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List:       perl5-changes
Subject:    [perl.git]  branch zefram/dumb_match created. v5.27.6-32-g9e0909b218
From:       Zefram <zefram () fysh ! org>
Date:       2017-11-22 19:29:01
Message-ID: E1eHahh-0000p5-OV () git ! dc ! perl ! space
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In perl.git, the branch zefram/dumb_match has been created

<https://perl5.git.perl.org/perl.git/commitdiff/9e0909b2180c408354ce24b6c742f4b79e783d11?hp=0000000000000000000000000000000000000000>


        at  9e0909b2180c408354ce24b6c742f4b79e783d11 (commit)

- Log -----------------------------------------------------------------
commit 9e0909b2180c408354ce24b6c742f4b79e783d11
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 19:13:51 2017 +0000

    perldelta for smartmatch changes

commit fb24bb2d5fb05aef6336a32777331137e881eff5
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 18:47:40 2017 +0000

    test $swap arg for smartmatch overload

commit 1068631d8485410b2f8645d5413bbed47244a4a8
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 18:24:43 2017 +0000

    update doc in lib/ about smartmatch

commit 25233fb4d503834fd10cefc6b551240224a7f31a
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 18:08:06 2017 +0000

    canonicalise smartmatch overload truth values
    
    This enforces that a smartmatch overload returns just a truth value
    indicating whether the lhs matches the criterion, not some more complex
    kind of result that doesn't fit the smartmatch concept.

commit ab179ac766f9eda4c7f539d09c43b02b45938b5c
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 17:57:26 2017 +0000

    drop op flag for implicit smartmatch
    
    OPf_SPECIAL on a smartmatch op used to indicate that it was an implicit
    smartmatch in a "when" construct.  "when" no longer implies smartmatch, so
    drop the comment about this flag and the special handling in B::Deparse.

commit 8a0ed425bf56098485707c69bba62ee2404bef3f
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 17:51:21 2017 +0000

    test details of smartmatch overloading
    
    Test that an exception in a smartmatch overload is propagated out of
    the smartmatch operation.  Test that a smartmatch overload is called
    in scalar context for a scalar or list context smartmatch, and in void
    context for a void context smartmatch.

commit e32748c9f33b07135a5e2e4f1cdcdf22cd3a93ad
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 17:38:42 2017 +0000

    remove now-unused "M" debugging flag

commit 5f3202fa3e77c4a20de590df045af4683aaedffa
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 17:23:57 2017 +0000

    eviscerate smartmatch
    
    Regularise smartmatch's operand handling, by removing the implicit
    enreferencement and just supplying scalar context.  Eviscerate its runtime
    behaviour, by removing all the matching rules other than rhs overloading.
    Overload smartmatching in the Regexp package to perform regexp matching.
    
    There are consequential customisations to autodie, in two areas.  Firstly,
    autodie::exception objects are matchers, but autodie has been advising
    smartmatching with the exception on the lhs.  This has to change to the
    rhs, in both documentation and tests.  Secondly, it uses smartmatching as
    part of its hint mechanism.  Most of the hint examples, in documentation
    and tests, have to change to subroutines, to be portable across Perl
    versions.

commit 5e1cca32ac612f0b59508a99fbff671a693f39b9
Author: Zefram <zefram@fysh.org>
Date:   Wed Nov 22 17:16:36 2017 +0000

    update perlexperiment.pod re smartmatch
    
    Mention the big changes in 5.28, and explicate that the experiment covers
    switch as well as smartmatch.

commit 98729e54e4bb1f6f9e5e0a21c6e56461abe54dbf
Author: Zefram <zefram@fysh.org>
Date:   Tue Nov 21 20:13:03 2017 +0000

    revise all given/when documentation
    
    Update documentation that describes old behaviour of given/when (of
    various vintages) as current.  Remove duplication.  Edit the main section
    in perlsyn for clarity.  Properly document details of "break".

commit 64805db9f7c4784f6ddf4f97dcbe6fd820f05a45
Author: Zefram <zefram@fysh.org>
Date:   Tue Nov 21 18:47:09 2017 +0000

    merge switch sections in perlsyn.pod
    
    Now that the biggest parts of the "Experimental Details on given and
    when" are gone, merge the remaining part of the section into the "Switch
    Statements" section.

commit 1c71ec5e58384a564f5eb9864d03334aa772afcc
Author: Zefram <zefram@fysh.org>
Date:   Tue Nov 21 18:28:31 2017 +0000

    remove unused arg from newGIVWHENOP()
    
    The entertarg argument hasn't been used for a long time.

commit b69ef0135bfebf0c32023bcb970dbb95957b32e7
Author: Zefram <zefram@fysh.org>
Date:   Tue Nov 21 18:17:10 2017 +0000

    regularise "when"
    
    Remove from "when" the implicit enreferencement of array/hash conditions
    and the implicit smartmatch of most conditions.  Delete most of the
    documentation about behaviour of older versions of given/when, because
    explaining the now-old "when" behaviour would be excessively cumbersome
    and there's little compatibility to take advantage of.  Delete the
    documentation about differences of given/when from the Perl 6 feature,
    because the differences are now even more extensive and it's too much
    difference to sensibly explain.  Add tests of "when" in isolation.

commit 76ed45178844dff782880573017d9b7c9fbc0007
Author: Zefram <zefram@fysh.org>
Date:   Tue Nov 21 13:17:03 2017 +0000

    regularise "given"
    
    Change "given" from implicitly enreferencing array and hash topics to just
    giving the topic scalar context.  It's difficult to say whether this is a
    change of the intended behaviour or merely a bugfix, because the implicit
    enreferencement was not documented, and there were no tests exercising it.
    The documentation merely said that the argument is in scalar context,
    which correctly describes the new behaviour.  Add a documentation note
    about the old behaviour, alongside the existing notes about historical
    given/when behaviour.  Incidentally fix doc that referred to assiging
    to $_, to instead refer to aliasing.  Add tests for "given".

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