Error when opening file with ft=htmldjango in modeline about vim-css-color

[ap]

And if you remove the Plug line from your .vimrc, the error goes away?

[lithammer]

Hmm, yes, it seems you're correct. I'm using junegunn/vim-plug instead of the usual Vundle to load handle plugins.

And I was able to reproduce with the following setup:

$ cat .vimrc
call plug#begin()
call plug#end()
syntax on

$ tree .vim
.vim
├── README.md
├── after
│   └── syntax
│       ├── css.vim
│       ├── html.vim
│       ├── less.vim
│       ├── sass.vim
│       ├── stylus.vim
│       └── vim.vim
├── autoload
│   ├── css_color.vim
│   └── plug.vim
├── plugged
└── tests
    ├── bench
    ├── example.less
    ├── example.sass
    ├── example.stylus
    └── torture.css

It's funny though, as it seems like it only happens when setting ft=htmldjango via modeline with the combination of vim-plug and vim-css-color.

[ap]

So if you delete the after/syntax directory and autoload/css_color.vim, the error goes away?

[lithammer]

That's correct, just verified:

$ tree .vim
.vim
├── README.md
├── after
│   └── syntax
│       ├── css.vim
│       ├── html.vim
│       ├── less.vim
│       ├── sass.vim
│       ├── stylus.vim
│       └── vim.vim
├── autoload
│   ├── css_color.vim
│   └── plug.vim
└── tests
    ├── bench
    ├── example.less
    ├── example.sass
    ├── example.stylus
    └── torture.css

$ vim foo.html  # Throws the errors mentioned earlier

$ rm -rf .vim/after/syntax .vim/autoload/css_color.vim

$ vim foo.html  # No errors

[ap]

Finally spotted the problem. There you go.

For some reason, triggering the autocommand caused Vim to re-source the htmldjango.vim, which would load html.vim again, which is not safe against reloading in mid-flight due to the way that main_syntax gets checked and set, and the HtmlHiLink command gets defined and then deleted. Crazy stuff. Anyway, by abstaining from triggering the autocommand, the whole car crash doesn’t happen.

[lithammer]

Awesome, thank you!