Unable to open new window

Hate to open this issue as I have no clue how to reproduce, and I currently have it fixed...for now...

Occasionally when I attempt to open MacVim, I'll get a single icon in the Dock for it (and the menu bar), but no window. It doesn't matter if I'm trying to open a blank file or passing in a file to open -- typically from an external app like Perforce/P4V. If I try to File > Open... and select a file, it will close the app down.

I tried looking in ~/Library/Logs for anything, but it doesn't look like it's writing anything there. At least not that I could find.

The only resolve I've found is to close the app, delete ~/viminfo and ~/.vimrc (or just rename to something like ~/vimrc), reopen MacVim. Then I can bring my ~/.vimrc back and things work fine again. For awhile.

I'm currently on 8.0.1420 (144), but I've encountered this on past versions as well. Usually my first step is to make sure I'm on the latest release. Let me know if there's something I should do now while it's still working to prep for the next time it happens. Or what I should look for next time it does.

首先检查报告中的 MacVim 启动和 File > Open 行为，包括与 P4V 等外部应用的交互。比较 ~/viminfo 和 ~/.vimrc 存在时的行为与将它们临时重命名后的行为，并在下次出现问题时收集诊断信息。完成的标准是找到可复现的原因，并验证修复有效，或提供明确的诊断指导。