Bug #14676: On Windows Readline's input is not correctly filled after autocomplete

• Status: Third Party's Issue
• Assignee: -
• Target version: -
• ruby -v: ruby 2.5.1p57 (2018-03-29 revision 63029) [x64-mingw32]
• Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN

[graywolf (Gray Wolf)]

When Readline.completion_proc returns more than one match, you are presented with empty line insted of what you have already put in.

require 'readline'
Readline.completion_proc = Proc.new do |word|
  ['foo', 'bar']
end
while buf = Readline.readline('> ')
  pp buf
end

You will end up with

> aa<TAB>
bar  foo
> <ENTER>
""

Works as expected on linux.

[graywolf (Gray Wolf)]

Works when the string is actual prefix for the completion.

require 'readline'
Readline.completion_proc = Proc.new do |word|
  ['aafoo', 'aabar']
end
while buf = Readline.readline('> ')
  pp buf
end

produces

> aa<TAB>
aabar  aafoo
> aa<ENTER>
"aa"

However, it would still be nice to have it behave same way on linux and windows.

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Third Party's Issue

It's issue of https://github.com/ConnorAtherton/rb-readline