[BUG] Customizing org-emphasis-alist does not work as expected [9.6.15 (release_9.6.15 @ d:/emacs_home/program/emacs/share/emacs/29.2/lisp/org/)]

[Chang Xiaoduan <drcxd@sina.com>]

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Hello,

I am trying to customizing `org-emphasis-alist` so that ` can replace ~ as
the code marker. I use the following code in my configuration file:

``` emacs-lisp
(setq org-emphasis-alist
      '(("*" bold)
        ("/" italic)
        ("_" underline)
        ("=" org-verbatim verbatim)
        ("`" org-code verbatim)
        ("+" (:strike-through t))))
```

After I restart Emacs, things does not work as I expected. Text
surrounded by ` is not rendered using the faces for code, and text
surrounded by ~ is rendered using a different face for code (different
from the faces before the customizing is applied). Also, I have set
`org-hide-emphasis-marker` to `t`, and ~ gets hidden but ` not.

This can be reproduced by launching Emacs using `emacs -Q`. Then
evaluate the code above in the *scratch* buffer. Then open an org-mode
buffer which contains text like "`code`" and "~code~". You can tell the
difference by launching Emacs using `emacs -Q` but does not evaluate the
above code.

Thank you

Emacs  : GNU Emacs 29.2 (build 2, x86_64-w64-mingw32)
 of 2024-02-02
Package: Org mode version 9.6.15 (release_9.6.15 @ d:/emacs_home/program/emacs/share/emacs/29.2/lisp/org/)