Bug #15944: Simultaneous line feeding and scrolling doesn't work well with irb on tmux

• Status: Closed
• Assignee: aycabta (aycabta .)
• Target version: -
• ruby -v: ruby 2.7.0dev (2019-06-17T21:05:43Z trunk 39a8c71424) [x86_64-linux]
• Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN

[hasumikin (hitoshi hasumi)]

See attached capture.

I just entered 1+1 repeatedly.
(1+1 doesn't matter, whatever can cause the same behavior)

The problem is that the line of the expression irb(main):xxx:0> 1+1 will disappear when the window scrolls.

This is a bottom of the capture:

irb(main):041:0> 1+1
=> 2
=> 2
=> 2
irb(main):044:0>

It should have been like following:

irb(main):041:0> 1+1
=> 2
irb(main):042:0> 1+1
=> 2
irb(main):043:0> 1+1
=> 2
irb(main):044:0>

This behavior seems to appear only on tmux.

[shugo (Shugo Maeda)]

• Assignee set to aycabta (aycabta .)

[hasumikin (hitoshi hasumi)]

• Description updated (diff)

[mame (Yusuke Endoh)]

• Status changed from Open to Closed

Thank you for the reporting. It does not reproduce now. IRB is now actively developed, so I guess it is already fixed. If not, feel free to reopen.