Vim plugin that colors text lines by their indentation level, with no other features. Like vimoutliner, but 100x to 1000x faster when opening large text files (>1 MB).
Activates on files with the ".not" extension. Identation can be either tabs- or spaces-based (4 per tab).
If a line begins with a single space it receives the special "subtext" green highlighting, irrespective of indentation level. An example is the "sint occaecat..." line in the screenshot below.
If you'd like other features added propose them at https://github.com/bmihai/nanootl/issues.
Example screenshot: