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lib/Big5.pm  view on Meta::CPAN

  since the ... is also the three-dot version of the range operator
  (see "Range Operators"). These examples of the yada yada are still syntax errors:

  print ...;
  open my($fh), '>', '/dev/passwd' or ...;
  if ( $condition && ... ) { print "Hello\n" };

  There are some cases where Perl can't immediately tell the difference between an
  expression and a statement. For instance, the syntax for a block and an anonymous
  hash reference constructor look the same unless there's something in the braces that
  give Perl a hint. The yada yada is a syntax error if Perl doesn't guess that the
  { ... } is a block. In that case, it doesn't think the ... is the yada yada because
  it's expecting an expression instead of a statement:

  my @transformed = map { ... } @input;  # syntax error

  You can use a ; inside your block to denote that the { ... } is a block and not a
  hash reference constructor. Now the yada yada works:

  my @transformed = map {; ... } @input; # ; disambiguates
  my @transformed = map { ...; } @input; # ; disambiguates

lib/Ebig5.pm  view on Meta::CPAN

#
# via File::HomeDir::Unix 1.00
#
sub my_home {
    my $home;

    if (exists $ENV{'HOME'} and defined $ENV{'HOME'}) {
        $home = $ENV{'HOME'};
    }

    # This is from the original code, but I'm guessing
    # it means "login directory" and exists on some Unixes.
    elsif (exists $ENV{'LOGDIR'} and $ENV{'LOGDIR'}) {
        $home = $ENV{'LOGDIR'};
    }

    ### More-desperate methods

    # Light desperation on any (Unixish) platform
    else {
        $home = CORE::eval q{ (getpwuid($<))[7] };

lib/Ebig5.pm  view on Meta::CPAN

  Ebig5::c(*), Ebig5::c_()   Entry is a character-special file (like an I/O device)
  Ebig5::u(*), Ebig5::u_()   File or directory is setuid
  Ebig5::g(*), Ebig5::g_()   File or directory is setgid
  Ebig5::k(*), Ebig5::k_()   File or directory has the sticky bit set
  ------------------------------------------------------------------------------

  The tests -T and -B takes a try at telling whether a file is text or binary.
  But people who know a lot about filesystems know that there's no bit (at least
  in UNIX-like operating systems) to indicate that a file is a binary or text file
  --- so how can Perl tell?
  The answer is that Perl cheats. As you might guess, it sometimes guesses wrong.

  This incomplete thinking of file test operator -T and -B gave birth to UTF8 flag
  of a later period.

  The Ebig5::T, Ebig5::T_, Ebig5::B, and Ebig5::B_ work as follows. The first block
  or so of the file is examined for strange chatracters such as
  [\000-\007\013\016-\032\034-\037\377] (that don't look like Big5). If more
  than 10% of the bytes appear to be strange, it's a *maybe* binary file;
  otherwise, it's a *maybe* text file. Also, any file containing ASCII NUL(\0) or
  \377 in the first block is considered a binary file. If Ebig5::T or Ebig5::B is