This must be due to the ^C fix we did in 9.1.3 for #3721.

I don't know why it would cause this, though :-(

A workaround for you: I believe if you install the 1.0 jruby-readline gem from here you'll restore the old behavior.

@mkristian Perhaps it's time we made jruby-readline a real rubygems.org gem, so it's easier for folks to up/downgrade it as we make fixes.

Drat...installing the 1.0 gem does not seem to fix the problem. I'll look into this today.

Ok, here's a working workaround:

1. gem install that 1.0 jruby-readline gem
2. delete readline.jar from /lib/ruby/stdlib

The jar replacement fixes the issue. I agree the jruby-readline should become a real gem as otherwise this will remain a dirty fix.

Would this also impact pasting content? I'm seeing some extremely weird behavior there, although I haven't tried to isolate JRuby from all the other tools which might be impacting it.

@tobymurray-nanometrics On Windows? It certainly could.

@mkristian I tried to release a 1.1.1 gem with the regression reverted, but I'm not sure it's building the gem appropriately for rubygems.org. I can install the gem, but attempting to activate it produces the following error:

[] ~/projects/jruby-readline $ gem install jruby-readline
Successfully installed jruby-readline-1.1.1-java
1 gem installed

[] ~/projects/jruby-readline $ jruby -v -e 'gem "readline"; require "readline"'
jruby 9.1.4.0 (2.3.1) 2016-09-01 2e1327f Java HotSpot(TM) 64-Bit Server VM 25.92-b14 on 1.8.0_92-b14 +jit [darwin-x86_64]
Gem::MissingSpecError: Gem::MissingSpecError
  to_specs at /Users/headius/.rvm/rubies/jruby-9.1.4.0/lib/ruby/stdlib/rubygems/dependency.rb:308
   to_spec at /Users/headius/.rvm/rubies/jruby-9.1.4.0/lib/ruby/stdlib/rubygems/dependency.rb:320
       gem at /Users/headius/.rvm/rubies/jruby-9.1.4.0/lib/ruby/stdlib/rubygems/core_ext/kernel_gem.rb:65
    <main> at -e:1

I believe it should be possible to put out a release of the gem, and get existing JRuby versions to load it by using gem install --default jruby-readline combined with gem install jruby-readline in some order, but this indicates it's simply not loading right.

jruby-readline 1.1.1 released to rubygems and maven. The current workaround is

1. gem install jruby-readline
2. delete readline.jar from /lib/ruby/stdlib

This is still outstanding. @enebo: Should we revert the change to jruby-readline and release 9.1.6.0 with the reverted version?

@headius I feel this is more annoying than what happened in #3721 so yeah reverting feels like the lesser of two evils. I also hate second-classing windows users so perhaps this is a nice gesture :)

This is fixed with the release of jruby-readline-1.1.1, and jruby-9.1.6.0 release today will ship that.

I can confirm this is fixed on Windows w/ jruby-9.1.6.0

This issue seems to be back w/ jruby-9.1.16.0

This is broken again on Windows w/ jruby-9.1.16.0
@headius do we need new issue, or should we reopen this one?

FYI this work around seems to be working (taken in part from above in this thread):

1. gem install jruby-readline
2. copy readline.jar from gem installation to lib\ruby\stdlib

@hathawad may I ask which version of jruby-readline you are using ? as the version from jruby-9.1.16 should be the same (binary compatible) as jruby-readline-1.1.1

@hathawad may I ask which version of jruby-readline you are using ?

I had the same problem as @hathawad - it's the jruby-9.1.16.0\lib\ruby\stdlib\readline.jar "version" i.e. the standard lib not the gem. Replacing this jar with the one from the gem install fixes it.

@headius what is the take on this one here. are we going back to version 1.1.1 or wit until we get a reimplementation of readline ? can not remember the problems we resurrect with downgrading to 1.1.1

@hathawad Could you open a new issue please? We want to keep the lineage of what was "fixed" when, even if it regresses.

Sure

Opened #5687 for 9.2.x

Just to note that I am using JRuby 9.2.5.0, and also have this problem. The trick of using the jruby-readline, and copying either the one file or all the files failed to solve it; I just got an error:

no such file to load -- jline/jline/2.11/jline-2.11 (LoadError)
do_require at C:/jruby-9.2.5.0/lib/ruby/stdlib/jar_dependencies.rb:356
...