From: merch-redmine@...
Date: 2019-08-14T02:35:32+00:00
Subject: [ruby-core:94334] [Ruby master Feature#15371] IRB with ARGV

Issue #15371 has been updated by jeremyevans0 (Jeremy Evans).

Backport deleted (2.4: UNKNOWN, 2.5: UNKNOWN)
Tracker changed from Bug to Feature

I think this is a feature request, not a bug report.  It does seem like a useful feature, so I've submitted a pull request to irb for it: https://github.com/ruby/irb/pull/22

----------------------------------------
Feature #15371: IRB with ARGV
https://bugs.ruby-lang.org/issues/15371#change-80726

* Author: svnpenn (Steven Penny)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
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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