Weird capitalisation in "<mode-name> enabled in current buffer"

[Joost Kremers <joostkremers@fastmail.fm>]

Hi list,

I "wrote" a teeny-tiny minor mode `dedicated-mode` inspired by the same-name
mode available on Melpa. It's basically just a single line:

```
(define-minor-mode dedicated-mode
  "Minor mode to dedicate a window to its buffer."
  :init-value nil :lighter " D" :global nil
  (set-window-dedicated-p nil dedicated-mode))
```

Now, never mind that this shouldn't be a minor mode at all, since it should be
linked to the window, not the buffer. What's strange is that when I activate
this mode, the message in the echo area reads:

DeDicateD moDe enabled in current buffer

Note the capital Ds in the words "DeDicateD moDe". Same thing happens when I
deactivate the mode.

Funny thing is, if I change the :lighter in the mode definition to lower case
"d", the capitalisation does not happen.

So, what should I file this under? Bug or joke? :D


-- 
Joost Kremers
Life has its moments