[perl5.git] / t / op / lc.t

#!./perl

# This file is intentionally encoded in latin-1.

BEGIN {
    chdir 't';
    require './test.pl';
    @INC = () unless is_miniperl();
    unshift @INC, '../lib';
    require Config; import Config;
    require './charset_tools.pl';
    require './loc_tools.pl';   # Contains find_utf8_ctype_locale()
}

use feature qw( fc );

plan tests => 134 + 4 * 256;

is(lc(undef),	   "", "lc(undef) is ''");
is(lcfirst(undef), "", "lcfirst(undef) is ''");
is(uc(undef),	   "", "uc(undef) is ''");
is(ucfirst(undef), "", "ucfirst(undef) is ''");

{
    no feature 'fc';
    is(CORE::fc(undef), "", "fc(undef) is ''");
    is(CORE::fc(''),    "", "fc('') is ''");

    local $@;
    eval { fc("eeyup") };
    like($@, qr/Undefined subroutine &main::fc/, "fc() throws an exception,");

    {
        use feature 'fc';
        local $@;
        eval { fc("eeyup") };
        ok(!$@, "...but works after requesting the feature");
    }
}

$a = "HELLO.* world";
$b = "hello.* WORLD";

is("\Q$a\E."      , "HELLO\\.\\*\\ world.", '\Q\E HELLO.* world');
is("\u$a"         , "HELLO\.\* world",      '\u');
is("\l$a"         , "hELLO\.\* world",      '\l');
is("\U$a"         , "HELLO\.\* WORLD",      '\U');
is("\L$a"         , "hello\.\* world",      '\L');
is("\F$a"         , "hello\.\* world",      '\F');

is(quotemeta($a)  , "HELLO\\.\\*\\ world",  'quotemeta');
is(ucfirst($a)    , "HELLO\.\* world",      'ucfirst');
is(lcfirst($a)    , "hELLO\.\* world",      'lcfirst');
is(uc($a)         , "HELLO\.\* WORLD",      'uc');
is(lc($a)         , "hello\.\* world",      'lc');
is(fc($a)         , "hello\.\* world",      'fc');

is("\Q$b\E."      , "hello\\.\\*\\ WORLD.", '\Q\E hello.* WORLD');
is("\u$b"         , "Hello\.\* WORLD",      '\u');
is("\l$b"         , "hello\.\* WORLD",      '\l');
is("\U$b"         , "HELLO\.\* WORLD",      '\U');
is("\L$b"         , "hello\.\* world",      '\L');
is("\F$b"         , "hello\.\* world",      '\F');

is(quotemeta($b)  , "hello\\.\\*\\ WORLD",  'quotemeta');
is(ucfirst($b)    , "Hello\.\* WORLD",      'ucfirst');
is(lcfirst($b)    , "hello\.\* WORLD",      'lcfirst');
is(uc($b)         , "HELLO\.\* WORLD",      'uc');
is(lc($b)         , "hello\.\* world",      'lc');
is(fc($b)         , "hello\.\* world",      'fc');

# \x{100} is LATIN CAPITAL LETTER A WITH MACRON; its bijective lowercase is
# \x{101}, LATIN SMALL LETTER A WITH MACRON.
# Which is also its foldcase.

$a = "\x{100}\x{101}Aa";
$b = "\x{101}\x{100}aA";

is("\Q$a\E."      , "\x{100}\x{101}Aa.", '\Q\E \x{100}\x{101}Aa');
is("\u$a"         , "\x{100}\x{101}Aa",  '\u');
is("\l$a"         , "\x{101}\x{101}Aa",  '\l');
is("\U$a"         , "\x{100}\x{100}AA",  '\U');
is("\L$a"         , "\x{101}\x{101}aa",  '\L');
is("\F$a"         , "\x{101}\x{101}aa",  '\F');

is(quotemeta($a)  , "\x{100}\x{101}Aa",  'quotemeta');
is(ucfirst($a)    , "\x{100}\x{101}Aa",  'ucfirst');
is(lcfirst($a)    , "\x{101}\x{101}Aa",  'lcfirst');
is(uc($a)         , "\x{100}\x{100}AA",  'uc');
is(lc($a)         , "\x{101}\x{101}aa",  'lc');
is(fc($a)         , "\x{101}\x{101}aa",  'fc');

is("\Q$b\E."      , "\x{101}\x{100}aA.", '\Q\E \x{101}\x{100}aA');
is("\u$b"         , "\x{100}\x{100}aA",  '\u');
is("\l$b"         , "\x{101}\x{100}aA",  '\l');
is("\U$b"         , "\x{100}\x{100}AA",  '\U');
is("\L$b"         , "\x{101}\x{101}aa",  '\L');
is("\F$b"         , "\x{101}\x{101}aa",  '\F');

is(quotemeta($b)  , "\x{101}\x{100}aA",  'quotemeta');
is(ucfirst($b)    , "\x{100}\x{100}aA",  'ucfirst');
is(lcfirst($b)    , "\x{101}\x{100}aA",  'lcfirst');
is(uc($b)         , "\x{100}\x{100}AA",  'uc');
is(lc($b)         , "\x{101}\x{101}aa",  'lc');
is(fc($b)         , "\x{101}\x{101}aa",  'fc');

# \x{DF} is LATIN SMALL LETTER SHARP S, its uppercase is SS or \x{53}\x{53};
# \x{149} is LATIN SMALL LETTER N PRECEDED BY APOSTROPHE, its uppercase is
# \x{2BC}\x{E4} or MODIFIER LETTER APOSTROPHE and N.

is(latin1_to_native("\U\x{DF}aB\x{149}cD"), latin1_to_native("SSAB\x{2BC}NCD"),
       "multicharacter uppercase");

# The \x{DF} is its own lowercase, ditto for \x{149}.
# There are no single character -> multiple characters lowercase mappings.

is(latin1_to_native("\L\x{DF}aB\x{149}cD"), latin1_to_native("\x{DF}ab\x{149}cd"),
       "multicharacter lowercase");

# \x{DF} is LATIN SMALL LETTER SHARP S, its foldcase is ss or \x{73}\x{73};
# \x{149} is LATIN SMALL LETTER N PRECEDED BY APOSTROPHE, its foldcase is
# \x{2BC}\x{6E} or MODIFIER LETTER APOSTROPHE and n.
# Note that is this further tested in t/uni/fold.t

is(latin1_to_native("\F\x{DF}aB\x{149}cD"), latin1_to_native("ssab\x{2BC}ncd"),
       "multicharacter foldcase");


# titlecase is used for \u / ucfirst.

# \x{587} is ARMENIAN SMALL LIGATURE ECH YIWN and its titlecase is
# \x{535}\x{582} ARMENIAN CAPITAL LETTER ECH + ARMENIAN SMALL LETTER YIWN
# while its lowercase is 
# \x{587} itself
# and its uppercase is
# \x{535}\x{552} ARMENIAN CAPITAL LETTER ECH + ARMENIAN CAPITAL LETTER YIWN
# The foldcase is \x{565}\x{582} ARMENIAN SMALL LETTER ECH + ARMENIAN SMALL LETTER YIWN

$a = "\x{587}";

is("\L\x{587}" , "\x{587}",        "ligature lowercase");
is("\u\x{587}" , "\x{535}\x{582}", "ligature titlecase");
is("\U\x{587}" , "\x{535}\x{552}", "ligature uppercase");
is("\F\x{587}" , "\x{565}\x{582}", "ligature foldcase");

# mktables had problems where many-to-one case mappings didn't work right.
# The lib/uni/fold.t should give the fourth folding, "casefolding", a good
# workout.
# \x{01C4} is LATIN CAPITAL LETTER DZ WITH CARON
# \x{01C5} is LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON
# \x{01C6} is LATIN SMALL LETTER DZ WITH CARON
# \x{03A3} is GREEK CAPITAL LETTER SIGMA
# \x{03C2} is GREEK SMALL LETTER FINAL SIGMA
# \x{03C3} is GREEK SMALL LETTER SIGMA

is(lc("\x{1C4}") , "\x{1C6}",      "U+01C4 lc is U+01C6");
is(lc("\x{1C5}") , "\x{1C6}",      "U+01C5 lc is U+01C6, too");

is(ucfirst("\x{3C2}") , "\x{3A3}", "U+03C2 ucfirst is U+03A3");
is(ucfirst("\x{3C3}") , "\x{3A3}", "U+03C3 ucfirst is U+03A3, too");

is(uc("\x{1C5}") , "\x{1C4}",      "U+01C5 uc is U+01C4");
is(uc("\x{1C6}") , "\x{1C4}",      "U+01C6 uc is U+01C4, too");

# #18107: A host of bugs involving [ul]c{,first}. AMS 20021106
$a = "\x{3c3}foo.bar"; # \x{3c3} == GREEK SMALL LETTER SIGMA.
$b = "\x{3a3}FOO.BAR"; # \x{3a3} == GREEK CAPITAL LETTER SIGMA.

($c = $b) =~ s/(\w+)/lc($1)/ge;
is($c , $a, "Using s///e to change case.");

($c = $a) =~ s/(\p{IsWord}+)/uc($1)/ge;
is($c , $b, "Using s///e to change case.");

($c = $a) =~ s/(\p{IsWord}+)/fc($1)/ge;
is($c , $a, "Using s///e to foldcase.");

($c = $b) =~ s/(\p{IsWord}+)/lcfirst($1)/ge;
is($c , "\x{3c3}FOO.bAR", "Using s///e to change case.");

($c = $a) =~ s/(\p{IsWord}+)/ucfirst($1)/ge;
is($c , "\x{3a3}foo.Bar", "Using s///e to change case.");

# #18931: perl5.8.0 bug in \U..\E processing
# Test case from Nicholas Clark.
for my $a (0,1) {
    $_ = 'abcdefgh';
    $_ .= chr 256;
    chop;
    /(.*)/;
    is(uc($1), "ABCDEFGH", "[perl #18931]");
}

{
    foreach (0, 1) {
	$a = v10.v257;
	chop $a;
	$a =~ s/^(\s*)(\w*)/$1\u$2/;
	is($a, v10, "[perl #18857]");
    } 
}


# [perl #38619] Bug in lc and uc (interaction between UTF-8, substr, and lc/uc)

for ("a\x{100}", "xyz\x{100}") {
    is(substr(uc($_), 0), uc($_), "[perl #38619] uc");
}
for ("A\x{100}", "XYZ\x{100}") {
    is(substr(lc($_), 0), lc($_), "[perl #38619] lc");
}
for ("a\x{100}", "ßyz\x{100}") { # ß to Ss (different length)
    is(substr(ucfirst($_), 0), ucfirst($_), "[perl #38619] ucfirst");
}

#fc() didn't exist back then, but coverage is coverage.
for ("a\x{100}", "ßyz\x{100}", "xyz\x{100}", "XYZ\x{100}") { # ß to Ss (different length)
    is(substr(fc($_), 0), fc($_), "[perl #38619] fc");
}

# Related to [perl #38619]
# the original report concerns PERL_MAGIC_utf8.
# these cases concern PERL_MAGIC_regex_global.

for (map { $_ } "a\x{100}", "abc\x{100}", "\x{100}") {
    chop; # get ("a", "abc", "") in utf8
    my $return =  uc($_) =~ /\G(.?)/g;
    my $result = $return ? $1 : "not";
    my $expect = (uc($_) =~ /(.?)/g)[0];
    is($return, 1,       "[perl #38619]");
    is($result, $expect, "[perl #38619]");
}

for (map { $_ } "A\x{100}", "ABC\x{100}", "\x{100}") {
    chop; # get ("A", "ABC", "") in utf8
    my $return =  lc($_) =~ /\G(.?)/g;
    my $result = $return ? $1 : "not";
    my $expect = (lc($_) =~ /(.?)/g)[0];
    is($return, 1,       "[perl #38619]");
    is($result, $expect, "[perl #38619]");
}

for (map { $_ } "A\x{100}", "ABC\x{100}", "\x{100}") {
    chop; # get ("A", "ABC", "") in utf8
    my $return =  fc($_) =~ /\G(.?)/g;
    my $result = $return ? $1 : "not";
    my $expect = (fc($_) =~ /(.?)/g)[0];
    is($return, 1,       "[perl #38619]");
    is($result, $expect, "[perl #38619]");
}

for (1, 4, 9, 16, 25) {
    is(uc "\x{03B0}" x $_, "\x{3a5}\x{308}\x{301}" x $_,
       'uc U+03B0 grows threefold');

    is(lc "\x{0130}" x $_, "i\x{307}" x $_, 'lc U+0130 grows');

    is(fc "\x{03B0}" x $_, "\x{3C5}\x{308}\x{301}" x $_,
       'fc U+03B0 grows threefold');
}

# bug #43207
my $temp = "HellO";
for ("$temp") {
    lc $_;
    is($_, "HellO", '[perl #43207] lc($_) modifying $_');
}
for ("$temp") {
    fc $_;
    is($_, "HellO", '[perl #43207] fc($_) modifying $_');
}
for ("$temp") {
    uc $_;
    is($_, "HellO", '[perl #43207] uc($_) modifying $_');
}
for ("$temp") {
    ucfirst $_;
    is($_, "HellO", '[perl #43207] ucfirst($_) modifying $_');
}
for ("$temp") {
    lcfirst $_;
    is($_, "HellO", '[perl #43207] lcfirst($_) modifying $_');
}

# new in Unicode 5.1.0
is(lc("\x{1E9E}"), "\x{df}", "lc(LATIN CAPITAL LETTER SHARP S)");

{
    use feature 'unicode_strings';
    use bytes;
    is(lc("\xc0"), "\xc0", "lc of above-ASCII Latin1 is itself under use bytes");
    is(lcfirst("\xc0"), "\xc0", "lcfirst of above-ASCII Latin1 is itself under use bytes");
    is(uc("\xe0"), "\xe0", "uc of above-ASCII Latin1 is itself under use bytes");
    is(ucfirst("\xe0"), "\xe0", "ucfirst of above-ASCII Latin1 is itself under use bytes");
}

# Brought up in ticket #117855: Constant folding applied to uc() should use
# the right set of hints.
fresh_perl_like(<<'constantfolding', qr/^(\d+),\1\z/, {},
    my $function = "uc";
    my $char = "\xff";
    {
        use feature 'unicode_strings';
        print ord uc($char), ",",
              ord eval "$function('$char')", "\n";
    }
constantfolding
    'folded uc() in string eval uses the right hints');

# In-place lc/uc should not corrupt string buffers when given a non-utf8-
# flagged thingy that stringifies to utf8
$h{k} = bless[], "\x{3b0}\x{3b0}\x{3b0}bcde"; # U+03B0 grows with uc()
   # using delete marks it as TEMP, so uc-in-place is permitted
like uc delete $h{k}, qr "^(?:\x{3a5}\x{308}\x{301}){3}BCDE=ARRAY\(.*\)",
    'uc(TEMP ref) does not produce a corrupt string';
$h{k} = bless[], "\x{130}bcde"; # U+0130 grows with lc()
   # using delete marks it as TEMP, so uc-in-place is permitted
like lc delete $h{k}, qr "^i\x{307}bcde=array\(.*\)",
    'lc(TEMP ref) does not produce a corrupt string';


my $utf8_locale = find_utf8_ctype_locale();

SKIP: {
    skip 'Can\'t find a UTF-8 locale', 4*256 unless defined $utf8_locale;

    eval { require POSIX; import POSIX 'locale_h'; };
    unless (defined &POSIX::LC_CTYPE) {
        skip "no POSIX (maybe no Fcntl, or no dynamic loading)", 4*256;
    }

    use feature qw( unicode_strings );

    no locale;

    my @unicode_lc;
    my @unicode_uc;
    my @unicode_lcfirst;
    my @unicode_ucfirst;

    # Get all the values outside of 'locale'
    for my $i (0 .. 255) {
        push @unicode_lc, lc(chr $i);
        push @unicode_uc, uc(chr $i);
        push @unicode_lcfirst, lcfirst(chr $i);
        push @unicode_ucfirst, ucfirst(chr $i);
    }

    use locale;
    setlocale(LC_CTYPE, $utf8_locale);

    for my $i (0 .. 255) {
        is(lc(chr $i), $unicode_lc[$i], "In a UTF-8 locale, lc(chr $i) is the same as official Unicode");
        is(uc(chr $i), $unicode_uc[$i], "In a UTF-8 locale, uc(chr $i) is the same as official Unicode");
        is(lcfirst(chr $i), $unicode_lcfirst[$i], "In a UTF-8 locale, lcfirst(chr $i) is the same as official Unicode");
        is(ucfirst(chr $i), $unicode_ucfirst[$i], "In a UTF-8 locale, ucfirst(chr $i) is the same as official Unicode");
    }
}
Commit	Line	Data
b0f2b690 JH	1	#!./perl
b0f2b690 JH	2
838f2281 BF	3	# This file is intentionally encoded in latin-1.
838f2281 BF	4
3a2263fe RGS	5	BEGIN {
3a2263fe RGS	6	chdir 't';
3ffecb73 FC	7	require './test.pl';
	8	@INC = () unless is_miniperl();
	9	unshift @INC, '../lib';
31f05a37	10	require Config; import Config;
3ffecb73	11	require './charset_tools.pl';
9b0711ee	12	require './loc_tools.pl'; # Contains find_utf8_ctype_locale()
983ffd37	13	}
b0f2b690	14
838f2281 BF	15	use feature qw( fc );
838f2281 BF	16
31f05a37	17	plan tests => 134 + 4 * 256;
c6502f5c RGS	18
	19	is(lc(undef), "", "lc(undef) is ''");
	20	is(lcfirst(undef), "", "lcfirst(undef) is ''");
	21	is(uc(undef), "", "uc(undef) is ''");
	22	is(ucfirst(undef), "", "ucfirst(undef) is ''");
3a2263fe	23
838f2281 BF	24	{
	25	no feature 'fc';
	26	is(CORE::fc(undef), "", "fc(undef) is ''");
	27	is(CORE::fc(''), "", "fc('') is ''");
	28
	29	local $@;
	30	eval { fc("eeyup") };
	31	like($@, qr/Undefined subroutine &main::fc/, "fc() throws an exception,");
	32
	33	{
	34	use feature 'fc';
	35	local $@;
	36	eval { fc("eeyup") };
	37	ok(!$@, "...but works after requesting the feature");
	38	}
	39	}
	40
b0f2b690 JH	41	$a = "HELLO.* world";
	42	$b = "hello.* WORLD";
	43
3a2263fe RGS	44	is("\Q$a\E." , "HELLO\\.\\\\ world.", '\Q\E HELLO. world');
	45	is("\u$a" , "HELLO\.\* world", '\u');
	46	is("\l$a" , "hELLO\.\* world", '\l');
	47	is("\U$a" , "HELLO\.\* WORLD", '\U');
	48	is("\L$a" , "hello\.\* world", '\L');
838f2281	49	is("\F$a" , "hello\.\* world", '\F');
3a2263fe RGS	50
	51	is(quotemeta($a) , "HELLO\\.\\*\\ world", 'quotemeta');
	52	is(ucfirst($a) , "HELLO\.\* world", 'ucfirst');
	53	is(lcfirst($a) , "hELLO\.\* world", 'lcfirst');
	54	is(uc($a) , "HELLO\.\* WORLD", 'uc');
	55	is(lc($a) , "hello\.\* world", 'lc');
838f2281	56	is(fc($a) , "hello\.\* world", 'fc');
3a2263fe RGS	57
	58	is("\Q$b\E." , "hello\\.\\\\ WORLD.", '\Q\E hello. WORLD');
	59	is("\u$b" , "Hello\.\* WORLD", '\u');
	60	is("\l$b" , "hello\.\* WORLD", '\l');
	61	is("\U$b" , "HELLO\.\* WORLD", '\U');
	62	is("\L$b" , "hello\.\* world", '\L');
838f2281	63	is("\F$b" , "hello\.\* world", '\F');
3a2263fe RGS	64
	65	is(quotemeta($b) , "hello\\.\\*\\ WORLD", 'quotemeta');
	66	is(ucfirst($b) , "Hello\.\* WORLD", 'ucfirst');
	67	is(lcfirst($b) , "hello\.\* WORLD", 'lcfirst');
	68	is(uc($b) , "HELLO\.\* WORLD", 'uc');
	69	is(lc($b) , "hello\.\* world", 'lc');
838f2281	70	is(fc($b) , "hello\.\* world", 'fc');
983ffd37 JH	71
983ffd37 JH	72	# \x{100} is LATIN CAPITAL LETTER A WITH MACRON; its bijective lowercase is
7e965bc5	73	# \x{101}, LATIN SMALL LETTER A WITH MACRON.
838f2281	74	# Which is also its foldcase.
b0f2b690	75
2533d950 JH	76	$a = "\x{100}\x{101}Aa";
2533d950 JH	77	$b = "\x{101}\x{100}aA";
b0f2b690	78
3a2263fe RGS	79	is("\Q$a\E." , "\x{100}\x{101}Aa.", '\Q\E \x{100}\x{101}Aa');
	80	is("\u$a" , "\x{100}\x{101}Aa", '\u');
	81	is("\l$a" , "\x{101}\x{101}Aa", '\l');
	82	is("\U$a" , "\x{100}\x{100}AA", '\U');
	83	is("\L$a" , "\x{101}\x{101}aa", '\L');
838f2281	84	is("\F$a" , "\x{101}\x{101}aa", '\F');
3a2263fe RGS	85
	86	is(quotemeta($a) , "\x{100}\x{101}Aa", 'quotemeta');
	87	is(ucfirst($a) , "\x{100}\x{101}Aa", 'ucfirst');
	88	is(lcfirst($a) , "\x{101}\x{101}Aa", 'lcfirst');
	89	is(uc($a) , "\x{100}\x{100}AA", 'uc');
	90	is(lc($a) , "\x{101}\x{101}aa", 'lc');
838f2281	91	is(fc($a) , "\x{101}\x{101}aa", 'fc');
3a2263fe RGS	92
	93	is("\Q$b\E." , "\x{101}\x{100}aA.", '\Q\E \x{101}\x{100}aA');
	94	is("\u$b" , "\x{100}\x{100}aA", '\u');
	95	is("\l$b" , "\x{101}\x{100}aA", '\l');
	96	is("\U$b" , "\x{100}\x{100}AA", '\U');
	97	is("\L$b" , "\x{101}\x{101}aa", '\L');
838f2281	98	is("\F$b" , "\x{101}\x{101}aa", '\F');
3a2263fe RGS	99
	100	is(quotemeta($b) , "\x{101}\x{100}aA", 'quotemeta');
	101	is(ucfirst($b) , "\x{100}\x{100}aA", 'ucfirst');
	102	is(lcfirst($b) , "\x{101}\x{100}aA", 'lcfirst');
	103	is(uc($b) , "\x{100}\x{100}AA", 'uc');
	104	is(lc($b) , "\x{101}\x{101}aa", 'lc');
838f2281	105	is(fc($b) , "\x{101}\x{101}aa", 'fc');
983ffd37 JH	106
	107	# \x{DF} is LATIN SMALL LETTER SHARP S, its uppercase is SS or \x{53}\x{53};
	108	# \x{149} is LATIN SMALL LETTER N PRECEDED BY APOSTROPHE, its uppercase is
	109	# \x{2BC}\x{E4} or MODIFIER LETTER APOSTROPHE and N.
	110
8a38a836	111	is(latin1_to_native("\U\x{DF}aB\x{149}cD"), latin1_to_native("SSAB\x{2BC}NCD"),
c811e616	112	"multicharacter uppercase");
983ffd37 JH	113
	114	# The \x{DF} is its own lowercase, ditto for \x{149}.
	115	# There are no single character -> multiple characters lowercase mappings.
b0f2b690	116
8a38a836	117	is(latin1_to_native("\L\x{DF}aB\x{149}cD"), latin1_to_native("\x{DF}ab\x{149}cd"),
c811e616	118	"multicharacter lowercase");
b0f2b690	119
838f2281 BF	120	# \x{DF} is LATIN SMALL LETTER SHARP S, its foldcase is ss or \x{73}\x{73};
	121	# \x{149} is LATIN SMALL LETTER N PRECEDED BY APOSTROPHE, its foldcase is
	122	# \x{2BC}\x{6E} or MODIFIER LETTER APOSTROPHE and n.
	123	# Note that is this further tested in t/uni/fold.t
	124
	125	is(latin1_to_native("\F\x{DF}aB\x{149}cD"), latin1_to_native("ssab\x{2BC}ncd"),
	126	"multicharacter foldcase");
	127
	128
44bc797b JH	129	# titlecase is used for \u / ucfirst.
	130
	131	# \x{587} is ARMENIAN SMALL LIGATURE ECH YIWN and its titlecase is
	132	# \x{535}\x{582} ARMENIAN CAPITAL LETTER ECH + ARMENIAN SMALL LETTER YIWN
	133	# while its lowercase is
	134	# \x{587} itself
	135	# and its uppercase is
	136	# \x{535}\x{552} ARMENIAN CAPITAL LETTER ECH + ARMENIAN CAPITAL LETTER YIWN
838f2281	137	# The foldcase is \x{565}\x{582} ARMENIAN SMALL LETTER ECH + ARMENIAN SMALL LETTER YIWN
44bc797b JH	138
	139	$a = "\x{587}";
	140
3a2263fe RGS	141	is("\L\x{587}" , "\x{587}", "ligature lowercase");
	142	is("\u\x{587}" , "\x{535}\x{582}", "ligature titlecase");
	143	is("\U\x{587}" , "\x{535}\x{552}", "ligature uppercase");
838f2281	144	is("\F\x{587}" , "\x{565}\x{582}", "ligature foldcase");
44bc797b	145
2e3dedfe	146	# mktables had problems where many-to-one case mappings didn't work right.
89ebb4a3	147	# The lib/uni/fold.t should give the fourth folding, "casefolding", a good
838f2281	148	# workout.
83171573 JH	149	# \x{01C4} is LATIN CAPITAL LETTER DZ WITH CARON
	150	# \x{01C5} is LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON
	151	# \x{01C6} is LATIN SMALL LETTER DZ WITH CARON
	152	# \x{03A3} is GREEK CAPITAL LETTER SIGMA
	153	# \x{03C2} is GREEK SMALL LETTER FINAL SIGMA
	154	# \x{03C3} is GREEK SMALL LETTER SIGMA
2e3dedfe	155
3a2263fe RGS	156	is(lc("\x{1C4}") , "\x{1C6}", "U+01C4 lc is U+01C6");
3a2263fe RGS	157	is(lc("\x{1C5}") , "\x{1C6}", "U+01C5 lc is U+01C6, too");
2e3dedfe	158
3a2263fe RGS	159	is(ucfirst("\x{3C2}") , "\x{3A3}", "U+03C2 ucfirst is U+03A3");
3a2263fe RGS	160	is(ucfirst("\x{3C3}") , "\x{3A3}", "U+03C3 ucfirst is U+03A3, too");
2e3dedfe	161
3a2263fe RGS	162	is(uc("\x{1C5}") , "\x{1C4}", "U+01C5 uc is U+01C4");
3a2263fe RGS	163	is(uc("\x{1C6}") , "\x{1C4}", "U+01C6 uc is U+01C4, too");
2e3dedfe	164
ada6e8a9 AMS	165	# #18107: A host of bugs involving [ul]c{,first}. AMS 20021106
	166	$a = "\x{3c3}foo.bar"; # \x{3c3} == GREEK SMALL LETTER SIGMA.
	167	$b = "\x{3a3}FOO.BAR"; # \x{3a3} == GREEK CAPITAL LETTER SIGMA.
	168
	169	($c = $b) =~ s/(\w+)/lc($1)/ge;
3a2263fe	170	is($c , $a, "Using s///e to change case.");
ada6e8a9	171
d1eb3177	172	($c = $a) =~ s/(\p{IsWord}+)/uc($1)/ge;
3a2263fe	173	is($c , $b, "Using s///e to change case.");
ada6e8a9	174
838f2281 BF	175	($c = $a) =~ s/(\p{IsWord}+)/fc($1)/ge;
	176	is($c , $a, "Using s///e to foldcase.");
	177
d1eb3177	178	($c = $b) =~ s/(\p{IsWord}+)/lcfirst($1)/ge;
3a2263fe	179	is($c , "\x{3c3}FOO.bAR", "Using s///e to change case.");
ada6e8a9	180
d1eb3177	181	($c = $a) =~ s/(\p{IsWord}+)/ucfirst($1)/ge;
3a2263fe RGS	182	is($c , "\x{3a3}foo.Bar", "Using s///e to change case.");
	183
	184	# #18931: perl5.8.0 bug in \U..\E processing
04d26ece	185	# Test case from Nicholas Clark.
3a2263fe RGS	186	for my $a (0,1) {
	187	$_ = 'abcdefgh';
	188	$_ .= chr 256;
	189	chop;
	190	/(.*)/;
	191	is(uc($1), "ABCDEFGH", "[perl #18931]");
	192	}
	193
	194	{
	195	foreach (0, 1) {
	196	$a = v10.v257;
	197	chop $a;
	198	$a =~ s/^(\s)(\w)/$1\u$2/;
	199	is($a, v10, "[perl #18857]");
3a2263fe RGS	200	}
3a2263fe RGS	201	}
6818a357 TS	202
	203
	204	# [perl #38619] Bug in lc and uc (interaction between UTF-8, substr, and lc/uc)
	205
	206	for ("a\x{100}", "xyz\x{100}") {
	207	is(substr(uc($_), 0), uc($_), "[perl #38619] uc");
	208	}
	209	for ("A\x{100}", "XYZ\x{100}") {
	210	is(substr(lc($_), 0), lc($_), "[perl #38619] lc");
	211	}
	212	for ("a\x{100}", "ßyz\x{100}") { # ß to Ss (different length)
	213	is(substr(ucfirst($_), 0), ucfirst($_), "[perl #38619] ucfirst");
	214	}
	215
838f2281 BF	216	#fc() didn't exist back then, but coverage is coverage.
	217	for ("a\x{100}", "ßyz\x{100}", "xyz\x{100}", "XYZ\x{100}") { # ß to Ss (different length)
	218	is(substr(fc($_), 0), fc($_), "[perl #38619] fc");
	219	}
	220
6818a357 TS	221	# Related to [perl #38619]
	222	# the original report concerns PERL_MAGIC_utf8.
	223	# these cases concern PERL_MAGIC_regex_global.
	224
	225	for (map { $_ } "a\x{100}", "abc\x{100}", "\x{100}") {
	226	chop; # get ("a", "abc", "") in utf8
	227	my $return = uc($_) =~ /\G(.?)/g;
	228	my $result = $return ? $1 : "not";
	229	my $expect = (uc($_) =~ /(.?)/g)[0];
	230	is($return, 1, "[perl #38619]");
	231	is($result, $expect, "[perl #38619]");
	232	}
	233
	234	for (map { $_ } "A\x{100}", "ABC\x{100}", "\x{100}") {
	235	chop; # get ("A", "ABC", "") in utf8
	236	my $return = lc($_) =~ /\G(.?)/g;
	237	my $result = $return ? $1 : "not";
	238	my $expect = (lc($_) =~ /(.?)/g)[0];
	239	is($return, 1, "[perl #38619]");
	240	is($result, $expect, "[perl #38619]");
	241	}
	242
838f2281 BF	243	for (map { $_ } "A\x{100}", "ABC\x{100}", "\x{100}") {
	244	chop; # get ("A", "ABC", "") in utf8
	245	my $return = fc($_) =~ /\G(.?)/g;
	246	my $result = $return ? $1 : "not";
	247	my $expect = (fc($_) =~ /(.?)/g)[0];
	248	is($return, 1, "[perl #38619]");
	249	is($result, $expect, "[perl #38619]");
	250	}
	251
c2955298 NC	252	for (1, 4, 9, 16, 25) {
	253	is(uc "\x{03B0}" x $_, "\x{3a5}\x{308}\x{301}" x $_,
	254	'uc U+03B0 grows threefold');
	255
	256	is(lc "\x{0130}" x $_, "i\x{307}" x $_, 'lc U+0130 grows');
838f2281 BF	257
	258	is(fc "\x{03B0}" x $_, "\x{3C5}\x{308}\x{301}" x $_,
	259	'fc U+03B0 grows threefold');
c2955298	260	}
17fa0776 RGS	261
17fa0776 RGS	262	# bug #43207
4b342708	263	my $temp = "HellO";
17fa0776 RGS	264	for ("$temp") {
17fa0776 RGS	265	lc $_;
4b342708	266	is($_, "HellO", '[perl #43207] lc($_) modifying $_');
17fa0776	267	}
838f2281 BF	268	for ("$temp") {
838f2281 BF	269	fc $_;
4b342708 FC	270	is($_, "HellO", '[perl #43207] fc($_) modifying $_');
	271	}
	272	for ("$temp") {
	273	uc $_;
	274	is($_, "HellO", '[perl #43207] uc($_) modifying $_');
	275	}
	276	for ("$temp") {
	277	ucfirst $_;
	278	is($_, "HellO", '[perl #43207] ucfirst($_) modifying $_');
	279	}
	280	for ("$temp") {
	281	lcfirst $_;
	282	is($_, "HellO", '[perl #43207] lcfirst($_) modifying $_');
838f2281 BF	283	}
838f2281 BF	284
aa4af542 RGS	285	# new in Unicode 5.1.0
aa4af542 RGS	286	is(lc("\x{1E9E}"), "\x{df}", "lc(LATIN CAPITAL LETTER SHARP S)");
b7cc4340 KW	287
	288	{
	289	use feature 'unicode_strings';
	290	use bytes;
	291	is(lc("\xc0"), "\xc0", "lc of above-ASCII Latin1 is itself under use bytes");
	292	is(lcfirst("\xc0"), "\xc0", "lcfirst of above-ASCII Latin1 is itself under use bytes");
	293	is(uc("\xe0"), "\xe0", "uc of above-ASCII Latin1 is itself under use bytes");
	294	is(ucfirst("\xe0"), "\xe0", "ucfirst of above-ASCII Latin1 is itself under use bytes");
	295	}
a547fd21 FC	296
	297	# Brought up in ticket #117855: Constant folding applied to uc() should use
	298	# the right set of hints.
	299	fresh_perl_like(<<'constantfolding', qr/^(\d+),\1\z/, {},
	300	my $function = "uc";
	301	my $char = "\xff";
	302	{
	303	use feature 'unicode_strings';
	304	print ord uc($char), ",",
	305	ord eval "$function('$char')", "\n";
	306	}
	307	constantfolding
	308	'folded uc() in string eval uses the right hints');
5cd5e2d6 FC	309
	310	# In-place lc/uc should not corrupt string buffers when given a non-utf8-
	311	# flagged thingy that stringifies to utf8
	312	$h{k} = bless[], "\x{3b0}\x{3b0}\x{3b0}bcde"; # U+03B0 grows with uc()
	313	# using delete marks it as TEMP, so uc-in-place is permitted
	314	like uc delete $h{k}, qr "^(?:\x{3a5}\x{308}\x{301}){3}BCDE=ARRAY\(.*\)",
	315	'uc(TEMP ref) does not produce a corrupt string';
	316	$h{k} = bless[], "\x{130}bcde"; # U+0130 grows with lc()
	317	# using delete marks it as TEMP, so uc-in-place is permitted
	318	like lc delete $h{k}, qr "^i\x{307}bcde=array\(.*\)",
	319	'lc(TEMP ref) does not produce a corrupt string';
31f05a37 KW	320
31f05a37 KW	321
9b0711ee	322	my $utf8_locale = find_utf8_ctype_locale();
31f05a37 KW	323
	324	SKIP: {
	325	skip 'Can\'t find a UTF-8 locale', 4*256 unless defined $utf8_locale;
	326
baacc348 JH	327	eval { require POSIX; import POSIX 'locale_h'; };
	328	unless (defined &POSIX::LC_CTYPE) {
	329	skip "no POSIX (maybe no Fcntl, or no dynamic loading)", 4*256;
	330	}
	331
31f05a37 KW	332	use feature qw( unicode_strings );
	333
	334	no locale;
	335
	336	my @unicode_lc;
	337	my @unicode_uc;
	338	my @unicode_lcfirst;
	339	my @unicode_ucfirst;
	340
	341	# Get all the values outside of 'locale'
	342	for my $i (0 .. 255) {
	343	push @unicode_lc, lc(chr $i);
	344	push @unicode_uc, uc(chr $i);
	345	push @unicode_lcfirst, lcfirst(chr $i);
	346	push @unicode_ucfirst, ucfirst(chr $i);
	347	}
	348
31f05a37 KW	349	use locale;
	350	setlocale(LC_CTYPE, $utf8_locale);
	351
	352	for my $i (0 .. 255) {
	353	is(lc(chr $i), $unicode_lc[$i], "In a UTF-8 locale, lc(chr $i) is the same as official Unicode");
	354	is(uc(chr $i), $unicode_uc[$i], "In a UTF-8 locale, uc(chr $i) is the same as official Unicode");
	355	is(lcfirst(chr $i), $unicode_lcfirst[$i], "In a UTF-8 locale, lcfirst(chr $i) is the same as official Unicode");
	356	is(ucfirst(chr $i), $unicode_ucfirst[$i], "In a UTF-8 locale, ucfirst(chr $i) is the same as official Unicode");
	357	}
	358	}