gvim (windows) freezes when opening a file already openend in another Vim (with "simalt ~x" in GUIEnter) #2192
Description
This was introduced somewhere between 8.0.69 and 8.0.586 and can still be reproduced in the latest nighlty. Last tested with 1159.
To reproduce:
- use a blank _vimrc with just "au GUIEnter * simalt ~x"
- gvim test.txt
- :w
- leave the instance open and start another vim: gvim test.txt
-> The second instance is opened and freezes (uses CPU and does not respond to keyboard or mouse input)
Use case for using two instances of vim on the same file: Do some coding in a source file in the first instance and view the local changes in a source control system (which launches a gvim -d file_in_working_copy pristine_copy_of_file)