Problem with short operations + underscores

[rlpowell]

Given:

  parser = Trollop::Parser.new do
    opt :silent, %q{Causes the script to not ask any questions, instead all questions turn into email + abort; used by cron}, :short => 's'
    opt :region, %q{Causes the script only work on the listed region}, :short => 'r', :type => String
    opt :noinst, %q{Causes the script to skip the checking of all instances}, :short => 'i'
  end

Running it with -i gives us:

  {:silent=>false,
   :region=>nil,
   :noinst=>true,
   :help=>false,
   :noinst_given=>true}

However, given:

  parser = Trollop::Parser.new do
    opt :silent, %q{Causes the script to not ask any questions, instead all questions turn into email + abort; used by cron}, :short => 's'
    opt :region, %q{Causes the script only work on the listed region}, :short => 'r', :type => String
    opt :no_instances, %q{Causes the script to skip the checking of all instances}, :short => 'i'
  end

which is what I had originally, running it with -i gives:

  {:silent=>false,
   :region=>nil,
   :no_instances=>false,
   :help=>false,
   :no_instances_given=>true}

which strikes me as wrong.

[Fryguy]

There is special logic for flags starting with 'no' to account for
supporting negation of normal flags. I think you can specify a default to
get your desired affect. Another option is to code for the positive and
set a default.

See this blog post for more detail.
http://masanjin.net/blog/trollop-2.0-released
Does that help explain it?
On Jan 26, 2015 9:48 PM, "rlpowell" notifications@github.com wrote:

Given:

parser = Trollop::Parser.new do
opt :silent, %q{Causes the script to not ask any questions, instead all questions turn into email + abort; used by cron}, :short => 's'
opt :region, %q{Causes the script only work on the listed region}, :short => 'r', :type => String
opt :noinst, %q{Causes the script to skip the checking of all instances}, :short => 'i'
end

Running it with -i gives us:

{:silent=>false,
:region=>nil,
:noinst=>true,
:help=>false,
:noinst_given=>true}

However, given:

parser = Trollop::Parser.new do
opt :silent, %q{Causes the script to not ask any questions, instead all questions turn into email + abort; used by cron}, :short => 's'
opt :region, %q{Causes the script only work on the listed region}, :short => 'r', :type => String
opt :no_instances, %q{Causes the script to skip the checking of all instances}, :short => 'i'
end

which is what I had originally, running it with -i gives:

{:silent=>false,
:region=>nil,
:no_instances=>false,
:help=>false,
:no_instances_given=>true}

which strikes me as wrong.

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#37.

[rlpowell]

That does, although now the bug is "this doesn't seem to be mentioned in the documentation anywhere" :)

I'm looking at http://www.rubydoc.info/gems/trollop/2.1.1 and http://www.rubydoc.info/gems/trollop/2.1.1/Trollop/Parser

[kbrock]

@ripowell thanks for bringing this up. Any suggestions for the docs?