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46337
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use 5.010000; |
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use strict; |
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13
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3
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use warnings; |
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543
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4
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5
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package Regexp::Util; |
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7
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our $AUTHORITY = 'cpan:TOBYINK'; |
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our $VERSION = '0.005'; |
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10
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require XSLoader; |
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XSLoader::load(__PACKAGE__, $VERSION); |
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13
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eval 'require re'; |
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15
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require Exporter::Tiny; |
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our @ISA = qw( Exporter::Tiny ); |
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our @EXPORT; |
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our @EXPORT_OK = qw( |
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is_regexp |
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regexp_seen_evals |
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regexp_is_foreign |
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serialize_regexp |
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deserialize_regexp |
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25
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regexp_pattern regmust regname regnames regnames_count |
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); |
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our %EXPORT_TAGS = ( |
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all => \@EXPORT_OK, |
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default => \@EXPORT, |
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); |
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32
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sub regexp_is_foreign |
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{ |
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1
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1
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1
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7
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_regexp_engine_id($_[0]) != _regexp_engine_id(qr//); |
35
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} |
36
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37
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sub serialize_regexp |
38
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{ |
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1
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1
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1
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60
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my $re = shift; |
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41
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1
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50
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5
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if (not is_regexp($re)) |
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{ |
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0
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0
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require Carp; |
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0
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0
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Carp::croak("Cannot serialize non-regexp"); |
45
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} |
46
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47
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1
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50
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3
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if (regexp_seen_evals($re)) |
48
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{ |
49
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0
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0
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require Carp; |
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0
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0
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Carp::croak("Cannot serialize regexp containing evals"); |
51
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} |
52
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53
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1
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50
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2
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if (regexp_is_foreign($re)) |
54
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{ |
55
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0
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0
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require Carp; |
56
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0
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0
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Carp::croak("Cannot serialize regexp using plugin re engine"); |
57
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} |
58
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59
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1
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3
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my $str = re::regexp_pattern($re); |
60
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1
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50
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5
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return "qr/$str/" if $str !~ m{\/}; |
61
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0
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0
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0
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return "qr!$str!" if $str !~ m{\!}; |
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0
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0
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0
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return "qr#$str#" if $str !~ m{\#}; |
63
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64
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0
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0
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require B; |
65
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0
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0
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sprintf('do { my $re = %s; qr/$re/ }', B::perlstring($str)); |
66
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} |
67
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68
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my $safe; |
69
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sub deserialize_regexp |
70
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{ |
71
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1
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1
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1
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2
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my $str = shift; |
72
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73
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1
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50
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33
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6
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if (!defined $str or ref $str) |
74
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{ |
75
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0
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0
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require Carp; |
76
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0
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0
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Carp::croak("Cannot deserialize regexp"); |
77
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} |
78
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79
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1
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33
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3
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$safe ||= do { |
80
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1
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394
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require Safe; |
81
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1
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25809
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my $cpt = Safe->new; |
82
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1
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741
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$cpt->permit(qw/ :base_core :base_mem sprintf qr /); |
83
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1
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10
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$cpt; |
84
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}; |
85
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86
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1
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50
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3
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my $re = $safe->reval($str) or do { |
87
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0
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0
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(my $e = $@) =~ |
88
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s/ at \(eval \d+\) .+//; |
89
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0
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0
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chomp $e; |
90
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0
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0
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require Carp; |
91
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0
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0
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Carp::croak("Cannot deserialize regexp: $e"); |
92
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}; |
93
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94
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1
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50
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488
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return $re if is_regexp($re); |
95
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96
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0
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require Carp; |
97
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0
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Carp::croak("Cannot deserialize regexp: eval returned $re"); |
98
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} |
99
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100
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sub regexp_pattern { |
101
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0
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0
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0
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goto \&re::regexp_pattern; |
102
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} |
103
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104
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sub regmust { |
105
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0
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0
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0
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goto \&re::regmust; |
106
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} |
107
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108
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sub regname { |
109
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0
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0
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0
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goto \&re::regname; |
110
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} |
111
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112
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sub regnames { |
113
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0
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0
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0
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goto \&re::regnames; |
114
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} |
115
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116
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sub regnames_count { |
117
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0
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0
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0
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goto \&re::regnames_count; |
118
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} |
119
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120
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1; |
121
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122
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__END__ |