Merge pull request #1012 from gosukiwi/patch-1
Add instructions for setting up Lightline
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README.md
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README.md
@ -36,13 +36,14 @@ servers with similar enough protocols, like `tsserver`.
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2. [How can I keep the sign gutter open?](#faq-keep-signs)
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3. [How can I change the signs ALE uses?](#faq-change-signs)
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4. [How can I show errors or warnings in my statusline?](#faq-statusline)
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5. [How can I change the format for echo messages?](#faq-echo-format)
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6. [How can I execute some code when ALE stops linting?](#faq-autocmd)
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7. [How can I navigate between errors quickly?](#faq-navigation)
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8. [How can I run linters only when I save files?](#faq-lint-on-save)
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9. [How can I use the quickfix list instead of the loclist?](#faq-quickfix)
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10. [How can I check JSX files with both stylelint and eslint?](#faq-jsx-stylelint-eslint)
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11. [Will this plugin eat all of my laptop battery power?](#faq-my-battery-is-sad)
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5. [How can I show errors or warnings in my lightline?](#faq-lightline)
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6. [How can I change the format for echo messages?](#faq-echo-format)
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7. [How can I execute some code when ALE stops linting?](#faq-autocmd)
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8. [How can I navigate between errors quickly?](#faq-navigation)
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9. [How can I run linters only when I save files?](#faq-lint-on-save)
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10. [How can I use the quickfix list instead of the loclist?](#faq-quickfix)
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11. [How can I check JSX files with both stylelint and eslint?](#faq-jsx-stylelint-eslint)
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12. [Will this plugin eat all of my laptop battery power?](#faq-my-battery-is-sad)
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<a name="supported-languages"></a>
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@ -408,9 +409,70 @@ set statusline=%{LinterStatus()}
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See `:help ale#statusline#Count()` for more information.
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<a name="faq-lightline"></a>
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### 5.v. How can I show errors or warnings in my lightline?
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[lightline](https://github.com/itchyny/lightline.vim) does not have built-in
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support for ALE, nevertheless it's easy to do it yourself:
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```vim
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" This is regular lightline configuration, we just added
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" 'linter_warnings', 'linter_errors' and 'linter_ok' to
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" the active right panel. Feel free to move it anywhere.
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" `component_expand' and `component_type' are required.
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"
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" For more info on how this works, see lightline documentation.
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let g:lightline = {
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\ 'active': {
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\ 'right': [ [ 'lineinfo' ],
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\ [ 'percent' ],
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\ [ 'linter_warnings', 'linter_errors', 'linter_ok' ],
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\ [ 'fileformat', 'fileencoding', 'filetype' ] ]
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\ },
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\ 'component_expand': {
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\ 'linter_warnings': 'LightlineLinterWarnings',
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\ 'linter_errors': 'LightlineLinterErrors',
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\ 'linter_ok': 'LightlineLinterOK'
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\ },
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\ 'component_type': {
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\ 'linter_warnings': 'warning',
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\ 'linter_errors': 'error',
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\ 'linter_ok': 'ok'
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\ },
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\ }
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autocmd User ALELint call lightline#update()
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" ale + lightline
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function! LightlineLinterWarnings() abort
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let l:counts = ale#statusline#Count(bufnr(''))
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let l:all_errors = l:counts.error + l:counts.style_error
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let l:all_non_errors = l:counts.total - l:all_errors
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return l:counts.total == 0 ? '' : printf('%d --', all_non_errors)
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endfunction
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function! LightlineLinterErrors() abort
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let l:counts = ale#statusline#Count(bufnr(''))
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let l:all_errors = l:counts.error + l:counts.style_error
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let l:all_non_errors = l:counts.total - l:all_errors
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return l:counts.total == 0 ? '' : printf('%d >>', all_errors)
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endfunction
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function! LightlineLinterOK() abort
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let l:counts = ale#statusline#Count(bufnr(''))
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let l:all_errors = l:counts.error + l:counts.style_error
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let l:all_non_errors = l:counts.total - l:all_errors
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return l:counts.total == 0 ? '✓' : ''
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endfunction
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```
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See `:help ale#statusline#Count()` and [lightline documentation](https://github.com/itchyny/lightline.vim#advanced-configuration)
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for more information.
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<a name="faq-echo-format"></a>
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### 5.v. How can I change the format for echo messages?
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### 5.vi. How can I change the format for echo messages?
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There are 3 global options that allow customizing the echoed message.
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@ -435,7 +497,7 @@ Will give you:
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<a name="faq-autocmd"></a>
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### 5.vi. How can I execute some code when ALE stops linting?
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### 5.vii. How can I execute some code when ALE stops linting?
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ALE runs its own [autocmd](http://vimdoc.sourceforge.net/htmldoc/autocmd.html)
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event whenever has a linter has been successfully executed and processed. This
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@ -450,7 +512,7 @@ augroup END
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<a name="faq-navigation"></a>
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### 5.vii. How can I navigate between errors quickly?
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### 5.viii. How can I navigate between errors quickly?
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ALE offers some commands with `<Plug>` keybinds for moving between warnings and
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errors quickly. You can map the keys Ctrl+j and Ctrl+k to moving between errors
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@ -466,7 +528,7 @@ For more information, consult the online documentation with
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<a name="faq-lint-on-save"></a>
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### 5.viii. How can I run linters only when I save files?
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### 5.ix. How can I run linters only when I save files?
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ALE offers an option `g:ale_lint_on_save` for enabling running the linters
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when files are saved. This option is enabled by default. If you only
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@ -486,7 +548,7 @@ files, you can set `g:ale_lint_on_save` to `0`.
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<a name="faq-quickfix"></a>
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### 5.ix. How can I use the quickfix list instead of the loclist?
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### 5.x. How can I use the quickfix list instead of the loclist?
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The quickfix list can be enabled by turning the `g:ale_set_quickfix`
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option on. If you wish to also disable the loclist, you can disable
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@ -513,7 +575,7 @@ let g:ale_keep_list_window_open = 1
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<a name="faq-jsx-stylelint-eslint"></a>
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### 5.x. How can I check JSX files with both stylelint and eslint?
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### 5.xi. How can I check JSX files with both stylelint and eslint?
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If you configure ALE options correctly in your vimrc file, and install
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the right tools, you can check JSX files with stylelint and eslint.
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@ -546,7 +608,7 @@ no linter will be run twice for the same file.
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<a name="faq-my-battery-is-sad"></a>
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### 5.xi. Will this plugin eat all of my laptop battery power?
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### 5.xii. Will this plugin eat all of my laptop battery power?
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ALE takes advantage of the power of various tools to check your code. This of
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course means that CPU time will be used to continuously check your code. If you
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