Macvim: MacVim Release 155 appears to be broken

[flaugher]

I just now was prompted by MacVim to upgrade to the latest release. When I allowed MacVim to perform the update and restart, I immediately began getting the following errors when I tried to enter using insert mode:

Error detected while processing function <SNR>49_HighLightEOLWhitespaceExceptionCurrentLine: line 1: E461: Illegal variable name: a:exclude_current_line_eol_whitespace_pattern Press ENTER or type command to continue.

I have MacVim 8.1.950 (155) running on macOS 10.12.6.

[ychin]

I couldn't reproduce this. I searched online and seems like you are using https://github.com/ntpeters/vim-better-whitespace? I downloaded the plugin and it still works fine.

The variable (exclude_current_line_eol_whitespace_pattern) that your logs show seems to indicate it's an old build as it was removed in https://github.com/ntpeters/vim-better-whitespace/pull/100. I would suggest updating the plugin and/or re-downloading it.

If the issue persists, try running MacVim with mvim -u NONE -U NONE (in general it's a good idea to do so to help isolate problems) and that fixes the problem, you may want to file the issue with the plugin's repo.

[ychin]

Looking more into it I'm pretty sure you just need to update your plugin. Vim has recently introduced a new behavior that tightened the restrictions on writing VimScript, and you can no longer assign to a: variables. The older version of the plugin has a bug of writing to a: that gets exposed in the new version of Vim.

If you can confirm the new version of the plugin fixes the issue, please close the issue.

[manojkumarm]

Updating the plugin fixed the error for me; thanks a lot @ychin 👍

[ychin]

Closing, since this can be fixed by updating plugin.