C-k messes up display -- have to redraw-display

C-k messes up display -- have to redraw-display

[rob.dunne]

Hi emacs group,

I am have a problem on a new machine.
When I type C-k, the display is mucked up. The next line in the file is repeated 
multiple times. I have to use "M-x redraw-display" to fix it.

The problem happens in .Rnw, and .s file (but perhaps not all other files).

I can't find anything on the web about this problem.

My question is

1) how can I fix it, or
2) how can I get more information about the problem? There in nothing in the messages buffer
3) can you show me how to make C-k delete to the end of a line and then call
redraw-display? Not a neat thing to do, but better than what I am doing now


Ubuntu 14.04.4 LTS
GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-08 on lamiak, modified by Debian


Bye
R

Re: C-k messes up display -- have to redraw-display

[Kaushal Modi]

On Tue, Aug 2, 2016 at 1:00 AM <rob.dunne@gmail.com> wrote:

> Hi emacs group,
>
> I am have a problem on a new machine.
> When I type C-k, the display is mucked up. The next line in the file is
> repeated
> multiple times. I have to use "M-x redraw-display" to fix it.
>
> The problem happens in .Rnw, and .s file (but perhaps not all other files).


Can you recreate this issue in an emacs -Q session and report the steps one
can take to recreate that?

Ubuntu 14.04.4 LTS
> GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-08
> on lamiak, modified by Debian
>

It might also be of help to update to the latest stable version (24.5) or
the Release Candidate version ( 25.1-rc1
http://alpha.gnu.org/gnu/emacs/pretest/ ) of the soon to be released 25.1
version and see if you can recreate the issue on those versions.
-- 

Kaushal Modi

Re: C-k messes up display -- have to redraw-display

[Barry Margolin]

In article <9d56d493-eaf4-43ab-9fde-246be124f190@googlegroups.com>,
 rob.dunne@gmail.com wrote:

> Hi emacs group,
> 
> I am have a problem on a new machine.
> When I type C-k, the display is mucked up. The next line in the file is 
> repeated 
> multiple times. I have to use "M-x redraw-display" to fix it.
> 
> The problem happens in .Rnw, and .s file (but perhaps not all other files).
> 
> I can't find anything on the web about this problem.
> 
> My question is
> 
> 1) how can I fix it, or
> 2) how can I get more information about the problem? There in nothing in the 
> messages buffer
> 3) can you show me how to make C-k delete to the end of a line and then call
> redraw-display? Not a neat thing to do, but better than what I am doing now

Usually problems like this mean that the $TERM environment variable is 
incorrect, so it's not sending the proper control sequences for your 
terminal.

> 
> 
> Ubuntu 14.04.4 LTS
> GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-08 on 
> lamiak, modified by Debian
> 
> 
> Bye
> R

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***

Re: C-k messes up display -- have to redraw-display

[Bob Proulx]

rob.dunne@gmail.com wrote:
> When I type C-k, the display is mucked up. The next line in the file
> is repeated multiple times. I have to use "M-x redraw-display" to
> fix it.

I assume you are using a text terminal (rather than a graphics
display).  What type of terminal are you using?  What is $TERM in that
terminal?  Verifying the correct combination of TERM and terminal
should solve this problem.  If not then try using a different terminal
program from the many available.

Bob

Re: C-k messes up display -- have to redraw-display

[rob.dunne]

On Tuesday, August 2, 2016 at 2:55:43 PM UTC+10, rob....@gmail.com wrote:
> Hi emacs group,
> 
> I am have a problem on a new machine.
> When I type C-k, the display is mucked up. The next line in the file is repeated 
> multiple times. I have to use "M-x redraw-display" to fix it.
> 
> The problem happens in .Rnw, and .s file (but perhaps not all other files).
> 
> I can't find anything on the web about this problem.
> 
> My question is
> 
> 1) how can I fix it, or
> 2) how can I get more information about the problem? There in nothing in the messages buffer
> 3) can you show me how to make C-k delete to the end of a line and then call
> redraw-display? Not a neat thing to do, but better than what I am doing now
> 
> 
> Ubuntu 14.04.4 LTS
> GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-08 on lamiak, modified by Debian
> 
> 
> Bye
> R

some new information
1) it happens in a graphics display not a text window (sorry -- I thought it happened in both, so I did not specify it)
2) I installed emacs 25.1-rc1 -- the same thing happens i.e.
> pwd
/tmp/emacs-25.1
> emacs -Q  t.tex  #file with 1 letter per line -- a to h
a
b
c
d
e
f
g
h
#I put the cursor at a and press C-k -- it clears to the end of line
#I press C-k again to get rid of the blank line and the display then looks like
b
h
h
h
h
h
h

M-x redraw display fixes it
b
c
d
e
f
g
h

so far I have not found any other key combination that causes a problem

Bye
R

Re: C-k messes up display -- have to redraw-display

[rob.dunne]

On Tuesday, August 2, 2016 at 2:55:43 PM UTC+10, rob....@gmail.com wrote:
> Hi emacs group,
> 
> I am have a problem on a new machine.
> When I type C-k, the display is mucked up. The next line in the file is repeated 
> multiple times. I have to use "M-x redraw-display" to fix it.
> 
> The problem happens in .Rnw, and .s file (but perhaps not all other files).
> 
> I can't find anything on the web about this problem.
> 
> My question is
> 
> 1) how can I fix it, or
> 2) how can I get more information about the problem? There in nothing in the messages buffer
> 3) can you show me how to make C-k delete to the end of a line and then call
> redraw-display? Not a neat thing to do, but better than what I am doing now
> 
> 
> Ubuntu 14.04.4 LTS
> GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-08 on lamiak, modified by Debian
> 
> 
> Bye
> R

I spoke too soon.
Control-c-r  in ess mode (submit a command from a script buffer to an R process running in another buff) messes up the R buffer.

Re: C-k messes up display -- have to redraw-display

[Dale Snell]

On Wed, 3 Aug 2016 16:22:58 -0700 (PDT), in message
a1e71037-3c54-4084-9731-82f9947735f7@googlegroups.com,
rob.dunne@gmail.com wrote:

> some new information
> 1) it happens in a graphics display not a text window (sorry -- I
> thought it happened in both, so I did not specify it) 2) I installed
> emacs 25.1-rc1 -- the same thing happens i.e.
> > pwd
> /tmp/emacs-25.1
> > emacs -Q  t.tex  #file with 1 letter per line -- a to h
> a
> b
> c
> d
> e
> f
> g
> h
> #I put the cursor at a and press C-k -- it clears to the end of line
> #I press C-k again to get rid of the blank line and the display then
> looks like b
> h
> h
> h
> h
> h
> h
> 
> M-x redraw display fixes it
> b
> c
> d
> e
> f
> g
> h
> 


Hello Rob,

I have tried this in both 24.5.1 (the version that ships with
Fedora 23) and 25.1-rc1, which I downloaded and compiled
specifically for this test.  In neither case did your bug show up.
When I positioned the cursor over the "a" and hit C-k C-k, the
letter and then the blank line disappeared as expected.  The rest
of the characters remained as expected as well.

I am left to suspect that there is something amiss with your
setup.  I'm afraid I have no idea what that could be.

Sorry I couldn't be of more help.

--Dale

-- 
“Zathras is used to being beast of burden to other people's needs.
Very sad life.  Probably have very sad death, but at least there
is symmetry.”
    -- Zathras, _Babylon 5_, "War Without End, Part 1"

Re: C-k messes up display -- have to redraw-display

[Eli Zaretskii]

> Date: Wed, 3 Aug 2016 16:22:58 -0700 (PDT)
> From: rob.dunne@gmail.com
> Injection-Date: Wed, 03 Aug 2016 23:22:58 +0000
> 
> /tmp/emacs-25.1
> > emacs -Q  t.tex  #file with 1 letter per line -- a to h
> a
> b
> c
> d
> e
> f
> g
> h
> #I put the cursor at a and press C-k -- it clears to the end of line
> #I press C-k again to get rid of the blank line and the display then looks like
> b
> h
> h
> h
> h
> h
> h
> 
> M-x redraw display fixes it
> b
> c
> d
> e
> f
> g
> h

What you describe means that the software that actually draws to the
glass doesn't do what Emacs tells it to do.

Check the settings of your video hardware -- if there are some
"optimization" features there, turn them off, reboot, and try again.

If that doesn't help, check your versions and configuration of the X
related stuff (Xlib etc.) -- maybe you have some broken version.

Re: C-k messes up display -- have to redraw-display

[rob.dunne]

On Tuesday, August 2, 2016 at 2:55:43 PM UTC+10, rob....@gmail.com wrote:
> Hi emacs group,
> 
> I am have a problem on a new machine.
> When I type C-k, the display is mucked up. The next line in the file is repeated 
> multiple times. I have to use "M-x redraw-display" to fix it.
> 
> The problem happens in .Rnw, and .s file (but perhaps not all other files).
> 
> I can't find anything on the web about this problem.
> 
> My question is
> 
> 1) how can I fix it, or
> 2) how can I get more information about the problem? There in nothing in the messages buffer
> 3) can you show me how to make C-k delete to the end of a line and then call
> redraw-display? Not a neat thing to do, but better than what I am doing now
> 
> 
> Ubuntu 14.04.4 LTS
> GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-08 on lamiak, modified by Debian
> 
> 
> Bye
> R

I have upgraded to Ubuntu 16.04.1 LTS GNU Emacs 24.5.1.
The problem has disappeared 

Bye
R