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=head1 NAME

FP::Repl::corefuncs

=head1 SYNOPSIS

=head1 DESCRIPTION

Returns a list of all perl CORE functions

=head1 NOTE

This is alpha software! Read the status section in the package README
or on the L<website|http://functional-perl.org/>.

=cut

package FP::Repl::corefuncs;
use Exporter "import";
our @EXPORT = qw(corefuncs);

use strict;
use warnings;
use warnings FATAL => 'uninitialized';

{
    # for some reason I can't seem to find out how to get at that otherwise.
    my $txt = <<'END';
    
       Functions for SCALARs or strings
           "chomp", "chop", "chr", "crypt", "hex", "index", "lc", "lcfirst", "length",
           "oct", "ord", "pack", "q/STRING/", "qq/STRING/", "reverse", "rindex",
           "sprintf", "substr", "tr///", "uc", "ucfirst", "y///"

       Regular expressions and pattern matching
           "m//", "pos", "quotemeta", "s///", "split", "study", "qr//"

       Numeric functions
           "abs", "atan2", "cos", "exp", "hex", "int", "log", "oct", "rand", "sin",
           "sqrt", "srand"

       Functions for real @ARRAYs
           "pop", "push", "shift", "splice", "unshift"

       Functions for list data
           "grep", "join", "map", "qw/STRING/", "reverse", "sort", "unpack"

       Functions for real %HASHes
           "delete", "each", "exists", "keys", "values"

       Input and output functions
           "binmode", "close", "closedir", "dbmclose", "dbmopen", "die", "eof", "fileno",
           "flock", "format", "getc", "print", "printf", "read", "readdir", "rewinddir",
           "seek", "seekdir", "select", "syscall", "sysread", "sysseek", "syswrite",
           "tell", "telldir", "truncate", "warn", "write"

       Functions for fixed length data or records
           "pack", "read", "syscall", "sysread", "syswrite", "unpack", "vec"

       Functions for filehandles, files, or directories
           "-X", "chdir", "chmod", "chown", "chroot", "fcntl", "glob", "ioctl", "link",
           "lstat", "mkdir", "open", "opendir", "readlink", "rename", "rmdir", "stat",
           "symlink", "umask", "unlink", "utime"

       Keywords related to the control flow of your perl program
           "caller", "continue", "die", "do", "dump", "eval", "exit", "goto", "last",
           "next", "redo", "return", "sub", "wantarray"

       Keywords related to scoping
           "caller", "import", "local", "my", "our", "package", "use"

       Miscellaneous functions
           "defined", "dump", "eval", "formline", "local", "my", "our", "reset", "scalar",
           "undef", "wantarray"

       Functions for processes and process groups
           "alarm", "exec", "fork", "getpgrp", "getppid", "getpriority", "kill", "pipe",
           "qx/STRING/", "setpgrp", "setpriority", "sleep", "system", "times", "wait",
           "waitpid"

       Keywords related to perl modules
           "do", "import", "no", "package", "require", "use"

       Keywords related to classes and object-orientedness
           "bless", "dbmclose", "dbmopen", "package", "ref", "tie", "tied", "untie", "use"

       Low-level socket functions
           "accept", "bind", "connect", "getpeername", "getsockname", "getsockopt", "lis­
           ten", "recv", "send", "setsockopt", "shutdown", "socket", "socketpair"

       System V interprocess communication functions
           "msgctl", "msgget", "msgrcv", "msgsnd", "semctl", "semget", "semop", "shmctl",
           "shmget", "shmread", "shmwrite"

       Fetching user and group info
           "endgrent", "endhostent", "endnetent", "endpwent", "getgrent", "getgrgid",
           "getgrnam", "getlogin", "getpwent", "getpwnam", "getpwuid", "setgrent", "setp­
           went"

       Fetching network info
           "endprotoent", "endservent", "gethostbyaddr", "gethostbyname", "gethostent",
           "getnetbyaddr", "getnetbyname", "getnetent", "getprotobyname", "getprotobynum­
           ber", "getprotoent", "getservbyname", "getservbyport", "getservent", "sethos­
           tent", "setnetent", "setprotoent", "setservent"

       Time-related functions
           "gmtime", "localtime", "time", "times"

       Functions new in perl5
           "abs", "bless", "chomp", "chr", "exists", "formline", "glob", "import", "lc",
           "lcfirst", "map", "my", "no", "our", "prototype", "qx", "qw", "readline",
           "readpipe", "ref", "sub*", "sysopen", "tie", "tied", "uc", "ucfirst", "untie",
           "use"
END

    $txt =~ s/(\w)[-­]\s*(\w)/$1$2/sg
        ;    # careful: the -­ are two different chars.
             #print $txt;
    my @corefuncs = grep { length($_) >= 3 } $txt =~ /"(\w+)"/g;
    no warnings 'redefine';
    *corefuncs = sub {