cd9569ed452f
      https://github.com/Perl/perl5/commit/a58be4713a90d8ceea1f5d495fe7cd9569ed452f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use isSPACE, not isspace

The latter gives results that are dependent on the program's underlying
locale, and so may be inconsistent.

If locale dependence is actually desired, isSPACE_LC should be used, as
it knows about various things the module writer shouldn't have to
concern themselves with.  It is supported since 5.004


  Commit: 732bc2e3e47d7145387befcdbd39d3bbadac53fc
      https://github.com/Perl/perl5/commit/732bc2e3e47d7145387befcdbd39d3bbadac53fc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use isDIGIT, not isdigit

The latter gives results that are dependent on the program's underlying
locale, and so may be inconsistent.

If locale dependence is actually desired, isDIGIT_LC should be used, as
it knows about various things the module writer shouldn't have to
concern themselves with.  It is supported since 5.004


  Commit: 51dbe63c2b6aff8552939755f17d59b3373d8a50
      https://github.com/Perl/perl5/commit/51dbe63c2b6aff8552939755f17d59b3373d8a50
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use isUPPER, not isupper

The latter gives results that are dependent on the program's underlying
locale, and so may be inconsistent.

If locale dependence is actually desired, isUPPER_LC should be used, as
it knows about various things the module writer shouldn't have to
concern themselves with.  It is supported since 5.004


  Commit: c169f0dbbadc0c0fae8fd334756373511079f072
      https://github.com/Perl/perl5/commit/c169f0dbbadc0c0fae8fd334756373511079f072
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M pod/perlhacktips.pod

  Log Message:
  -----------
  XXX incomplete perlhacktips:


  Commit: c915edb15ed6d301fc6a06f9cab1d568f959d4cf
      https://github.com/Perl/perl5/commit/c915edb15ed6d301fc6a06f9cab1d568f959d4cf
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M dist/IO/IO.pm
    M dist/IO/IO.xs

  Log Message:
  -----------
  XXX check if using ppport IO.xs: Remove fallback code furnished by ppport


  Commit: fe61eca02adfeda0e47c1638ca000aacac542d99
      https://github.com/Perl/perl5/commit/fe61eca02adfeda0e47c1638ca000aacac542d99
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M hints/freebsd.sh

  Log Message:
  -----------
  XXX check with freebsd: hints/freebsd.sh


  Commit: abcfd35af1a4e39eecc8fdad6ecfdc535d1e5699
      https://github.com/Perl/perl5/commit/abcfd35af1a4e39eecc8fdad6ecfdc535d1e5699
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M thread.h

  Log Message:
  -----------
  thread.h: White-space, braces only


  Commit: 0502da8faef1afc4c70339fd3488d356ee41137a
      https://github.com/Perl/perl5/commit/0502da8faef1afc4c70339fd3488d356ee41137a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M thread.h

  Log Message:
  -----------
  XXX thread.h Save errno around lock/unlock


  Commit: 6b50ce10ab3dbacea7c29b3856502696c93b740b
      https://github.com/Perl/perl5/commit/6b50ce10ab3dbacea7c29b3856502696c93b740b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  XXX perl.h: Debugging mutex lock'


  Commit: b12292cbde73ec29485808a80919f4bc24e92b51
      https://github.com/Perl/perl5/commit/b12292cbde73ec29485808a80919f4bc24e92b51
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs
    M handy.h
    M iperlsys.h
    M locale.c
    M perl.h
    M regen/reentr.pl
    M regexec.c
    M util.c

  Log Message:
  -----------
  Notes


  Commit: a2b1e0ba396d526b0175f0e2b1a10744a14baf7f
      https://github.com/Perl/perl5/commit/a2b1e0ba396d526b0175f0e2b1a10744a14baf7f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs
    M locale.c
    M perl.h

  Log Message:
  -----------
  locks


  Commit: 54e0ec04fb4454010118f71e9bf4b77e6b2c547b
      https://github.com/Perl/perl5/commit/54e0ec04fb4454010118f71e9bf4b77e6b2c547b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  XXX locale.c: Kludge because C obj getting destroyed


  Commit: 478200eb7f1efd18871f7dee8ac2a116b8cf8523
      https://github.com/Perl/perl5/commit/478200eb7f1efd18871f7dee8ac2a116b8cf8523
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M .github/workflows/testsuite.yml

  Log Message:
  -----------
  Make DEBUGGING the default on CI


  Commit: fab20e72e8bfa68425706556fd4f6d824191280e
      https://github.com/Perl/perl5/commit/fab20e72e8bfa68425706556fd4f6d824191280e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M t/run/locale.t

  Log Message:
  -----------
  locale.t


  Commit: c05fb8073cfd0dbf4c8a376a24e4e03ea862a555
      https://github.com/Perl/perl5/commit/c05fb8073cfd0dbf4c8a376a24e4e03ea862a555
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M t/run/locale.t

  Log Message:
  -----------
  run/locale.t: Move init stmt

This makes it easier to add a line to turn on debugging temporarily


  Commit: 0a46f9514ddebace577b53d21d5ff725f49a5fbf
      https://github.com/Perl/perl5/commit/0a46f9514ddebace577b53d21d5ff725f49a5fbf
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M t/run/locale.t

  Log Message:
  -----------
  run/locale.t temp win


  Commit: 85c769a8f37d52ff1394fa3b0df95db8c1acef85
      https://github.com/Perl/perl5/commit/85c769a8f37d52ff1394fa3b0df95db8c1acef85
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  XXX Temp dont use querylocale()


  Commit: 7d2c36806e6c095461e7b1822cfc2ce6dad2095e
      https://github.com/Perl/perl5/commit/7d2c36806e6c095461e7b1822cfc2ce6dad2095e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M lib/locale_threads.t

  Log Message:
  -----------
  XXX debug locale_threads


  Commit: 92d88ebec4b02f3a0a101757c17b4bc5c7882d73
      https://github.com/Perl/perl5/commit/92d88ebec4b02f3a0a101757c17b4bc5c7882d73
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-24 (Wed, 24 Mar 2021)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/perlxs.pod
    M t/porting/known_pod_issues.dat

  Log Message:
  -----------
  perlxs


Compare: https://github.com/Perl/perl5/compare/8a3ec85aa9a0...92d88ebec4b0



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