Re: address@hidden: Overlay string not displayed on text with `display' property]

[Kim F. Storm]

Richard Stallman <address@hidden> writes:

> Would you please DTRT and ack?

I have tried to find a simple way to fix this (assuming it is a bug),
but it is non-trivial to fix.

OTOH, it may not be a bug at all -- if we accept that overlays at invisible
buffer positions (e.g. if replaced by a display string), are ignored.

I any case, I want to post-pone this to after the release.


>
> From: YAMAMOTO Mitsuharu <address@hidden>
> Subject: Overlay string not displayed on text with `display' property
> To: address@hidden
> Date: Mon, 29 May 2006 16:35:01 +0900 (JST)
>
> I'm not quite sure if this is a bug or not.  Please tell me if it is
> not.
>
> An overlay string is not displayed if it is on (before?) the text that
> has some `display' property.  For example,
>
>   1. emacs -Q -D
>   2. (setq overlay (make-overlay 1 1))
>   3. (overlay-put overlay 'before-string "aaa")
>      Then "aaa" is displayed at the beginning of buffer.
>   4. (put-text-property 1 2 'display "bbb")
>      Then "aaa" disappears.
>
>                                    YAMAMOTO Mitsuharu
>                               address@hidden
>
> If emacs crashed, and you have the emacs process in the gdb debugger,
> please include the output from the following gdb commands:
>     `bt full' and `xbacktrace'.
> If you would like to further debug the crash, please read the file
> /opt/local/src/emacs/etc/DEBUG for instructions.
>
>
> In GNU Emacs 22.0.50.1 (sparc-sun-solaris2.8, X toolkit, Xaw3d scroll bars)
>  of 2006-05-29 on church
> X server distributor `The XFree86 Project, Inc', version 11.0.40300000
> configured using `configure '--x-libraries=/usr/local/lib' 'CFLAGS=-g -O2 
> -mv8 -DSYNC_INPUT''
>
> Important settings:
>   value of $LC_ALL: nil
>   value of $LC_COLLATE: nil
>   value of $LC_CTYPE: nil
>   value of $LC_MESSAGES: nil
>   value of $LC_MONETARY: nil
>   value of $LC_NUMERIC: nil
>   value of $LC_TIME: nil
>   value of $LANG: ja
>   locale-coding-system: japanese-iso-8bit
>   default-enable-multibyte-characters: t
>
> Major mode: Lisp Interaction
>
> Minor modes in effect:
>   display-time-mode: t
>   tooltip-mode: t
>   tool-bar-mode: t
>   mouse-wheel-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   blink-cursor-mode: t
>   unify-8859-on-encoding-mode: t
>   utf-translate-cjk-mode: t
>   auto-compression-mode: t
>   line-number-mode: t
>
>
>
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> ----------
>

-- 
Kim F. Storm <address@hidden> http://www.cua.dk