oils.vim

> `[` in one context is an index, in another it’s test. vim can match both, but it can’t decide which meaning is active unless the outer mode is remembered. and that’s the gap ysh.vim solves exactly that problem. The [ in command mode (test) is not highlighted. In contrast, the [ within expressions like a[i] is highlighted (currently Normal, but you can make it any color - https://github.com/oils-for-unix/oils.vim/blob/main/syntax/l... ) Again I recommend trying it. Verify what you think the bugs are. I think you have some preconceptions based on using other Vim plugins. Vim's model is powerful enough to write good plugins, or bad plugins. That is one of the main points of this article.

Yeah after writing this highlighter, I started noticing what I consider bugs in other highlighters e.g. although Vim's syntax highlighting helped me learn shell, it highlights numbers like 'echo 42' in a special way, which is misleading, because shell doesn't have numbers. (On the other hand, YSH does, but not in 'echo 42' either!) On the other hand, there are also language design issues. Shell also allows MULTIPLE here docs, and I claim that ZERO syntax highlighters handle it correctly - https://github.com/oils-for-unix/oils.vim/blob/main/demo/bad... (YSH removes here docs in favor of Python-like multi-line strings) --- But the "surprise" in this article is that Vim is powerful, and you can write a good syntax highlighter or a bad one. There are many possible "programs" to write in this paradigm I'd also say "completely accurate" high

Nested is also demonstrated by stage 2 fixing the "nested double quotes bug". Screenshots: https://github.com/oils-for-unix/oils.vim/blob/main/doc/stag... Stage 1 is non-recursive, but stage 2 is recursive.

no memory of nesting It absolutely nests! Vim's model has recursion, and it works perfectly. Some details here: https://github.com/oils-for-unix/oils.vim/blob/main/doc/stag... This highlighter is extremely accurate, and I would call it correct. I list about 3 known issues here, and they are all fixable/expressible in Vim's model: https://github.com/oils-for-unix/oils.vim/blob/main/doc/algo... Please install it, and file bugs with any inaccuracies. If YSH code is valid, it should not be mis-highlighted. There is test data in false-postive.ysh and false-negative.ysh. Try to break it! --- There are lots of Vim/Textmate plugins that are buggy, but it doesn't mean that all such plugins are. generate semantic tokens outside I'd also say that this doesn't really help, since I believe Tree-sitter is the most common way of doing that. I sho

(author here) I just noticed this link doesn’t work on my iPad because of the captcha – this is the same content: https://github.com/oils-for-unix/oils.vim/blob/main/doc/algo...