Removed syntastic and replaced it with ale

Read more here:
https://github.com/w0rp/ale

sources_non_forked/ale/ale_linters/markdown/alex.vim

@@ -0,0 +1,11 @@
+" Author: Johannes Wienke <languitar@semipol.de>
+" Description: alex for markdown files
+
+call ale#linter#Define('markdown', {
+\   'name': 'alex',
+\   'executable': 'alex',
+\   'command': 'alex %s -t',
+\   'output_stream': 'stderr',
+\   'callback': 'ale#handlers#alex#Handle',
+\   'lint_file': 1,
+\})

sources_non_forked/ale/ale_linters/markdown/markdownlint.vim

@@ -0,0 +1,11 @@
+" Author: Ty-Lucas Kelley <tylucaskelley@gmail.com>
+" Description: Adds support for markdownlint
+
+call ale#linter#Define('markdown', {
+    \ 'name': 'markdownlint',
+    \ 'executable': 'markdownlint',
+    \ 'lint_file': 1,
+    \ 'output_stream': 'both',
+    \ 'command': 'markdownlint %s',
+    \ 'callback': 'ale#handlers#markdownlint#Handle'
+\ })

sources_non_forked/ale/ale_linters/markdown/mdl.vim

@@ -0,0 +1,40 @@
+" Author: Steve Dignam <steve@dignam.xyz>, Josh Leeb-du Toit <joshleeb.com>
+" Description: Support for mdl, a markdown linter.
+
+call ale#Set('markdown_mdl_executable', 'mdl')
+call ale#Set('markdown_mdl_options', '')
+
+function! ale_linters#markdown#mdl#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'markdown_mdl_executable')
+endfunction
+
+function! ale_linters#markdown#mdl#GetCommand(buffer) abort
+    let l:executable = ale_linters#markdown#mdl#GetExecutable(a:buffer)
+    let l:options = ale#Var(a:buffer, 'markdown_mdl_options')
+
+    return ale#Escape(l:executable)
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+endfunction
+
+function! ale_linters#markdown#mdl#Handle(buffer, lines) abort
+    " matches: '(stdin):173: MD004 Unordered list style'
+    let l:pattern = ':\(\d*\): \(.*\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'text': l:match[2],
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('markdown', {
+\   'name': 'mdl',
+\   'executable_callback': 'ale_linters#markdown#mdl#GetExecutable',
+\   'command_callback': 'ale_linters#markdown#mdl#GetCommand',
+\   'callback': 'ale_linters#markdown#mdl#Handle'
+\})

sources_non_forked/ale/ale_linters/markdown/proselint.vim

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+" Author: poohzrn https://github.com/poohzrn
+" Description: proselint for Markdown files
+
+call ale#linter#Define('markdown', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})

sources_non_forked/ale/ale_linters/markdown/redpen.vim

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+" Author: rhysd https://rhysd.github.io
+" Description: Redpen, a proofreading tool (http://redpen.cc)
+
+call ale#linter#Define('markdown', {
+\   'name': 'redpen',
+\   'executable': 'redpen',
+\   'command': 'redpen -f markdown -r json %t',
+\   'callback': 'ale#handlers#redpen#HandleRedpenOutput',
+\})

sources_non_forked/ale/ale_linters/markdown/remark_lint.vim

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+" Author rhysd https://rhysd.github.io/, Dirk Roorda (dirkroorda), Adrián González Rus (@adrigzr)
+" Description: remark-lint for Markdown files
+
+function! ale_linters#markdown#remark_lint#Handle(buffer, lines) abort
+    " matches: '  1:4  warning  Incorrect list-item indent: add 1 space  list-item-indent  remark-lint'
+    " matches: '  18:71-19:1  error  Missing new line after list item  list-item-spacing  remark-lint',
+    let l:pattern = '^ \+\(\d\+\):\(\d\+\)\(-\(\d\+\):\(\d\+\)\)\?  \(warning\|error\)  \(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:item = {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'type': l:match[6] is# 'error' ? 'E' : 'W',
+        \   'text': l:match[7],
+        \}
+        if l:match[3] isnot# ''
+            let l:item.end_lnum = l:match[4] + 0
+            let l:item.end_col = l:match[5] + 0
+        endif
+        call add(l:output, l:item)
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('markdown', {
+\   'name': 'remark-lint',
+\   'executable': 'remark',
+\   'command': 'remark --no-stdout --no-color %s',
+\   'callback': 'ale_linters#markdown#remark_lint#Handle',
+\   'lint_file': 1,
+\   'output_stream': 'stderr',
+\})

sources_non_forked/ale/ale_linters/markdown/textlint.vim

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+" Author: tokida https://rouger.info, Yasuhiro Kiyota <yasuhiroki.duck@gmail.com>
+" Description: textlint, a proofreading tool (https://textlint.github.io/)
+
+call ale#linter#Define('markdown', {
+\   'name': 'textlint',
+\   'executable_callback': 'ale#handlers#textlint#GetExecutable',
+\   'command_callback': 'ale#handlers#textlint#GetCommand',
+\   'callback': 'ale#handlers#textlint#HandleTextlintOutput',
+\})

sources_non_forked/ale/ale_linters/markdown/vale.vim

@@ -0,0 +1,9 @@
+" Author: chew-z https://github.com/chew-z
+" Description: vale for Markdown files
+
+call ale#linter#Define('markdown', {
+\   'name': 'vale',
+\   'executable': 'vale',
+\   'command': 'vale --output=JSON %t',
+\   'callback': 'ale#handlers#vale#Handle',
+\})

sources_non_forked/ale/ale_linters/markdown/write-good.vim

@@ -0,0 +1,9 @@
+" Author: Sumner Evans <sumner.evans98@gmail.com>
+" Description: write-good for Markdown files
+
+call ale#linter#Define('markdown', {
+\   'name': 'write-good',
+\   'executable_callback': 'ale#handlers#writegood#GetExecutable',
+\   'command_callback': 'ale#handlers#writegood#GetCommand',
+\   'callback': 'ale#handlers#writegood#Handle',
+\})