Re: howto define dynamic color with gnus-summary-line-format

[Bastien]

haomiao <miaohaoz@ustc.edu> writes:

> (defun gnus-user-format-function-z (header)
>    "test dynamic color"
>    (if  (string=
>            (format-time-string "%m%d")
>            (format-time-string
>               "%m%d"
>               (safe-date-to-time (mail-header-date header))))
>       ;; then
>       (set-face-foreground 'face-3 "red")
>       ;; else
>       (set-face-foreground 'face-3 "blue"))
>    "")

Don't use `set-face-foreground'. 

Try this instead:

(defun gnus-user-format-function-z (header)
  "Test dynamic color"
  (let ((date-time (safe-date-to-time (mail-header-date header))))
    (if (string= date-time (format-time-string "%m%d"))
        (propertize date-time 'face my-red-face) 
      (propertize date-time 'face my-blue-face))))

And define `my-red-face' and `my-blue-face'.

-- 
Bastien