Vim Elm Help
This plugin allows you to view documentation for any Elm dependencies your project has, both directly from within Vim as well as offline.
I wrote this plugin at elm-conf because I was working on some Elm code on the plane on my way to elm-conf, and I didn't like having to view the source of my dependencies to remember how to use certain functions. I also don't like viewing reference documentation in a web browser; I much prefer the offline, in-editor experience that plugins like manpageview and perlhelp provide when I'm working in C and Perl, respectively.
Since I wrote this hurriedly at a conference, it was rather hastily put together. It works for me, but your mileage may vary. That being said, I would love it if people played around with this and helped me out with contributions or comments!
IMPORTANT: You need to do this part while online! After it's done, you're freeeeeee
:ElmBuildDocs command will build a documentation database and put it into
elm-docs.json at your project root.
Alternatively, you may do this from the command line, like so...
bin/build-docs.pl from the top level of your Elm project, and direct its output
$ build-docs.pl > elm-docs.json
plugin/elm-help.vim however you like.
If you run the
ElmHelp command with an argument, the documentation for
that argument will be pulled up in a new window. For example,
If you don't provide an argument,
ElmHelp will use whatever word is under the cursor.
Ideas for improvement
There are many!
- You need to be online to build the docs themselves, which is less than ideal
- (related to above) Each module you use has its dependencies fetched, even if you have it in
- Doesn't generate docs for modules in your current project (this would be easy)
- Don't cache the current module, though
- Render markdown as text for docs pane (including transclusion of
- Make links to other docs followable via
Ctrl-]in docs pane
- Tab complete symbols on Vim command line
- Parse import statements in current buffer to find out what unqualified or alias-qualified identifiers resolve to, keeping in mind which symbols are imported from core by default
- Hovering over a symbol could automatically show its documentation
- Showing the docs in a preview window would be nice
- Using the same window for show docs (instead of opening up a new one for each query) would be a fine alternative to the preview window
- Offer omnicompletion for imports, exposing, after a dot
- You could potentially provide gd and gD with this information
- Write help file