buffer renamed "expand(" on save

[msprev]

This issue has plagued me for years in MacVim and I have not been able to identify the source. It is intermittent, and occurs roughly 1 every 100 hundred saves (so probably 2 or 3 times per day). I cannot say what triggers it but I have not been able to make it go away. Any advice or fix gratefully received.

What happens:

• I hit <D-s> to save current buffer, which is already associated with a filename
• the buffer is not saved
• current buffer is magically renamed expand(, the contents are unaffected
• editing continues as normal (If I try to save again, then a new file called expand( is saved to disk).

Environment

• Vim version 8.2
• MacOS 11.6
• Terminal: GUI

[eirnym]

Hey @msprev Could you share your configuration for an investigation?

I never had such situation and I suppose that somewhere there's a small bug.

[msprev]

Thank you! I've pasted my vimrc configuration here if you can spot anything there that would cause it: https://gist.github.com/msprev/95271315a2357ab985b963e800b5a73f