13 is($_, 'global', '$_ initial value');
15 is($_, 'glabol', 's/// on global $_');
19 is($_, 'local', 'my $_ initial value');
21 is($_, 'lacol', 's/// on my $_');
23 is($1, 'la', '// on my $_');
24 cmp_ok(tr/c/d/, '==', 1, 'tr/// on my $_ counts correctly' );
25 is($_, 'ladol', 'tr/// on my $_');
28 is($_, 'nested', 'my $_ nested');
30 is($_, 'neste', 'chop on my $_');
34 is($_, 'glabol', 'gains access to our global $_');
36 is($_, 'ladol', 'my $_ restored');
38 is($_, 'glabol', 'global $_ restored');
40 is($_, 'global', 's/// on global $_ again');
44 is($_, 22, 'our $_ is seen explicitly');
46 is($_, 2, '...default chop chops our $_');
48 is($1, 2, '...default match sees our $_');
55 is($_, "foo", 'for my $_');
57 is($1, "f", '...m// in for my $_');
58 is(our $_, 'global', '...our $_ inside for my $_');
60 is($_, 'local', '...my $_ restored outside for my $_');
61 is(our $_, 'global', '...our $_ restored outside for my $_');
65 for ("implicit foo") { # implicit "my $_"
66 is($_, "implicit foo", 'for implicit my $_');
68 is($1, "i", '...m// in for implicit my $_');
69 is(our $_, 'global', '...our $_ inside for implicit my $_');
71 is($_, 'local', '...my $_ restored outside for implicit my $_');
72 is(our $_, 'global', '...our $_ restored outside for implicit my $_');
76 is($_, "postfix foo", 'postfix for' ) for 'postfix foo';
77 is($_, 'local', '...my $_ restored outside postfix for');
78 is(our $_, 'global', '...our $_ restored outside postfix for');
82 is($_, "bar", 'for our $_');
84 is($1, "b", '...m// in for our $_');
86 is($_, 'global', '...our $_ restored outside for our $_');
91 sub tmap1 { /(.)/; $buf .= $1 } # uses our $_
93 sub tmap2 { /(.)/; $buf .= $1 } # uses my $_
97 ok( /^[67]\z/, 'local lexical $_ is seen in map' );
98 { is(our $_, 'global', 'our $_ still visible'); }
99 ok( $_ == 6 || $_ == 7, 'local lexical $_ is still seen in map' );
100 { my $_ ; is($_, undef, 'nested my $_ is undefined'); }
102 is($buf, 'gxgx', q/...map doesn't modify outer lexical $_/);
103 is($_, 'x', '...my $_ restored outside map');
104 is(our $_, 'global', '...our $_ restored outside map');
105 map { my $_; is($_, undef, 'redeclaring $_ in map block undefs it'); } 1;
107 { map { my $_; is($_, undef, 'declaring $_ in map block undefs it'); } 1; }
109 sub tmap3 () { return $_ };
111 sub tmap4 () { return $_ };
112 my $x = join '-', map $_.tmap3.tmap4, 1 .. 2;
113 is($x, '1globallocal-2globallocal', 'map without {}');
117 my $x = map $_, qw(a b);
118 is($x, 2, 'map in scalar context');
123 sub tgrep1 { /(.)/; $buf .= $1 }
125 sub tgrep2 { /(.)/; $buf .= $1 }
129 ok( /^[89]\z/, 'local lexical $_ is seen in grep' );
130 { is(our $_, 'global', 'our $_ still visible'); }
131 ok( $_ == 8 || $_ == 9, 'local lexical $_ is still seen in grep' );
133 is($buf, 'gygy', q/...grep doesn't modify outer lexical $_/);
134 is($_, 'y', '...my $_ restored outside grep');
135 is(our $_, 'global', '...our $_ restored outside grep');
138 sub tgrep3 () { return $_ };
140 sub tgrep4 () { return $_ };
141 my $x = join '-', grep $_=$_.tgrep3.tgrep4, 1 .. 2;
142 is($x, '1globallocal-2globallocal', 'grep without {} with side-effect');
143 is($_, 'local', '...but without extraneous side-effects');
147 my $x = grep $_, qw(a b);
148 is($x, 2, 'grep in scalar context');
156 local $::TODO = 'Marked as todo since test was added in 59f00321bbc2d046';
157 $r = $s =~ /to(?{ is($_, 'toto', 'my $_ in code-match' ) })to/;
159 ok($r, "\$s=$s should match!");
160 is(our $_, 'global', '...our $_ restored outside code-match');
166 is($x, "cba", 'reverse without arguments picks up $_');
172 ::is($::_, 'notmain', 'our $_ forced into main::');
174 ::is($1, 'notmain', '...m// defaults to our $_ in main::');
177 my $file = tempfile();
179 open my $_, '>', $file or die "Can't open $file: $!";
182 cmp_ok(-s $file, '>', 5, 'writing to filehandle $_ works');
185 open my $_, $file or die "Can't open $file: $!";
187 is($x, "hello\n", 'reading from <$_> works');
193 is($fqdb::_, 'fqdb', 'fully qualified $_ is not in main' );
194 is(eval q/$fqdb::_/, 'fqdb', 'fully qualified, evaled $_ is not in main' );
196 ::isnt($_, 'fqdb', 'unqualified $_ is in main' );
197 ::isnt(eval q/$_/, 'fqdb', 'unqualified, evaled $_ is in main');
201 $clank_est::qunckkk = 3;
206 ::is($qunckkk, 3, 'regular variables are not forced to main');
215 ::is($_, 4, '$_ is "special", and always forced to main');