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-{2}# -*- coding: utf-8 -*-
-#--------------------------------------------------------------------------
-# perl-test-5220delta.pl
-#--------------------------------------------------------------------------
-# REF: https://metacpan.org/pod/distribution/perl/pod/perldelta.pod
-# maybe future ref: https://metacpan.org/pod/distribution/perl/pod/perl5220delta.pod
-# also: http://perltricks.com/article/165/2015/4/10/A-preview-of-Perl-5-22
-#
-#--------------------------------------------------------------------------
-# Kein-Hong Man <keinhong@gmail.com> Public Domain 20151217
-#--------------------------------------------------------------------------
-# 20151217	initial document
-# 20151218	updated tests and comments
-#--------------------------------------------------------------------------
-{0}
-{5}use{0} {6}v5.22{10};{0}			{2}# may be needed
-{0}
-{2}#--------------------------------------------------------------------------
-# New bitwise operators
-#--------------------------------------------------------------------------
-{0}
-{5}use{0} {11}feature{0} {7}'bitwise'{0}		{2}# enable feature, warning enabled
-{5}use{0} {11}experimental{0} {6}"bitwise"{10};{0}	{2}# enable feature, warning disabled
-{0}
-{2}# numerical operands
-{4}10{10}&{4}20{0}  {4}10{10}|{4}20{0}   {4}10{10}^{4}20{0} {10}~{4}10{0}
-{12}$a{10}&{6}"8"{0} {12}$a{10}|{6}"8"{0} {12}$a{10}^{6}"8"{0} {10}~{12}$a{0} {10}~{6}"8"{0}
-
-{2}# string operands
-{7}'0'{10}&.{6}"8"{0} {7}'0'{10}|.{6}"8"{0} {7}'0'{10}^.{6}"8"{0} {10}~.{7}'0'{0} {10}~.{6}"8"{0}
-{2}# the following is AMBIGUOUS, perl sees 10 and not .10 only when bitwise feature is enabled
-# so it's feature-setting-dependent, no plans to change current behaviour
-{0} {12}$a{10}&{4}.10{0}   {12}$a{10}|{4}.10{0}   {12}$a{10}^{4}.10{0}  {10}~.{12}$a{0}  {10}~{4}.10{0}
-
-{2}# assignment variants
-{12}$a{10}&={4}10{10};{0}    {12}$a{10}|={4}10{10};{0}    {12}$a{10}^={4}10{10};{0}
-{12}$b{10}&.={7}'20'{10};{0} {12}$b{10}|.={7}'20'{10};{0} {12}$b{10}^.={7}'20'{10};{0}
-{12}$c{10}&={6}"30"{10};{0}  {12}$c{10}|={6}"30"{10};{0}  {12}$c{10}^={6}"30"{10};{0}
-{12}$d{10}&.={12}$e{10};{0}   {12}$d{10}|.={12}$e{10};{0}   {12}$d{10}^.={12}$e{10};{0}
-
-{2}#--------------------------------------------------------------------------
-# New double-diamond operator
-#--------------------------------------------------------------------------
-# <<>> is like <> but each element of @ARGV will be treated as an actual file name
-{0}
-{2}# example snippet from brian d foy's blog post
-{5}while{10}({0} {10}<<>>{0} {10}){0} {10}{{0}  {2}# new, safe line input operator
-{0}	{10}...;{0}
-	{10}}{0}
-
-{2}#--------------------------------------------------------------------------
-# New \b boundaries in regular expressions
-#--------------------------------------------------------------------------
-{0}
-{29}qr/\b{gcb}/{0}
-{29}qr/\b{wb}/{0}
-{29}qr/\b{sb}/{0}
-
-{2}#--------------------------------------------------------------------------
-# Non-Capturing Regular Expression Flag
-#--------------------------------------------------------------------------
-# disables capturing and filling in $1, $2, etc
-{0}
-{6}"hello"{0} {10}=~{0} {17}/(hi|hello)/n{10};{0} {2}# $1 is not set
-{0}
-{2}#--------------------------------------------------------------------------
-# Aliasing via reference
-#--------------------------------------------------------------------------
-# Variables and subroutines can now be aliased by assigning to a reference
-{0}
-{10}\{12}$c{0} {10}={0} {10}\{12}$d{10};{0}
-{10}\&{11}x{0} {10}={0} {10}\&{11}y{10};{0}
-
-{2}# Aliasing can also be applied to foreach iterator variables
-{0}
-{5}foreach{0} {10}\{14}%hash{0} {10}({13}@array_of_hash_refs{10}){0} {10}{{0} {10}...{0} {10}}{0}
-
-{2}# example snippet from brian d foy's blog post
-{0}
-{5}use{0} {11}feature{0} {30}qw(refaliasing){10};{0}
-
-{10}\{14}%other_hash{0} {10}={0} {10}\{14}%hash{10};{0}
-
-{5}use{0} {6}v5.22{10};{0}
-{5}use{0} {11}feature{0} {30}qw(refaliasing){10};{0}
-
-{5}foreach{0} {10}\{5}my{0} {14}%hash{0} {10}({0} {13}@array_of_hashes{0} {10}){0} {10}{{0} {2}# named hash control variable
-{0}	{5}foreach{0} {5}my{0} {12}$key{0} {10}({0} {5}keys{0} {14}%hash{0} {10}){0} {10}{{0} {2}# named hash now!
-{0}		{10}...;{0}
-		{10}}{0}
-	{10}}{0}
-
-{2}#--------------------------------------------------------------------------
-# New :const subroutine attribute
-#--------------------------------------------------------------------------
-{0}
-{5}my{0} {12}$x{0} {10}={0} {4}54321{10};{0}
-{15}*INLINED{0} {10}={0} {5}sub{0} {10}:{0} {11}const{0} {10}{{0} {12}$x{0} {10}};{0}
-{12}$x{10}++;{0}
-
-{2}# more examples of attributes
-# (not 5.22 stuff, but some general examples for study, useful for
-#  handling subroutine signature and subroutine prototype highlighting)
-{0}
-{5}sub{0} {11}foo{0} {10}:{0} {11}lvalue{0} {10};{0}
-
-{5}package{0} {11}X{10};{0}
-{5}sub{0} {11}Y{10}::{11}x{0} {10}:{0} {11}lvalue{0} {10}{{0} {4}1{0} {10}}{0}
-
-{5}package{0} {11}X{10};{0}
-{5}sub{0} {11}foo{0} {10}{{0} {4}1{0} {10}}{0}
-{5}package{0} {11}Y{10};{0}
-{5}BEGIN{0} {10}{{0} {15}*bar{0} {10}={0} {10}\&{11}X{10}::{11}foo{10};{0} {10}}{0}
-{5}package{0} {11}Z{10};{0}
-{5}sub{0} {11}Y{10}::{11}bar{0} {10}:{0} {11}lvalue{0} {10};{0}
-
-{2}# built-in attributes for subroutines:
-{11}lvalue{0} {11}method{0} {5}prototype{10}(..){0} {11}locked{0} {11}const{0}
-
-{2}#--------------------------------------------------------------------------
-# Repetition in list assignment
-#--------------------------------------------------------------------------
-{0}
-{2}# example snippet from brian d foy's blog post
-{5}use{0} {6}v5.22{10};{0}
-{5}my{10}({5}undef{10},{0} {12}$card_num{10},{0} {10}({5}undef{10})x{4}3{10},{0} {12}$count{10}){0} {10}={0} {5}split{0} {17}/:/{10};{0}
-
-{10}({5}undef{10},{5}undef{10},{12}$foo{10}){0} {10}={0} {11}that_function{10}(){0}
-{2}# is equivalent to 
-{10}(({5}undef{10})x{4}2{10},{0} {12}$foo{10}){0} {10}={0} {11}that_function{10}(){0}
-
-{2}#--------------------------------------------------------------------------
-# Floating point parsing has been improved
-#--------------------------------------------------------------------------
-# Hexadecimal floating point literals
-{0}
-{2}# some hex floats from a program by Rick Regan
-# appropriated and extended from Lua 5.2.x test cases
-# tested on perl 5.22/cygwin
-{0}
-{4}0x1p-1074{10};{0}
-{4}0x3.3333333333334p-5{10};{0}
-{4}0xcc.ccccccccccdp-11{10};{0}
-{4}0x1p+1{10};{0}
-{4}0x1p-6{10};{0}
-{4}0x1.b7p-1{10};{0}
-{4}0x1.fffffffffffffp+1023{10};{0}
-{4}0x1p-1022{10};{0}
-{4}0X1.921FB4D12D84AP+1{10};{0}
-{4}0x1.999999999999ap-4{10};{0}
-
-{2}# additional test cases for characterization
-{4}0x1p-1074{10}.{0}		{2}# dot is a string operator
-{4}0x.ABCDEFp10{0}		{2}# legal, dot immediately after 0x
-{4}0x{10}.{11}p10{0}			{2}# perl allows 0x as a zero, then concat with p10 bareword
-{4}0x{10}.{11}p{0} {4}0x0{10}.{11}p{0}		{2}# dot then bareword
-{4}0x_0_.A_BC___DEF_p1_0{0}	{2}# legal hex float, underscores are mostly allowed
-{4}0x0{10}.{11}_ABCDEFp10{0}		{2}# _ABCDEFp10 is a bareword, no underscore allowed after dot
-{0}
-{2}# illegal, but does not use error highlighting
-{4}0x0p1{11}ABC{0}		{2}# illegal, highlighted as 0x0p1 abut with bareword ABC 
-{0}
-{2}# allowed to FAIL for now
-{4}0x0.ABCDEFp_10{0}		{2}# ABCDEFp_10 is a bareword, '_10' exponent not allowed
-{4}0xp{0} {4}0xp1{0} {4}0x0.0p{0}		{2}# syntax errors
-{4}0x41.65{10}.{4}65{0} 		{2}# hex dot number, but lexer now fails with 0x41.65 left as a partial hex float
-{0}
-{2}#--------------------------------------------------------------------------
-# Support for ?PATTERN? without explicit operator has been removed
-#--------------------------------------------------------------------------
-# ?PATTERN? must now be written as m?PATTERN?
-{0}
-{10}?{11}PATTERN{10}?{0}	{2}# does not work in current LexPerl anyway, NO ACTION NEEDED
-{17}m?PATTERN?{0}
-
-{2}#--------------------------------------------------------------------------
-# end of test file
-#--------------------------------------------------------------------------