Some operations throwing the exception reline/ansi.rb:246:in `winsize': Operation not supported by device - <STDIN> (Errno::ENODEV)

[vtamara]

Description

On OpenBSD/adJ 7.4 on a tmux session the exception Errno::ENODEV is thrown in the following scenario:

1. In a rails project create a file q.sh to run the application in development mode but in the background i.e:

   #!/bin/sh
   bin/rails s &

2. Execute the script

   % chmod +x ./q.sh
   % ./q.sh
   /var/www/bundler/ruby/3.3/gems/reline-0.5.3/lib/reline/ansi.rb:246:in `winsize': Operation not supported by device - <STDIN> (Errno::ENODEV)                    
       from /var/www/bundler/ruby/3.3/gems/reline-0.5.3/lib/reline/ansi.rb:246:in `get_screen_size'
       from /var/www/bundler/ruby/3.3/gems/reline-0.5.3/lib/reline/line_editor.rb:78:in `initialize'                              
       from /var/www/bundler/ruby/3.3/gems/reline-0.5.3/lib/reline.rb:542:in `new'  
       from /var/www/bundler/ruby/3.3/gems/reline-0.5.3/lib/reline.rb:542:in `block in core'                                                                   
       from /var/www/bundler/ruby/3.3/gems/reline-0.5.3/lib/reline.rb:80:in `initialize'   

Checking the source code of reline 0.5.3 in lib/reline/ansi.rb function get_screen_size I notice that you handle only the exception Errno::ENOTTY:

  def self.get_screen_size                                                                                                                                      
    s = @@input.winsize                                                                                                                                         
    return s if s[0] > 0 && s[1] > 0                                                                                                                            
    s = [ENV["LINES"].to_i, ENV["COLUMNS"].to_i]                                                                                                                
    return s if s[0] > 0 && s[1] > 0                                                                                                                            
    [24, 80]                                                                                                                                                    
  rescue Errno::ENOTTY                                                                                                                                          
    [24, 80]                                                                                                                                                    
  end    

IMHO it is the same problem described by @revolter and @forthrin in #537.

It has worked for me to add support for the Errno::ENODEV exception i.e changing

  rescue Errno::ENOTTY

for

  rescue Errno::ENOTTY, Errno::ENODEV

Terminal Emulator

tmux on xterm on OpenBSD/adJ 7.4

[forthrin]

@vtamara: WFM

  rescue Errno::ENOTTY, Errno::ENODEV

$ echo Foo | xargs ruby -r readline -e "puts 'Bar'"
Bar

When will this make it into the official Rubygems distribution?

[onemanteamsoftware]

winsize appears to be causing problems on windows 10 too, at least since the v0.5.0 release. Running bin/dev in a rails project results in:

> $ bin/dev
C:/ProgramData/Ruby32-x64/lib/ruby/gems/3.2.0/gems/reline-0.5.4/lib/reline/ansi.rb:246:in `winsize': Bad file descriptor - <STDIN> (Errno::EBADF)