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Re: setting cygwin terminal (mintty) title from a very remote system

On Fri, Apr 11, 2014 at 12:13:07PM -0700, Ross Boylan wrote:
> I typically connect to systems through several hops; this note is about how
> I managed to set the title of the cygwin terminal to match the remote
> system.  Usually it just shows the name on the first hop only.   I would
> love to learn there is a better way to get the same results.
> Various internet sources advise things like
> echo -ne '\e]0;Title\a'
> to set the window title while noting that the default cygwin prompt sets
> this automatically.  This did not work for me initially, but I found a way
> to get it to work.
> On the remote system the prompt does not contain any window titling
> commands.
> Concretely, my connection sequence looks like this.
> From System A, running Windows 7, launch a cygwin bash shell.
> In that shell, ssh to system B.  B's name will appear in the title bar.
> From B ssh to C.  Neither this nor later operations change the title bar.
> From C ssh to D.
> On D, run screen.
> In screen, run emacs.
> In emacs start a (bash) shell.
> I want the name of system D to appear in my title bar.
> Systems B-D are running various versions of Debian GNU/Linux.
> The echo command from within the bash prompt is ineffective.
> If I start a new shell from within screen (Ctl-a c), the echo command works
> from there.
> I suppose if I built the window setting command into the remote prompt
> things would just work, since I launch emacs from such a prompt.  But I'm
> not sure what that would do if I were not connecting via cygwin.
> Ross Boylan
> Someone put in a request for a feature to support manually setting the
> title; this was rejected on the grounds that echoing an appropriate sequence
> would do the same thing
> ( Unfortunately, that
> does not seem to be true after connecting to a remote system, or at least it
> is not true after the sequence of steps described above.
> has a comment that the echo has no effect when issued from within screen.
It is simply inappropriate to try to set the window title from the bash prompt.
Remove any and all attempts to do that from PS1 and instead  put them in
PROMPT_COMMAND which bash will obey at every prompt. This may look like
overkill, but will reset the window name should any command you run have changed
it. E.g. I have

PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}:${PWD/#$HOME/~}\007"'

Try it,

Cheers ... Duncan.

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