Issue #7537 has been updated by prijutme4ty (Ilya Vorontsov).


In my opinion, negative numbers shouldn't be treated as option keys unless it was explicitly specified. In other cases them should be treated as usual parameters.
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Bug #7537: OptionParser treats negative digits as options
https://bugs.ruby-lang.org/issues/7537#change-34562

Author: prijutme4ty (Ilya Vorontsov)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: 1.9.3(p0, p327 both)


Is it intentional that negative digits are treated as options?
If I use negative digit as an argument of an option, it is treated as a number

OptionParser.new {|opts|
  opts.on('-p','--pvalue VAL', Integer, 'P-value') {|v|  puts "P-value: #{v}" }
}.parse!

`ruby my_test.rb -p -1` works normally

But if I use it as optional argument of an option:

OptionParser.new {|opts|
  opts.on('-p','--pvalue [VAL]', Integer, 'P-value') {|v|  puts "P-value: #{v}" }
}.parse!

`ruby my_test.rb -p -1` fails with "Invalid option -1"

Also I can't use it as non-optional argument

OptionParser.new {|opts|
  opts.on('-n', 'no Pvalue argument, other arguments only') {}
}.parse!
puts ARGV

`ruby my_test.rb -1` also fails with "Invalid option -1"


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