docker run: PS1 bash colors don't display properly

[mikefaille]

This is what I see when I try to have an interactive output.

http://pastebin.com/gtkHBb2n

(github markdown interpret these characters chains ...)

[Silex]

Hello,

Those are color escape code... can you explain exactly what you do to trigger this?

For example, if I select the unbutu:latest image and press R R bash RET I enter a bash prompt, and then type ls -alh --color it works fine...

That said, I agree that the current implementation is to simple. See #7 for what will probably happen in the future.

[mikefaille]

Ah, I use https://github.com/bbatsov/solarized-emacs as theme.

My ubuntu promt : http://pastebin.com/9DNGzUgR

[Silex]

I think I found the issue... Please try this:

(ansi-color-for-comint-mode-on)

Inside your .emacs file.

If that fixes it for you, I'll make a commit.

[mikefaille]

It dont work. I had (ansi-color-for-comint-mode-on) in my ~/.emacs.d/init.el Recompile this file. Restart emacs.

And, when I docker exec, it dont work :-/

I tried M-: command to exec (ansi-color-for-comint-mode-on) in same docker tty buffer too.

If you want a preview : http://postimg.org/image/wfqxnq10p/

Hum, if I tap after ls, ls output change for http://pastebin.com/8Ysfdb9B

instead of : http://pastebin.com/gtkHBb2n

[Silex]

Weird. What is your emacs version?

Can't you try the following steps and report:

• start emacs -Q from a terminal
• M-x package-initialize
• M-x docker-images
• Mark the ubuntu image using m
• Press R R bash RET
• Check if it works

Also, I see from your screenshot that sometimes it works sometimes not. Try typing "reset" and "clear" when that happens to see if it repairs it.

[mikefaille]

Crap, it work better.

]0;root@b4fea5b723d0: /root@b4fea5b723d0:/# 

]0;root@b4fea5b723d0: /root@b4fea5b723d0:/# ls
ls
bin   dev  home  lib64  mnt  proc  run   srv  tmp  var
boot  etc  lib   media  opt  root  sbin  sys  usr
]0;root@b4fea5b723d0: /root@b4fea5b723d0:/# 

]0;root@b4fea5b723d0: /root@b4fea5b723d0:/# ls
ls
bin   dev  home  lib64  mnt  proc  run   srv  tmp  var
boot  etc  lib   media  opt  root  sbin  sys  usr
]0;root@b4fea5b723d0: /root@b4fea5b723d0:/# ps aux
ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.2  0.0  18172  3328 ?        Ss   18:46   0:00 bash
root        17  0.0  0.0  15572  2164 ?        R+   18:46   0:00 ps aux
]0;root@b4fea5b723d0: /root@b4fea5b723d0:/# 

[Silex]

Hum, what is your PROMPT? is your shell bash?

[mikefaille]

Yes, this is the default bash from ubuntu:latest

[Silex]

Weird. What is your emacs version?

Can you answer this? :)

[mikefaille]

Heh^ Compiled from master : GNU Emacs 25.0.50.4 (x86_64-unknown-linux-gnu, GTK+ Version 3.16.2) of 2015-05-03

[Silex]

Haha! I was able to reproduce the weirdness!

Basically, only ubuntu:latest misbehave... fedora:latest or debian:jessie behave fine

I'll investiguate, but it looks like a PS1 issue.

[mikefaille]

Allright ! Did you check centos:7 too ? That was my 1st test.

[Silex]

Yep, same problem.

[Silex]

Okay... the problem is pretty funny and I'm not sure how to solve it "the right way".

Basically, PS1 is set like if the terminal had full color support. This is logical because docker run emulates a terminal... and then it is displayed inside emacs which doens't have full color support.

The simplest fix right now is to type the following inside the bash session:

export PS1="${debian_chroot:+($debian_chroot)}\u@\h:\w\$ "

[Silex]

Other workaround:

export TERM=dumb; bash

Or from withing docker-run:

R R sh -c "export TERM=dumb bash" RET

[Silex]

Ok, simply use the following when running images:

R =e TERM=dumb RET R

[mikefaille]

I'll test it. Thank you !