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instance method

OptionParser#environment

environment(env = File.basename($0, '.*'))

# File tmp/rubies/ruby-3.0.5/lib/optparse.rb, line 1907
def environment(env = File.basename($0, '.*'))
  env = ENV[env] || ENV[env.upcase] or return
  require 'shellwords'
  parse(*Shellwords.shellwords(env))
end

Parses environment variable env or its uppercase with splitting like a shell.

env defaults to the basename of the program.

See also #def_tail_option #getopts #def_option #help also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1

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