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Re: Character FOO

From: Kenichi Handa
Subject: Re: Character FOO
Date: Wed, 25 Jan 2012 09:48:09 +0900

In article <address@hidden>, Eli Zaretskii <address@hidden> writes:

> In "emacs -Q" try this:
>   M-: (put-text-property 149 154 'display "FOO") RET

> Then move point to buffer position 149 (under F from "FOO"), and type
> "C-u C-x =".  The popped up buffer shows in its first line that the
> character at point is "FOO" (while the echo area says it's `e').

> Bug? feature?

It's a feature, but it has a bad effect in the above case.

C-u C-x = (describe-char) tries to display the character at position in
*Help* buffer as the same way as in the original buffer by
adding the same text properties.

      (setq item-list
               ,(format "%s (%d, #o%o, #x%x)"
                        (apply 'propertize char-description
                               (text-properties-at pos))
                        char char char))

Changing that part to something like this:

      (setq item-list
               ,(format "%s (displayed as %s) (%d, #o%o, #x%x)"
                        (apply 'propertize char-description
                               (text-properties-at pos))
                        char char char))

may be an improvement.

Kenichi Handa

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