Add basic projectionist support

[mluts]

Hello, few days ago i bothered to add support for https://github.com/tpope/vim-projectionist to my config files. Basically i use A shortcut to navigate between tests/source-code, i think it could be useful for other people.

Feel free to modify, thank you for this repo.

[jparise]

You could also set make to mix (for source files).

[jparise]

I prefer type: source to type: main, which follows the convention used by the Projectionist documentation. What do you think?

[hauleth]

I use type: lib

[jparise]

Are these additional lib/**/ and test/**/ entries necessary? The lib/*.ex / test/*.ex entries work well for me, even with file hierarchies.

[hauleth]

No, these aren't needed, quoting docs:

From a globbing perspective, "*" is actually a stand in for "**/*". For advanced cases, you can include both globs explicitly: "test/**/test_*.rb". When expanding with {}, the ** and * portions are joined with a slash. If necessary, the dirname and basename expansions can be used to split the value back apart.

[hauleth]

My configuration for projectionist looks like this:

let g:projectionist_heuristics['mix.exs'] = {
            \ 'apps/*/mix.exs': { 'type': 'app' },
            \ 'lib/*.ex': {
            \   'type': 'lib',
            \   'alternate': 'test/{}_test.exs',
            \   'template': ['defmodule {camelcase|capitalize|dot} do', 'end'],
            \ },
            \ 'test/*_test.exs': {
            \   'type': 'test',
            \   'alternate': 'lib/{}.ex',
            \   'template': ['defmodule {camelcase|capitalize|dot}Test do', '  use ExUnit.Case', '', '  @subject {camelcase|capitalize|dot}', '', '  doctest @subject', 'end'],
            \ },
            \ 'mix.exs': { 'type': 'mix' },
            \ 'config/*.exs': { 'type': 'config' },
            \ '*.ex': {
            \   'makery': {
            \     'lint': { 'compiler': 'credo' },
            \     'test': { 'compiler': 'exunit' },
            \     'build': { 'compiler': 'mix' }
            \   }
            \ },
            \ '*.exs': {
            \   'makery': {
            \     'lint': { 'compiler': 'credo' },
            \     'test': { 'compiler': 'exunit' },
            \     'build': { 'compiler': 'mix' }
            \   }
            \ }
            \ }

[kelvinst]

@hauleth I like your configuration, 👍 on configuring it that way... I would just add the dispatch config to it, since it's a well known package too

[hauleth]

@kelvinst no problem, however I use a little bit more powerful makery. That is why there is no Dispatch configuration.

[kelvinst]

Yep, realized that, will check that one someday, but for now I'm sticking with dispatch.

[kelvinst]

I opened a PR for @mluts branch there: mluts#1. The changes should fall here once he accepts (I hope, never did that before).

[sodapopcan]

This is quite old and doesn't look like there are any signs of it getting merged but just wanted to weigh in here:

I don't think it's a good idea for this to be included in this repo for the very reason outlined by the above convo and comments on the PR: projections.json files are very personal. I feel that anyone who has installed projectionist already has their own system for including their projections.

I think this type of thing would be best included under a "Tips" category or the like in the wiki or README.