Add textlint flycheck checker

lisp/init-flycheck.el

 (add-hook 'after-init-hook #'global-flycheck-mode)
 (add-hook 'c++-mode-hook (lambda () (setq flycheck-gcc-language-standard "c++11")))
 
+;; textlint
+;; https://www.macs.hw.ac.uk/~rs46/posts/2018-12-29-textlint-flycheck.html
+(flycheck-define-checker textlint
+  "A linter for textlint."
+  :command ("npx" "textlint"
+            "--config" "~/.emacs.d/.textlintrc"
+            "--format" "unix"
+            "--rule" "write-good"
+            "--rule" "no-start-duplicated-conjunction"
+            "--rule" "max-comma"
+            "--rule" "terminology"
+            "--rule" "period-in-list-item"
+            "--rule" "abbr-within-parentheses"
+            "--rule" "alex"
+            "--rule" "common-misspellings"
+            "--rule" "en-max-word-count"
+            "--rule" "diacritics"
+            "--rule" "stop-words"
+            "--plugin"
+            (eval
+             (if (derived-mode-p 'tex-mode)
+                 "latex"
+               "@textlint/text"))
+            source-inplace)
+  :error-patterns
+  ((warning line-start (file-name) ":" line ":" column ": "
+            (message (one-or-more not-newline)
+                     (zero-or-more "\n" (any " ") (one-or-more not-newline)))
+            line-end))
+  :modes (text-mode latex-mode org-mode markdown-mode)
+  )
+(add-to-list 'flycheck-checkers 'textlint)
+
 (provide 'init-flycheck)