Issue #15371 has been updated by hsbt (Hiroshi SHIBATA).

Assignee set to aycabta (aycabta .)
Status changed from Open to Assigned

----------------------------------------
Feature #15371: IRB with ARGV
https://bugs.ruby-lang.org/issues/15371#change-84261

* Author: svnpenn (Steven Penny)
* Status: Assigned
* Priority: Normal
* Assignee: aycabta (aycabta .)
----------------------------------------
PHP allows you to pass ARGV in interactive mode:

    $ php -a -- alpha beta gamma
    php > print $argv[3] . PHP_EOL;
    gamma

and Python offers 4 ways:

    $ python3 - alpha beta gamma
    >>> import sys
    >>> print(sys.argv[3])
    gamma

    $ python3 -- - alpha beta gamma
    >>> import sys
    >>> print(sys.argv[3])
    gamma

    $ python3 -i - alpha beta gamma
    >>> import sys
    >>> print(sys.argv[3])
    gamma

    $ python3 -i -- - alpha beta gamma
    >>> import sys
    >>> print(sys.argv[3])
    gamma

However IRB seems to have no way to accomplish this:

    $ irb - alpha beta gamma
    /usr/share/ruby/2.3.0/irb/init.rb:213:in `parse_opts':
    Unrecognized switch: - (IRB::UnrecognizedSwitch)

    $ irb -- alpha beta gamma
    /usr/share/ruby/2.3.0/irb/magic-file.rb:8:in `initialize': No such file or
    directory @ rb_sysopen - alpha (Errno::ENOENT)

    $ irb -- - alpha beta gamma
    /usr/share/ruby/2.3.0/irb/magic-file.rb:8:in `initialize': No such file or
    directory @ rb_sysopen - - (Errno::ENOENT)

    $ irb - -- alpha beta gamma
    /usr/share/ruby/2.3.0/irb/init.rb:213:in `parse_opts':
    Unrecognized switch: - (IRB::UnrecognizedSwitch)



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