9fans / plan9port

Plan 9 from User Space
https://9fans.github.io/plan9port/
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Bug: Acme: The first visible line sometimes disappears after Undo #678

Open spektrokalter opened 1 month ago

spektrokalter commented 1 month ago

Steps to reproduce the problem

It's difficult to identify exactly what causes this behavior. But I have found a reproducible scenario.

Create a new window with the following content:

line disappears (<find /usr/bin |sort)

Select <find /usr/bin |sort with button 1 and execute it. Scroll a bit and run Undo. "line disappears (" shouldn't be visible by now.

plan9port version

a2567fcac9851e5cc965a236679f568b0e79cff2 on macOS 14.5 (23F79)

20240617-1 on Arch Linux