Description
Opening and editing Vue files can be slow (#95) since vim-vue loads every supported language that is installed. This is holding us back from adding new languages (#97 (comment), #127, #67 (comment)) because that would make it even slower.
We need a way to load only the syntax scripts for the current file. I already started some work this on the performance-enhancement branch: 265f991. This, however, will only load the languages when opening a file, so when you add or change the outer tags you must reload the file using :e. This can become irritating, so it would be nice to load syntax scripts automatically when they're needed.
I like the approach of vader.vim. For every change, it checks to see if a new language has been embedded on the current line, and loads the corresponding syntax script.