pry-rails: Encoding::UndefinedConversionError

When I paste “ñ” (with quotes) in to the console with pry-rails (0.3.3) enabled I will get an Encoding::UndefinedConversionError error.

$ bundle exec rails console
main:0>"��"
/Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/history.rb:106:in `write': "\xC3" from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError)
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/history.rb:106:in `puts'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/history.rb:106:in `save_to_file'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/history.rb:50:in `call'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/history.rb:50:in `push'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:267:in `handle_line'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:243:in `block (2 levels) in eval'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:242:in `catch'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:242:in `block in eval'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:241:in `catch'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:241:in `eval'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/repl.rb:77:in `block in repl'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/repl.rb:67:in `loop'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/repl.rb:67:in `repl'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/repl.rb:38:in `block in start'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/input_lock.rb:61:in `call'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/input_lock.rb:61:in `__with_ownership'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/input_lock.rb:79:in `with_ownership'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/repl.rb:38:in `start'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/repl.rb:15:in `start'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/pry-0.10.1/lib/pry/pry_class.rb:169:in `start'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-3.2.21/lib/rails/commands/console.rb:47:in `start'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-3.2.21/lib/rails/commands/console.rb:8:in `start'
    from /Users/lukec/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-3.2.21/lib/rails/commands.rb:41:in `<top (required)>'
    from script/rails:6:in `require'

If I disable pry-rails in my Gemfile I get the expected output.

$ bundle exec rails console
Loading development environment (Rails 3.2.21)
irb(main):001:0> "ñ"
=> "ñ"

I’d love to get to the bottom of this, so please let me know if there’s any additional information I can provide.

About this issue

Original URL
State: open
Created 9 years ago
Comments: 18 (1 by maintainers)

Most upvoted comments

http://altarf.net/computer/rails/3222

add ~/.pryrc with content

Pry.config.history.should_save = false

and it works for me.

+10

chunlea on Feb 13, 2017

Had same error on Linux in Docker image. Problem was in system locale settings (it was set to POSIX).

Fixed by setting locale to Unicode-enabled one:

FROM ruby:2.6.2
RUN apt-get update && apt-get install -y locales && update-locale LANG=C.UTF-8 LC_ALL=C.UTF-8
ENV LANG=C.UTF-8 LC_ALL=C.UTF-8

In your local system check output of locale command and add export LANG=C.UTF-8 LC_ALL=C.UTF-8 to your ~/.bashrc or ~/.zshrc if necessary

Envek on Mar 21, 2019

I’ve solved this. refer to pry/pry#230420454

jsnick on Jul 5, 2016

I was able to “fix” this by adding this line in:

/Users/<username>/.rvm/gems/ruby-2.7.5/gems/pry-0.13.1/lib/pry/history.rb

def save_to_file(line)
  history_file.puts line.encode('UTF-8', invalid: :replace, undef: :replace, replace: '?') if history_file
end

Of course the issue is still there, so I opened an issue in RbReadline (see https://github.com/ConnorAtherton/rb-readline/issues/163)

Overload119 on Nov 4, 2022

Removing rb-readline solved the issue for me.

lcowell on Jan 15, 2016

milesbissky on Jan 5, 2016

mgrachev on Nov 28, 2015

yoonsy on Nov 14, 2015