Issue with mintty: title not updated when background process exists

classic Classic list List threaded Threaded
6 messages Options
Reply | Threaded
Open this post in threaded view
|

Issue with mintty: title not updated when background process exists

Luc Henninger
Hello,

I have defined the PS1 variable as follow
PS1='\[\e]0;\w\a\]\[\e[32m\]\u@\h \[\e[35m\]\w\[\e[0m\]\n\$ '
so that the cur dir is set as title of the window.

This generally work for both mintty or cmd.
But after the sequence
   Luc@Mulan ~
   $ emacs &
   [1] 371
   Luc@Mulan ~
   $ cd bin
   Luc@Mulan ~/bin
   $
the title of the mintty widow remain to "~".

The same sequence with cmd window change the title to "~/bin"

The title is correctly updated only after I close emacs and push a
return to the main window.

Any explanation? Thanks
Regards

--
[hidden email]    +33 6 32 96 32 27


--
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus

--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple
Reply | Threaded
Open this post in threaded view
|

Re: Issue with mintty: title not updated when background process exists

Thomas Wolff
Am 01.04.2020 um 13:07 schrieb Luc Henninger:

> Hello,
>
> I have defined the PS1 variable as follow
> PS1='\[\e]0;\w\a\]\[\e[32m\]\u@\h \[\e[35m\]\w\[\e[0m\]\n\$ '
> so that the cur dir is set as title of the window.
>
> This generally work for both mintty or cmd.
> But after the sequence
>   Luc@Mulan ~
>   $ emacs &
>   [1] 371
>   Luc@Mulan ~
>   $ cd bin
>   Luc@Mulan ~/bin
>   $
> the title of the mintty widow remain to "~".
>
> The same sequence with cmd window change the title to "~/bin"
>
> The title is correctly updated only after I close emacs and push a
> return to the main window.
>
> Any explanation? Thanks
Noted first, this is in any case not a mintty issue as mintty updates
the title whenever it receives the respective escape sequence. The
scenario sounds weird, however. Is the background process continuously
sending title escape sequences? But 'emacs &' looks like you're starting
a GUI instance of emacs, right? So why should it?
Thomas
--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple
Reply | Threaded
Open this post in threaded view
|

Re: Issue with mintty: title not updated when background process exists

Thomas Wolff
Am 01.04.2020 um 14:20 schrieb Thomas Wolff:

> Am 01.04.2020 um 13:07 schrieb Luc Henninger:
>> Hello,
>>
>> I have defined the PS1 variable as follow
>> PS1='\[\e]0;\w\a\]\[\e[32m\]\u@\h \[\e[35m\]\w\[\e[0m\]\n\$ '
>> so that the cur dir is set as title of the window.
>>
>> This generally work for both mintty or cmd.
>> But after the sequence
>>   Luc@Mulan ~
>>   $ emacs &
>>   [1] 371
>>   Luc@Mulan ~
>>   $ cd bin
>>   Luc@Mulan ~/bin
>>   $
>> the title of the mintty widow remain to "~".
>>
>> The same sequence with cmd window change the title to "~/bin"
>>
>> The title is correctly updated only after I close emacs and push a
>> return to the main window.
>>
>> Any explanation? Thanks
> Noted first, this is in any case not a mintty issue as mintty updates
> the title whenever it receives the respective escape sequence. The
> scenario sounds weird, however. Is the background process continuously
> sending title escape sequences? But 'emacs &' looks like you're
> starting a GUI instance of emacs, right? So why should it?
Try to isolate the background instance from the terminal:
emacs > /dev/null 2>&1 &
--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple
Reply | Threaded
Open this post in threaded view
|

Re: Re: Issue with mintty: title not updated when background process exists

Luc Henninger
Le 01/04/2020 à 14:24, Thomas Wolff a écrit :

> Am 01.04.2020 um 14:20 schrieb Thomas Wolff:
>> Am 01.04.2020 um 13:07 schrieb Luc Henninger:
>>> Hello,
>>>
>>> I have defined the PS1 variable as follow
>>> PS1='\[\e]0;\w\a\]\[\e[32m\]\u@\h \[\e[35m\]\w\[\e[0m\]\n\$ '
>>> so that the cur dir is set as title of the window.
>>>
>>> This generally work for both mintty or cmd.
>>> But after the sequence
>>>   Luc@Mulan ~
>>>   $ emacs &
>>>   [1] 371
>>>   Luc@Mulan ~
>>>   $ cd bin
>>>   Luc@Mulan ~/bin
>>>   $
>>> the title of the mintty widow remain to "~".
>>>
>>> The same sequence with cmd window change the title to "~/bin"
>>>
>>> The title is correctly updated only after I close emacs and push a
>>> return to the main window.
>>>
>>> Any explanation? Thanks
>> Noted first, this is in any case not a mintty issue as mintty updates
>> the title whenever it receives the respective escape sequence. The
>> scenario sounds weird, however. Is the background process
>> continuously sending title escape sequences? But 'emacs &' looks like
>> you're starting a GUI instance of emacs, right? So why should it?
> Try to isolate the background instance from the terminal:
> emacs > /dev/null 2>&1 &
>
Yes, Thomas, I use emacs for MS Window. Thanks, this solves the issue.
This is so an issue for emacs for windows.

--
[hidden email]    +33 6 32 96 32 27


--
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus

--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple
Reply | Threaded
Open this post in threaded view
|

Re: Re: Issue with mintty: title not updated when background process exists

Luc Henninger
In reply to this post by Thomas Wolff
Le 01/04/2020 à 14:24, Thomas Wolff a écrit :

> Am 01.04.2020 um 14:20 schrieb Thomas Wolff:
>> Am 01.04.2020 um 13:07 schrieb Luc Henninger:
>>> Hello,
>>>
>>> I have defined the PS1 variable as follow
>>> PS1='\[\e]0;\w\a\]\[\e[32m\]\u@\h \[\e[35m\]\w\[\e[0m\]\n\$ '
>>> so that the cur dir is set as title of the window.
>>>
>>> This generally work for both mintty or cmd.
>>> But after the sequence
>>>   Luc@Mulan ~
>>>   $ emacs &
>>>   [1] 371
>>>   Luc@Mulan ~
>>>   $ cd bin
>>>   Luc@Mulan ~/bin
>>>   $
>>> the title of the mintty widow remain to "~".
>>>
>>> The same sequence with cmd window change the title to "~/bin"
>>>
>>> The title is correctly updated only after I close emacs and push a
>>> return to the main window.
>>>
>>> Any explanation? Thanks
>> Noted first, this is in any case not a mintty issue as mintty updates
>> the title whenever it receives the respective escape sequence. The
>> scenario sounds weird, however. Is the background process
>> continuously sending title escape sequences? But 'emacs &' looks like
>> you're starting a GUI instance of emacs, right? So why should it?
> Try to isolate the background instance from the terminal:
> emacs > /dev/null 2>&1 &
>
Even if your proposal solve the issue, I have a question of what's
append in the two different cases.

I use the same sequence (1/ cd ztry 2/ launch emacs ("emacs &" or "emacs
 > /dev/null 2>&1 &" 3/ cd .. 4/ exit emacs 5/ newline 6/ ^D) with
mintty configure for logs.

The log for the first case (mintty1459.log) is strongly longer that the
second one (mintty1470.log). It look like the wall window content is
rewritten each time a line is added.

I would appreciate if someone can give me some explanation. It look like
that I have the same kind of behavior with other program (i.e. scala
repl or sbt)

Thanks

--
[hidden email]    +33 6 32 96 32 27



--
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus

--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

mintty1459.log (1K) Download Attachment
mintty1470.log (508 bytes) Download Attachment
Reply | Threaded
Open this post in threaded view
|

Re: Issue with mintty: title not updated when background process exists

Thomas Wolff
Am 01.04.2020 um 22:21 schrieb Luc Henninger:

> Le 01/04/2020 à 14:24, Thomas Wolff a écrit :
>> Am 01.04.2020 um 14:20 schrieb Thomas Wolff:
>>> Am 01.04.2020 um 13:07 schrieb Luc Henninger:
>>>> Hello,
>>>>
>>>> I have defined the PS1 variable as follow
>>>> PS1='\[\e]0;\w\a\]\[\e[32m\]\u@\h \[\e[35m\]\w\[\e[0m\]\n\$ '
>>>> so that the cur dir is set as title of the window.
>>>>
>>>> This generally work for both mintty or cmd.
>>>> But after the sequence
>>>>   Luc@Mulan ~
>>>>   $ emacs &
>>>>   [1] 371
>>>>   Luc@Mulan ~
>>>>   $ cd bin
>>>>   Luc@Mulan ~/bin
>>>>   $
>>>> the title of the mintty widow remain to "~".
>>>>
>>>> The same sequence with cmd window change the title to "~/bin"
>>>>
>>>> The title is correctly updated only after I close emacs and push a
>>>> return to the main window.
>>>>
>>>> Any explanation? Thanks
>>> Noted first, this is in any case not a mintty issue as mintty
>>> updates the title whenever it receives the respective escape
>>> sequence. The scenario sounds weird, however. Is the background
>>> process continuously sending title escape sequences? But 'emacs &'
>>> looks like you're starting a GUI instance of emacs, right? So why
>>> should it?
>> Try to isolate the background instance from the terminal:
>> emacs > /dev/null 2>&1 &
>>
> Even if your proposal solve the issue, I have a question of what's
> append in the two different cases.
>
> I use the same sequence (1/ cd ztry 2/ launch emacs ("emacs &" or
> "emacs > /dev/null 2>&1 &" 3/ cd .. 4/ exit emacs 5/ newline 6/ ^D)
> with mintty configure for logs.
>
> The log for the first case (mintty1459.log) is strongly longer that
> the second one (mintty1470.log). It look like the wall window content
> is rewritten each time a line is added.
>
> I would appreciate if someone can give me some explanation. It look
> like that I have the same kind of behavior with other program (i.e.
> scala repl or sbt)
It seems to be the magic of the ConPTY handling (either on cygwin side
or on Windows side) to replay the title escape sequence after the
program has been sent to the background. Your log does not yet reveal
the whole story, though:
Is it repeatedly only initially (as seen two lines below "emacs &") or
more often as might be assumed by your symptom description?
--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple