Ignored project files are also getting cached

[kaushalmodi]

Expected behavior

Files from ignored projects should not be cached.

Actual behavior

Files from ignored projects are cached.

Steps to reproduce the problem

Ignore some project and then open some file in that project. You will see a message in the minibuffer that that file is getting cached (even when the project is ignored).

Environment & Version information

Projectile version information

Projectile version: 20160708.522

Emacs version

Emacs version: GNU Emacs 25.1.50.16 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.23)
 of 2016-07-10, built using commit 466ee1b3ea76425d201b5d59950e88251870c836.

Operating system

RHEL 6.6

My temporary solution

(defun modi/advice-projectile-dont-cache-ignored-projects (&rest args)
  "Do not cache files from ignored projects when doing `find-file'."
  (let* ((project-root (projectile-project-p))
         (do-not-cache (projectile-ignored-project-p project-root)))
    do-not-cache))
(advice-add 'projectile-cache-files-find-file-hook :before-until
            #'modi/advice-projectile-dont-cache-ignored-projects)

[kaushalmodi]

#1025

[bbatsov]

Fix by #1025.