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README.md  view on Meta::CPAN

A key advantage of this mechanism is that **callee modules typically
require no modification** to work with nofork+raw mode.

Many Perl modules use `use open` pragma or equivalent to set up
encoding layers on standard I/O:

    package App::ansicolumn;
    use open IO => ':utf8', ':std';    # sets :encoding(utf8) on STDIO

This works transparently because of execution order.  When using
nofork mode with method chaining:

    require App::ansicolumn;           # (1) module loaded here
    Command::Run->new
        ->command(\&ansicolumn, @args)
        ->with(stdin => $text, nofork => 1, raw => 1)
        ->update                       # (2) STDOUT redirected here
        ->data;

At step (1), `require` loads the module and `use open ':std'`

lib/Command/Run.pm  view on Meta::CPAN

A key advantage of this mechanism is that B<callee modules typically
require no modification> to work with nofork+raw mode.

Many Perl modules use C<use open> pragma or equivalent to set up
encoding layers on standard I/O:

    package App::ansicolumn;
    use open IO => ':utf8', ':std';    # sets :encoding(utf8) on STDIO

This works transparently because of execution order.  When using
nofork mode with method chaining:

    require App::ansicolumn;           # (1) module loaded here
    Command::Run->new
        ->command(\&ansicolumn, @args)
        ->with(stdin => $text, nofork => 1, raw => 1)
        ->update                       # (2) STDOUT redirected here
        ->data;

At step (1), C<require> loads the module and C<use open ':std'>