flycheck-color-mode-line does not colorize properly the powerline

[arranger1044]

I am not able to have flycheck-color-mode-line coexist properly with powerline since it does not colorize the endings of the separators as show in this picture:

Here is my configuration:

;; powerline
(require 'powerline)
(powerline-center-theme)
;; flycheck-color-mode-line
(require 'flycheck-color-mode-line)
(eval-after-load "flycheck"
    '(add-hook 'flycheck-mode-hook 'flycheck-color-mode-line-mode))

but I suspect I'm missing something

[syl20bnr]

@arranger1044 I noticed this using some other themes like zenburn, I will check if I can find a way to make the powerline works with all themes.

[cdlm]

Not sure it's exactly related, mode-line is hardcoded as the face that's remapped. That might be a sensible default, but wouldn't making that configurable help? The use-case I'm thinking of is coloring just a single component of my modeline, that should stay colored in inactive modelines as well.

[vmalloc]

Anybody have any idea how to fix this? I'm also unable to get this mode to work properly with powerline...

[mattfidler]

You can add the following after you load powerline

(defun pl/background-color (face)
  (let ((face face)
    (fa (assoc face face-remapping-alist)))
    (when fa
      (setq face (car (cdr fa))))
    (face-attribute face
            (if (face-attribute face :inverse-video nil 'default)
            :foreground
              :background)
            nil
            'default)))

I have added a pull request to try to fix this properly.

[mattfidler]

This doesn't completely fix the issue. You have to call the powerline separators with the new fonts. Otherwise, it memoizes the wrong colors.

I fixed it in ergoemacs-status by the following function

(defun ergoemacs-status--sep (dir &rest args)
  "Separator with DIR.
The additional ARGS are the fonts applied.  This uses `powerline' functions."
  (let ((separator (and (fboundp #'powerline-current-separator)
            (intern (format "powerline-%s-%s"
                    (powerline-current-separator)
                    (or (and (eq dir 'left)
                         (car powerline-default-separator-dir))
                        (cdr powerline-default-separator-dir))))))
    (args (mapcar
           (lambda(f)
         (let ((fa (assoc f face-remapping-alist)))
           (if fa
               (car (cdr fa))
             f)))
           args)))
    (when (fboundp separator)
      (let ((img (apply separator args)))
    (when (and (listp img) (eq 'image (car img)))
      (propertize " " 'display img
              'face (plist-get (cdr img) :face)))))))

If you use this function in your powerline theme, it will work since powerline will memoize the remapped fonts.

[kootenpv]

@mattfidler Could you please elaborate? How can we use this as a fix? Thanks!