Bug #11711: Documentation for ARGV behavior is incorrect

• Status: Closed
• Assignee: trevrosen (Trevor Rosen)
• Target version: -
• ruby -v: 2.2.3
• Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN

[trevrosen (Trevor Rosen)]

http://ruby-doc.org/core-2.2.3/Object.html#ARGV

The above documentation states that ARGV[0] will contain the name of the Ruby program. While this is the behavior of ARGV in other places (C, Python, etc), it is not the behavior in Ruby.

In Ruby, ARGV[0] contains the name of the first argument supplied to the program's invocation.

To reproduce:

# argv-tester.rb
#!/usr/bin/env ruby

p ARGV[0]

Then execute with an argument:

$> ruby argv-tester.rb foo
foo

And without an argument:

$> ruby argv-tester.rb
nil

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r52670.

---

ruby.c: fix ARGV doc [ci skip]

• ruby.c (ruby_prog_init): [DOC] ARGV does not contain the name of
  the executable. [ruby-core:71561] [Bug #11711]