Random redisplay problem

Random redisplay problem

[Juanma Barranquero]

I don't know what change has prompted it, but with today's CVS I've
started to get random redisplay problems (that's on a W2K machine).

The symptom seem to be leftover characters on the screen while moving
pagewise.

I'm sorry I cannot offer more info.


                                                           /L/e/k/t/u


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Re: Random redisplay problem

[Juanma Barranquero]

On Thu, 21 Feb 2002 10:07:58 +0100, I wrote:

> The symptom seem to be leftover characters on the screen while moving
> pagewise.
> 
> I'm sorry I cannot offer more info.

I can reproduce it with this minimal .emacs:

(global-font-lock-mode t)
(set-face-attribute 'font-lock-doc-face nil :italic t)

Then I load ielm.el, and I do an incremental search of "looking". Doing
several C-s in a row (to move back and forth between the two instances
of `looking-at' on ielm.el), I get a bogus character every time (when
Emacs is displaying the definition of `ielm-return') either on the
line where looking-at appears or the following one.

Changing the second line on my .emacs to set any attribute other than
:italic (even the also-deprecated :bold) seems to not trigger the problem.


                                                           /L/e/k/t/u


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Re: Random redisplay problem

[Andreas Schwab]

Juanma Barranquero <lektu@terra.es> writes:

|> On Thu, 21 Feb 2002 10:07:58 +0100, I wrote:
|> 
|> > The symptom seem to be leftover characters on the screen while moving
|> > pagewise.
|> > 
|> > I'm sorry I cannot offer more info.
|> 
|> I can reproduce it with this minimal .emacs:
|> 
|> (global-font-lock-mode t)
|> (set-face-attribute 'font-lock-doc-face nil :italic t)
|> 
|> Then I load ielm.el, and I do an incremental search of "looking". Doing
|> several C-s in a row (to move back and forth between the two instances
|> of `looking-at' on ielm.el), I get a bogus character every time (when
|> Emacs is displaying the definition of `ielm-return') either on the
|> line where looking-at appears or the following one.

I can reproduce that even with the default setting for font-lock-doc-face.
I'm also getting a highligted "g" (in the isearch face) overlayed over the
"o" in comint-prompt-regexp of ielm-get-old-input.  This is the same place
where the cursor used to be at the other occurrence of lookup.  It seems
like some redisplay bug related to the cursor (independent of
blink-cursor-mode).

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE GmbH, Deutschherrnstr. 15-19, D-90429 Nürnberg
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

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Re: Random redisplay problem

[Kim F. Storm]

Andreas Schwab <schwab@suse.de> writes:

> Juanma Barranquero <lektu@terra.es> writes:
> 
> |> On Thu, 21 Feb 2002 10:07:58 +0100, I wrote:
> |> 
> |> > The symptom seem to be leftover characters on the screen while moving
> |> > pagewise.
> |> > 
> |> > I'm sorry I cannot offer more info.
> |> 
> |> I can reproduce it with this minimal .emacs:
> |> 
> |> (global-font-lock-mode t)
> |> (set-face-attribute 'font-lock-doc-face nil :italic t)
> |> 

I don't see that problem with X, so it is probably isolated to w32
(there have been several w32 related changes in the last few days).

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


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Re: Random redisplay problem

[Andreas Schwab]

storm@cua.dk (Kim F. Storm) writes:

|> Andreas Schwab <schwab@suse.de> writes:
|> 
|> > Juanma Barranquero <lektu@terra.es> writes:
|> > 
|> > |> On Thu, 21 Feb 2002 10:07:58 +0100, I wrote:
|> > |> 
|> > |> > The symptom seem to be leftover characters on the screen while moving
|> > |> > pagewise.
|> > |> > 
|> > |> > I'm sorry I cannot offer more info.
|> > |> 
|> > |> I can reproduce it with this minimal .emacs:
|> > |> 
|> > |> (global-font-lock-mode t)
|> > |> (set-face-attribute 'font-lock-doc-face nil :italic t)
|> > |> 
|> 
|> I don't see that problem with X, so it is probably isolated to w32
|> (there have been several w32 related changes in the last few days).

I'm using Emacs with X, and I do see it.  But it's already a week and a
half old.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE GmbH, Deutschherrnstr. 15-19, D-90429 Nürnberg
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

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Re: Random redisplay problem

[Eli Zaretskii]

On Thu, 21 Feb 2002, Andreas Schwab wrote:

> |> I don't see that problem with X, so it is probably isolated to w32
> |> (there have been several w32 related changes in the last few days).
> 
> I'm using Emacs with X, and I do see it.  But it's already a week and a
> half old.

Can someone please see if the problem exists in "emacs -nw"?

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Re: Random redisplay problem

[Juanma Barranquero]

On Thu, 21 Feb 2002 13:04:30 +0200 (IST), Eli Zaretskii <eliz@is.elta.co.il> wrote:

> Can someone please see if the problem exists in "emacs -nw"?

I don't see it.


                                                           /L/e/k/t/u


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