Vim: ModeHandler: error handling key

[mvolkmann]

• Issue Type: Bug
• Extension Name: vim
• Extension Version: 1.0.1
• OS Version: Darwin x64 18.0.0
• VSCode version: 1.31.0-insider

Describe the bug
About two weeks ago I started frequently getting errors like "ModeHandler: error handling key=l. err=TypeError: Cannot read property 'position' of undefined." This appears in dialog in the lower-right of VS Code that I can dismiss, but it comes back frequently.

To Reproduce
Steps to reproduce the behavior:

1. Use normal Vim keys to move the cursor.
2. See error after some period of time, not immediately.

Expected behavior
Don't display this error message.

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        "codeLoadingTime": 430,
        "activateCallTime": 4,
        "activateResolvedTime": 210,
        "activationEvent": "*"
    }
}

[triplepointfive]

Easily reproducing when trying to go to mark which is unset yet.
E.g. 'a produces an error, but after ma it won't

[mlynch]

Getting these kinds of errors all over the place now. Here's another one:

[jpoon]

I'm on mobile so excuse brevity. The changelog is always a good place to take a look.

In v1.0.0, we now present errors as notification windows. These were previously outputted to console and not very discoverable. If you wish to continue living in bliss/ignorance of extension errors it's configurable. See the readme.

[nearwood]

Vim: 1.0.2
Windows x64 10.0.16299
VSCode: 1.30.2

I received the <C-d> error but this has already been fixed I believe.

I now get, occasionally, when trying to use backspace:
ModeHandler: error handling key=<BS>. err=Error: Illegal argument: character must be non-negative.

Not sure exactly when this occurs, but it seems to be occurring when modifying whitespace before any characters (JSX source code).

Going out of insert mode and back in is a workaround.

[renestalder]

I also have the same issue

ModeHandler: error handling key=<BS>. err=Error: Illegal argument: character must be non-negative.

When in insert mode of a CSS file and pressing backspace on the beginning of an empty line to try to delete this line.

[halu886]

when I want use `to skip the position that I not create the mark
then pop the error.
For example,normal mode。
click to `m

[citosid]

This error happens to me also. For me it is pretty simple to duplicate:

[J-Fields]

It seems a few different issues are being discussed here. For the "character must be non-negative" one, I created #3915 which is fixed by #3916.