[perl5.git] / t / re / charset.t

# Test the /a, /d, etc regex modifiers

BEGIN {
    chdir 't' if -d 't';
    @INC = '../lib';
    require './test.pl';
    require './loc_tools.pl';
}

use strict;
use warnings;
use Config;

plan('no_plan');

# Each case is a valid element of its hash key.  Choose, where available, an
# ASCII-range, Latin-1 non-ASCII range, and above Latin1 range code point.
my %testcases = (
    '\w' => [ ord("A"), 0xE2, 0x16B ],   # Below expects these to all be alpha
    '\d' => [ ord("0"), 0x0662 ],
    '\s' => [ ord("\t"), 0xA0, 0x1680 ],  # Below expects these to be [:blank:]
    '[:cntrl:]' => [ 0x00, 0x88 ],
    '[:graph:]' => [ ord("&"), 0xF7, 0x02C7 ], # Below expects these to be
                                               # [:print:]
    '[:lower:]' => [ ord("g"), 0xE3, 0x0127 ],
    '[:punct:]' => [ ord("!"), 0xBF, 0x055C ],
    '[:upper:]' => [ ord("G"), 0xC3, 0x0126 ],
    '[:xdigit:]' => [ ord("4"), 0xFF15 ],
);

$testcases{'[:digit:]'} = $testcases{'\d'};
$testcases{'[:alnum:]'} = $testcases{'\w'};
$testcases{'[:alpha:]'} = $testcases{'\w'};
$testcases{'[:blank:]'} = $testcases{'\s'};
$testcases{'[:print:]'} = $testcases{'[:graph:]'};
$testcases{'[:space:]'} = $testcases{'\s'};
$testcases{'[:word:]'} = $testcases{'\w'};

my $utf8_locale;

my @charsets = qw(a d u aa);
if (! is_miniperl() && $Config{d_setlocale}) {
    require POSIX;
    my $current_locale = POSIX::setlocale( &POSIX::LC_ALL, "C") // "";
    if ($current_locale eq 'C') {

        # test for d_setlocale is repeated here because this one is compile
        # time, and the one above is run time
        use if $Config{d_setlocale}, 'locale';

        # Some implementations don't have the 128-255 range characters all
        # mean nothing under the C locale (an example being VMS).  This is
        # legal, but since we don't know what the right answers should be,
        # skip the locale tests in that situation.
        for my $i (128 .. 255) {
            goto skip_adding_C_locale if chr($i) =~ /[[:print:]]/;
        }
        push @charsets, 'l';

    skip_adding_C_locale:

        # Use a pseudo-modifier 'L' to indicate to use /l with a UTF-8 locale
        $utf8_locale = find_utf8_ctype_locale();
        push @charsets, 'L' if defined $utf8_locale;
    }
}

# For each possible character set...
foreach my $charset (@charsets) {
    my $locale;
    my $charset_mod = lc $charset;
    my $charset_display;
    if ($charset_mod eq 'l') {
        $locale = POSIX::setlocale(&POSIX::LC_ALL, ($charset eq 'l')
                                            ? "C"
                                            : $utf8_locale
                           );
        die "Couldn't change locale" unless $locale;
        $charset_display = $charset_mod . " ($locale)";
    }
    else {
        $charset_display = $charset_mod;
    }

    # And in utf8 or not
    foreach my $upgrade ("", 'utf8::upgrade($a); ') {

        # reverse gets the, \w, \s, \d first.
        for my $class (reverse sort keys %testcases) {

            # The complement of \w is \W; of [:posix:] is [:^posix:]
            my $complement = $class;
            if ($complement !~ s/ ( \[: ) /$1^/x) {
                $complement = uc($class);
            }

            # For each test case
            foreach my $ord (@{$testcases{$class}}) {
                my $char = display(chr($ord));

                # > 255 already implies upgraded.  Skip the ones that don't
                # have an explicit upgrade.  This shows more clearly in the
                # output which tests are in utf8, or not.
                next if $ord > 255 && ! $upgrade;

                my $reason = "";    # Explanation output with each test
                my $neg_reason = "";
                my $match = 1;      # Calculated whether test regex should
                                    # match or not

                # Everything always matches in ASCII, or under /u, or under /l
                # with a UTF-8 locale
                if ($ord < 128 || $charset eq 'u' || $charset eq 'L') {
                    $reason = "\"$char\" is a $class under /$charset_display";
                    $neg_reason = "\"$char\" is not a $complement under /$charset_display";
                }
                elsif ($charset eq "a" || $charset eq "aa") {
                    $match = 0;
                    $reason = "\"$char\" is non-ASCII, which can't be a $class under /$charset_display";
                    $neg_reason = "\"$char\" is non-ASCII, which is a $complement under /$charset_display";
                }
                elsif ($ord > 255) {
                    $reason = "\"$char\" is a $class under /$charset_display";
                    $neg_reason = "\"$char\" is not a $complement under /$charset_display";
                }
                elsif ($charset eq 'l') {

                    # We are using the C locale, which is essentially ASCII,
                    # but under utf8, the above-latin1 chars are treated as
                    # Unicode)
                    $reason = "\"$char\" is not a $class in the C locale under /$charset_mod";
                    $neg_reason = "\"$char\" is a $complement in the C locale under /$charset_mod";
                    $match = 0;
                }
                elsif ($upgrade) {
                    $reason = "\"$char\" is a $class in utf8 under /$charset_display";
                    $neg_reason = "\"$char\" is not a $complement in utf8 under /$charset_display";
                }
                else {
                    $reason = "\"$char\" is above-ASCII latin1, which requires utf8 to be a $class under /$charset_display";
                    $neg_reason = "\"$char\" is above-ASCII latin1, which is a $complement under /$charset_display (unless in utf8)";
                    $match = 0;
                }
                $reason = "; $reason" if $reason;
                $neg_reason = "; $neg_reason" if $neg_reason;

                my $op;
                my $neg_op;
                if ($match) {
                    $op = '=~';
                    $neg_op = '!~';
                }
                else {
                    $op = '!~';
                    $neg_op = '=~';
                }

                # In [...] or not
                foreach my $bracketed (0, 1) {
                    my $lb = "";
                    my $rb = "";
                    if ($bracketed) {

                        # Adds an extra char to the character class to make sure
                        # that the class doesn't get optimized away.
                        $lb = ($bracketed) ? '[_' : "";
                        $rb = ($bracketed) ? ']' : "";
                    }
                    else {  # [:posix:] must be inside outer [ ]
                        next if $class =~ /\[/;
                    }

                    my $length = 10;    # For regexec.c regrepeat() cases by
                                        # matching more than one item
                    # Test both class and its complement, and with one or more
                    # than one item to match.
                    foreach my $eval (
                        qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: $lb$class$rb ) /x],
                        qq[my \$a = "$char" x $length; $upgrade\$a $op qr/ (?$charset_mod: $lb$class$rb\{$length} ) /x],
                    ) {
                        ok (eval $eval, $eval . $reason);
                    }
                    foreach my $eval (
                        qq[my \$a = "$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: $lb$complement$rb ) /x],
                        qq[my \$a = "$char" x $length; $upgrade\$a $neg_op qr/ (?$charset_mod: $lb$complement$rb\{$length} ) /x],
                    ) {
                        ok (eval $eval, $eval . $neg_reason);
                    }
                }

                next if $class ne '\w';

                # Test \b, \B at beginning and end of string
                foreach my $eval (
                    qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: ^ \\b . ) /x],
                    qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: . \\b \$) /x],
                ) {
                    ok (eval $eval, $eval . $reason);
                }
                foreach my $eval (
                    qq[my \$a = "$char"; $upgrade\$a $neg_op qr/(?$charset_mod: ^ \\B . ) /x],
                    qq[my \$a = "$char"; $upgrade\$a $neg_op qr/(?$charset_mod: . \\B \$ ) /x],
                ) {
                    ok (eval $eval, $eval . $neg_reason);
                }

                # Test \b, \B adjacent to a non-word char, both before it and
                # after.  We test with ASCII, Latin1 and Unicode non-word chars
                foreach my $space_ord (@{$testcases{'\s'}}) {

                    # Useless to try to test non-utf8 when the ord itself
                    # forces utf8
                    next if $space_ord > 255 && ! $upgrade;

                    my $space = display(chr $space_ord);

                    foreach my $eval (
                        qq[my \$a = "$space$char"; $upgrade\$a $op qr/ (?$charset_mod: . \\b . ) /x],
                        qq[my \$a = "$char$space"; $upgrade\$a $op qr/ (?$charset_mod: . \\b . ) /x],
                    ) {
                        ok (eval $eval, $eval . $reason . "; \"$space\" is not a \\w");
                    }
                    foreach my $eval (
                        qq[my \$a = "$space$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: . \\B . ) /x],
                        qq[my \$a = "$char$space"; $upgrade\$a $neg_op qr/ (?$charset_mod: . \\B . ) /x],
                    ) {
                        ok (eval $eval, $eval . $neg_reason . "; \"$space\" is not a \\w");
                    }
                }

                # Test \b, \B in the middle of two nominally word chars, but
                # one or both may be considered non-word depending on range
                # and charset.
                foreach my $other_ord (@{$testcases{'\w'}}) {
                    next if $other_ord > 255 && ! $upgrade;
                    my $other = display(chr $other_ord);

                    # Determine if the other char is a word char in current
                    # circumstances
                    my $other_is_word = 1;
                    my $other_reason = "\"$other\" is a $class under /$charset_display";
                    my $other_neg_reason = "\"$other\" is not a $complement under /$charset_display";
                    if ($other_ord > 127
                        && $charset ne 'u' && $charset ne 'L'
                        && (($charset eq "a" || $charset eq "aa")
                            || ($other_ord < 256 && ($charset eq 'l' || ! $upgrade))))
                    {
                        $other_is_word = 0;
                        $other_reason = "\"$other\" is not a $class under /$charset_display";
                        $other_neg_reason = "\"$other\" is a $complement under /$charset_display";
                    }
                    my $both_reason = $reason;
                    $both_reason .= "; $other_reason" if $other_ord != $ord;
                    my $both_neg_reason = $neg_reason;
                    $both_neg_reason .= "; $other_neg_reason" if $other_ord != $ord;

                    # If both are the same wordness, then \b will fail; \B
                    # succeed
                    if ($match == $other_is_word) {
                        $op = '!~';
                        $neg_op = '=~';
                    }
                    else {
                        $op = '=~';
                        $neg_op = '!~';
                    }

                    foreach my $eval (
                        qq[my \$a = "$other$char"; $upgrade\$a $op qr/ (?$charset_mod: $other \\b $char ) /x],
                        qq[my \$a = "$char$other"; $upgrade\$a $op qr/ (?$charset_mod: $char \\b $other ) /x],
                    ) {
                        ok (eval $eval, $eval . $both_reason);
                    }
                    foreach my $eval (
                        qq[my \$a = "$other$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: $other \\B $char ) /x],
                        qq[my \$a = "$char$other"; $upgrade\$a $neg_op qr/ (?$charset_mod: $char \\B $other ) /x],
                    ) {
                        ok (eval $eval, $eval . $both_neg_reason);
                    }

                    next if $other_ord == $ord;

                    # These start with the \b or \B.  They are included, based
                    # on source code analysis, to force the testing of the FBC
                    # (find_by_class) portions of regexec.c.
                    foreach my $eval (
                        qq[my \$a = "$other$char"; $upgrade\$a $op qr/ (?$charset_mod: \\b $char ) /x],
                        qq[my \$a = "$char$other"; $upgrade\$a $op qr/ (?$charset_mod: \\b $other ) /x],
                    ) {
                        ok (eval $eval, $eval . $both_reason);
                    }
                    foreach my $eval (
                        qq[my \$a = "$other$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: \\B $char ) /x],
                        qq[my \$a = "$char$other"; $upgrade\$a $neg_op qr/ (?$charset_mod: \\B $other ) /x],
                    ) {
                        ok (eval $eval, $eval . $both_neg_reason);
                    }
                }
            } # End of each test case in a class
        } # End of \w, \s, ...
    } # End of utf8 upgraded or not
}

plan(curr_test() - 1);
Commit	Line	Data
e8ed1101 KW	1	# Test the /a, /d, etc regex modifiers
	2
	3	BEGIN {
	4	chdir 't' if -d 't';
	5	@INC = '../lib';
	6	require './test.pl';
31f05a37	7	require './loc_tools.pl';
e8ed1101 KW	8	}
	9
	10	use strict;
	11	use warnings;
ed35198c	12	use Config;
e8ed1101	13
aab0501d KW	14	plan('no_plan');
aab0501d KW	15
e8ed1101 KW	16	# Each case is a valid element of its hash key. Choose, where available, an
	17	# ASCII-range, Latin-1 non-ASCII range, and above Latin1 range code point.
	18	my %testcases = (
	19	'\w' => [ ord("A"), 0xE2, 0x16B ], # Below expects these to all be alpha
	20	'\d' => [ ord("0"), 0x0662 ],
	21	'\s' => [ ord("\t"), 0xA0, 0x1680 ], # Below expects these to be [:blank:]
	22	'[:cntrl:]' => [ 0x00, 0x88 ],
	23	'[:graph:]' => [ ord("&"), 0xF7, 0x02C7 ], # Below expects these to be
	24	# [:print:]
	25	'[:lower:]' => [ ord("g"), 0xE3, 0x0127 ],
	26	'[:punct:]' => [ ord("!"), 0xBF, 0x055C ],
	27	'[:upper:]' => [ ord("G"), 0xC3, 0x0126 ],
	28	'[:xdigit:]' => [ ord("4"), 0xFF15 ],
	29	);
	30
	31	$testcases{'[:digit:]'} = $testcases{'\d'};
	32	$testcases{'[:alnum:]'} = $testcases{'\w'};
	33	$testcases{'[:alpha:]'} = $testcases{'\w'};
	34	$testcases{'[:blank:]'} = $testcases{'\s'};
	35	$testcases{'[:print:]'} = $testcases{'[:graph:]'};
	36	$testcases{'[:space:]'} = $testcases{'\s'};
	37	$testcases{'[:word:]'} = $testcases{'\w'};
	38
31f05a37 KW	39	my $utf8_locale;
31f05a37 KW	40
c973bd4f	41	my @charsets = qw(a d u aa);
569f7fc5	42	if (! is_miniperl() && $Config{d_setlocale}) {
09fcee4e KW	43	require POSIX;
09fcee4e KW	44	my $current_locale = POSIX::setlocale( &POSIX::LC_ALL, "C") // "";
fff7535c	45	if ($current_locale eq 'C') {
ed35198c KW	46
	47	# test for d_setlocale is repeated here because this one is compile
	48	# time, and the one above is run time
	49	use if $Config{d_setlocale}, 'locale';
fff7535c	50
0e18027d KW	51	# Some implementations don't have the 128-255 range characters all
	52	# mean nothing under the C locale (an example being VMS). This is
	53	# legal, but since we don't know what the right answers should be,
	54	# skip the locale tests in that situation.
fff7535c	55	for my $i (128 .. 255) {
31f05a37	56	goto skip_adding_C_locale if chr($i) =~ /[[:print:]]/;
fff7535c KW	57	}
fff7535c KW	58	push @charsets, 'l';
31f05a37 KW	59
	60	skip_adding_C_locale:
	61
	62	# Use a pseudo-modifier 'L' to indicate to use /l with a UTF-8 locale
9b0711ee	63	$utf8_locale = find_utf8_ctype_locale();
31f05a37	64	push @charsets, 'L' if defined $utf8_locale;
fff7535c	65	}
09fcee4e KW	66	}
09fcee4e KW	67
e8ed1101	68	# For each possible character set...
158ba892	69	foreach my $charset (@charsets) {
31f05a37 KW	70	my $locale;
	71	my $charset_mod = lc $charset;
	72	my $charset_display;
	73	if ($charset_mod eq 'l') {
	74	$locale = POSIX::setlocale(&POSIX::LC_ALL, ($charset eq 'l')
	75	? "C"
	76	: $utf8_locale
	77	);
	78	die "Couldn't change locale" unless $locale;
	79	$charset_display = $charset_mod . " ($locale)";
	80	}
	81	else {
	82	$charset_display = $charset_mod;
	83	}
e8ed1101 KW	84
	85	# And in utf8 or not
	86	foreach my $upgrade ("", 'utf8::upgrade($a); ') {
	87
	88	# reverse gets the, \w, \s, \d first.
	89	for my $class (reverse sort keys %testcases) {
	90
	91	# The complement of \w is \W; of [:posix:] is [:^posix:]
	92	my $complement = $class;
	93	if ($complement !~ s/ ( \[: ) /$1^/x) {
	94	$complement = uc($class);
	95	}
	96
	97	# For each test case
	98	foreach my $ord (@{$testcases{$class}}) {
	99	my $char = display(chr($ord));
	100
	101	# > 255 already implies upgraded. Skip the ones that don't
9d44f25f	102	# have an explicit upgrade. This shows more clearly in the
e8ed1101 KW	103	# output which tests are in utf8, or not.
	104	next if $ord > 255 && ! $upgrade;
	105
	106	my $reason = ""; # Explanation output with each test
4fc9fd85	107	my $neg_reason = "";
e8ed1101 KW	108	my $match = 1; # Calculated whether test regex should
	109	# match or not
	110
6d9a9b17 KW	111	# Everything always matches in ASCII, or under /u, or under /l
6d9a9b17 KW	112	# with a UTF-8 locale
31f05a37 KW	113	if ($ord < 128 \|\| $charset eq 'u' \|\| $charset eq 'L') {
	114	$reason = "\"$char\" is a $class under /$charset_display";
	115	$neg_reason = "\"$char\" is not a $complement under /$charset_display";
e8ed1101	116	}
c973bd4f	117	elsif ($charset eq "a" \|\| $charset eq "aa") {
e8ed1101	118	$match = 0;
6d9a9b17 KW	119	$reason = "\"$char\" is non-ASCII, which can't be a $class under /$charset_display";
6d9a9b17 KW	120	$neg_reason = "\"$char\" is non-ASCII, which is a $complement under /$charset_display";
e8ed1101 KW	121	}
e8ed1101 KW	122	elsif ($ord > 255) {
31f05a37 KW	123	$reason = "\"$char\" is a $class under /$charset_display";
31f05a37 KW	124	$neg_reason = "\"$char\" is not a $complement under /$charset_display";
e8ed1101 KW	125	}
	126	elsif ($charset eq 'l') {
	127
	128	# We are using the C locale, which is essentially ASCII,
	129	# but under utf8, the above-latin1 chars are treated as
	130	# Unicode)
6d9a9b17 KW	131	$reason = "\"$char\" is not a $class in the C locale under /$charset_mod";
6d9a9b17 KW	132	$neg_reason = "\"$char\" is a $complement in the C locale under /$charset_mod";
e8ed1101 KW	133	$match = 0;
	134	}
	135	elsif ($upgrade) {
6d9a9b17 KW	136	$reason = "\"$char\" is a $class in utf8 under /$charset_display";
6d9a9b17 KW	137	$neg_reason = "\"$char\" is not a $complement in utf8 under /$charset_display";
e8ed1101 KW	138	}
e8ed1101 KW	139	else {
6d9a9b17 KW	140	$reason = "\"$char\" is above-ASCII latin1, which requires utf8 to be a $class under /$charset_display";
6d9a9b17 KW	141	$neg_reason = "\"$char\" is above-ASCII latin1, which is a $complement under /$charset_display (unless in utf8)";
e8ed1101 KW	142	$match = 0;
	143	}
	144	$reason = "; $reason" if $reason;
4fc9fd85	145	$neg_reason = "; $neg_reason" if $neg_reason;
e8ed1101 KW	146
	147	my $op;
	148	my $neg_op;
	149	if ($match) {
	150	$op = '=~';
	151	$neg_op = '!~';
	152	}
	153	else {
	154	$op = '!~';
	155	$neg_op = '=~';
	156	}
	157
	158	# In [...] or not
	159	foreach my $bracketed (0, 1) {
	160	my $lb = "";
	161	my $rb = "";
	162	if ($bracketed) {
	163
	164	# Adds an extra char to the character class to make sure
	165	# that the class doesn't get optimized away.
	166	$lb = ($bracketed) ? '[_' : "";
	167	$rb = ($bracketed) ? ']' : "";
	168	}
	169	else { # [:posix:] must be inside outer [ ]
	170	next if $class =~ /\[/;
	171	}
	172
	173	my $length = 10; # For regexec.c regrepeat() cases by
	174	# matching more than one item
	175	# Test both class and its complement, and with one or more
	176	# than one item to match.
	177	foreach my $eval (
31f05a37 KW	178	qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: $lb$class$rb ) /x],
31f05a37 KW	179	qq[my \$a = "$char" x $length; $upgrade\$a $op qr/ (?$charset_mod: $lb$class$rb\{$length} ) /x],
1e50d612 KW	180	) {
	181	ok (eval $eval, $eval . $reason);
	182	}
	183	foreach my $eval (
31f05a37 KW	184	qq[my \$a = "$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: $lb$complement$rb ) /x],
31f05a37 KW	185	qq[my \$a = "$char" x $length; $upgrade\$a $neg_op qr/ (?$charset_mod: $lb$complement$rb\{$length} ) /x],
e8ed1101	186	) {
4fc9fd85	187	ok (eval $eval, $eval . $neg_reason);
e8ed1101 KW	188	}
	189	}
	190
	191	next if $class ne '\w';
	192
	193	# Test \b, \B at beginning and end of string
	194	foreach my $eval (
31f05a37 KW	195	qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: ^ \\b . ) /x],
31f05a37 KW	196	qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: . \\b \$) /x],
1e50d612 KW	197	) {
	198	ok (eval $eval, $eval . $reason);
	199	}
	200	foreach my $eval (
31f05a37 KW	201	qq[my \$a = "$char"; $upgrade\$a $neg_op qr/(?$charset_mod: ^ \\B . ) /x],
31f05a37 KW	202	qq[my \$a = "$char"; $upgrade\$a $neg_op qr/(?$charset_mod: . \\B \$ ) /x],
e8ed1101	203	) {
4fc9fd85	204	ok (eval $eval, $eval . $neg_reason);
e8ed1101 KW	205	}
	206
	207	# Test \b, \B adjacent to a non-word char, both before it and
	208	# after. We test with ASCII, Latin1 and Unicode non-word chars
	209	foreach my $space_ord (@{$testcases{'\s'}}) {
	210
	211	# Useless to try to test non-utf8 when the ord itself
	212	# forces utf8
	213	next if $space_ord > 255 && ! $upgrade;
	214
	215	my $space = display(chr $space_ord);
	216
	217	foreach my $eval (
31f05a37 KW	218	qq[my \$a = "$space$char"; $upgrade\$a $op qr/ (?$charset_mod: . \\b . ) /x],
31f05a37 KW	219	qq[my \$a = "$char$space"; $upgrade\$a $op qr/ (?$charset_mod: . \\b . ) /x],
1e50d612 KW	220	) {
	221	ok (eval $eval, $eval . $reason . "; \"$space\" is not a \\w");
	222	}
	223	foreach my $eval (
31f05a37 KW	224	qq[my \$a = "$space$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: . \\B . ) /x],
31f05a37 KW	225	qq[my \$a = "$char$space"; $upgrade\$a $neg_op qr/ (?$charset_mod: . \\B . ) /x],
e8ed1101	226	) {
4fc9fd85	227	ok (eval $eval, $eval . $neg_reason . "; \"$space\" is not a \\w");
e8ed1101 KW	228	}
	229	}
	230
	231	# Test \b, \B in the middle of two nominally word chars, but
	232	# one or both may be considered non-word depending on range
	233	# and charset.
	234	foreach my $other_ord (@{$testcases{'\w'}}) {
	235	next if $other_ord > 255 && ! $upgrade;
	236	my $other = display(chr $other_ord);
	237
	238	# Determine if the other char is a word char in current
	239	# circumstances
	240	my $other_is_word = 1;
31f05a37 KW	241	my $other_reason = "\"$other\" is a $class under /$charset_display";
31f05a37 KW	242	my $other_neg_reason = "\"$other\" is not a $complement under /$charset_display";
e8ed1101	243	if ($other_ord > 127
31f05a37	244	&& $charset ne 'u' && $charset ne 'L'
c973bd4f	245	&& (($charset eq "a" \|\| $charset eq "aa")
e8ed1101 KW	246	\|\| ($other_ord < 256 && ($charset eq 'l' \|\| ! $upgrade))))
	247	{
	248	$other_is_word = 0;
31f05a37 KW	249	$other_reason = "\"$other\" is not a $class under /$charset_display";
31f05a37 KW	250	$other_neg_reason = "\"$other\" is a $complement under /$charset_display";
e8ed1101 KW	251	}
	252	my $both_reason = $reason;
	253	$both_reason .= "; $other_reason" if $other_ord != $ord;
4fc9fd85 KW	254	my $both_neg_reason = $neg_reason;
4fc9fd85 KW	255	$both_neg_reason .= "; $other_neg_reason" if $other_ord != $ord;
e8ed1101 KW	256
	257	# If both are the same wordness, then \b will fail; \B
	258	# succeed
	259	if ($match == $other_is_word) {
	260	$op = '!~';
	261	$neg_op = '=~';
	262	}
	263	else {
	264	$op = '=~';
	265	$neg_op = '!~';
	266	}
	267
	268	foreach my $eval (
31f05a37 KW	269	qq[my \$a = "$other$char"; $upgrade\$a $op qr/ (?$charset_mod: $other \\b $char ) /x],
31f05a37 KW	270	qq[my \$a = "$char$other"; $upgrade\$a $op qr/ (?$charset_mod: $char \\b $other ) /x],
1e50d612 KW	271	) {
	272	ok (eval $eval, $eval . $both_reason);
	273	}
	274	foreach my $eval (
31f05a37 KW	275	qq[my \$a = "$other$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: $other \\B $char ) /x],
31f05a37 KW	276	qq[my \$a = "$char$other"; $upgrade\$a $neg_op qr/ (?$charset_mod: $char \\B $other ) /x],
e8ed1101	277	) {
4fc9fd85	278	ok (eval $eval, $eval . $both_neg_reason);
e8ed1101 KW	279	}
	280
	281	next if $other_ord == $ord;
	282
	283	# These start with the \b or \B. They are included, based
	284	# on source code analysis, to force the testing of the FBC
	285	# (find_by_class) portions of regexec.c.
	286	foreach my $eval (
31f05a37 KW	287	qq[my \$a = "$other$char"; $upgrade\$a $op qr/ (?$charset_mod: \\b $char ) /x],
31f05a37 KW	288	qq[my \$a = "$char$other"; $upgrade\$a $op qr/ (?$charset_mod: \\b $other ) /x],
1e50d612 KW	289	) {
	290	ok (eval $eval, $eval . $both_reason);
	291	}
	292	foreach my $eval (
31f05a37 KW	293	qq[my \$a = "$other$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: \\B $char ) /x],
31f05a37 KW	294	qq[my \$a = "$char$other"; $upgrade\$a $neg_op qr/ (?$charset_mod: \\B $other ) /x],
e8ed1101	295	) {
4fc9fd85	296	ok (eval $eval, $eval . $both_neg_reason);
e8ed1101 KW	297	}
	298	}
	299	} # End of each test case in a class
	300	} # End of \w, \s, ...
	301	} # End of utf8 upgraded or not
	302	}
	303
	304	plan(curr_test() - 1);