Document how to automatically run ansible-lint inside code editors, e.g. flycheck in emacs

[omsai]

Issue Type

• Feature request

Ansible and Ansible Lint details

$ ansible --version
ansible 2.8.2
  config file = /home/pan14001/src/ansible-hpc-storrs/ansible.cfg
  configured module search path = ['/home/pan14001/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']                                                                           
  ansible python module location = /home/pan14001/.local/lib64/python3.6/site-packages/ansible
  executable location = /home/pan14001/.local/bin/ansible
  python version = 3.6.5 (default, May 21 2019, 11:44:44) [GCC 8.3.0]

$ ansible-lint --version
ansible-lint 4.1.0

• ansible installation method: ☑ pip
• ansible-lint installation method: ☑ pip

Desired Behaviour

Please update the documentation to explain how to integrate ansible-lint with code editors. My particular interest is to have ansible-lint run using flycheck in emacs.

The git hooks are less useful than seeing lint messages inside of a code editor; one can several files and then have to spend a lot of time after the fact trying to correct issues instead of being advised early on.

[Perdu]

Here's what I ended up writing in my .emacs:

;;; ansible-lint
; Compile regex for ansible-lint
(require 'compile)
(add-to-list 'compilation-error-regexp-alist
             'yaml)
(add-to-list 'compilation-error-regexp-alist-alist
             '(yaml "^\\(.*?\\):\\([0-9]+\\)" 1 2)
             )

; Replace make -k with ansible-lint, with an UTF-8 locale to avoid crashes
(defun ansible-lint-errors ()
  (make-local-variable 'compile-command)
  (let ((ansiblelint_command "ansible-lint ") (loc "LANG=C.UTF-8 "))
    (setq compile-command (concat loc ansiblelint_command buffer-file-name)))
)
(add-hook 'yaml-mode-hook 'ansible-lint-errors)

Then you can use the classical compile workflow (M-x compile or Alt+F9)

I pushed a PR with a similar code to the ansible mode repository so that it's integrated with ansible-mode.