Cygwin programs display output incorrectly when run under conemu

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Cygwin programs display output incorrectly when run under conemu

Paul Moore
This issue has also been reported to the ConEmu tracker as
https://github.com/Maximus5/ConEmu/issues/2059.

If I run a cygwin command (for example ls, or for a simpler example,
"printf hello\nthere", although the latter needs care to get the
correct level of \n escaping :-)) newlines are displayed by the text
moving down a line, but *not* returning to the left hand margin.

An example, running in Powershell as my shell:

>E:\Utils\Cygwin64\bin\printf.exe hello\nthere
hello
     there

This behaviour is present with the latest version of cygwin1.dll, as
well as with the 20200212 snapshot. It is not present if I replace the
Cygwin dll with version 3.0.7-1.

The problem does not appear with a standard cmd.exe terminal (standard
Windows console host) or the new Windows Terminal application. I
understand that ConEmu handles the console management differently
"behind the scenes" to present a GUI front end, but I don't know
enough about the internals to know how it does that.

I can work around the issue by pinning to cygwin 3.0.7-1, but it's
obviously not ideal. I have been unable to find any details as to what
changed between cygwin 3.0.7-1 and the next version to help me track
down the issue any more specifically.

There are some notes at https://conemu.github.io/en/CygwinMsys.html
that I've read, but to be honest I don't entirely understand. I did,
however, confirm that this issue doesn't occur in a standard `cmd`
window (and I added that information to the ConEmu issue report).

Any information that would help to pin down the cause of this problem
would be very much appreciated.

Paul

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Re: Cygwin programs display output incorrectly when run under conemu

Hartmut Bartels
I had the same issue and got answer from Takashi Yano
https://cygwin.com/ml/cygwin/2020-01/msg00003.html

My workareound  is
using version ConEmuPack.170807.7z. This works
together with cygwin 3.1.2-1. Versions of Comemu greater 170807 won't.

Same for cmder, if replacing conemu with version 170807.

Hartmut

Am 16.02.2020 um 13:22 schrieb Paul Moore:

> This issue has also been reported to the ConEmu tracker as
> https://github.com/Maximus5/ConEmu/issues/2059.
>
> If I run a cygwin command (for example ls, or for a simpler example,
> "printf hello\nthere", although the latter needs care to get the
> correct level of \n escaping :-)) newlines are displayed by the text
> moving down a line, but *not* returning to the left hand margin.
>
> An example, running in Powershell as my shell:
>
>> E:\Utils\Cygwin64\bin\printf.exe hello\nthere
> hello
>      there
>
> This behaviour is present with the latest version of cygwin1.dll, as
> well as with the 20200212 snapshot. It is not present if I replace the
> Cygwin dll with version 3.0.7-1.
>
> The problem does not appear with a standard cmd.exe terminal (standard
> Windows console host) or the new Windows Terminal application. I
> understand that ConEmu handles the console management differently
> "behind the scenes" to present a GUI front end, but I don't know
> enough about the internals to know how it does that.
>
> I can work around the issue by pinning to cygwin 3.0.7-1, but it's
> obviously not ideal. I have been unable to find any details as to what
> changed between cygwin 3.0.7-1 and the next version to help me track
> down the issue any more specifically.
>
> There are some notes at https://conemu.github.io/en/CygwinMsys.html
> that I've read, but to be honest I don't entirely understand. I did,
> however, confirm that this issue doesn't occur in a standard `cmd`
> window (and I added that information to the ConEmu issue report).
>
> Any information that would help to pin down the cause of this problem
> would be very much appreciated.
>
> Paul
>
> --
> Problem reports:       http://cygwin.com/problems.html
> FAQ:                   http://cygwin.com/faq/
> Documentation:         http://cygwin.com/docs.html
> Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
>

--
------------------------------
Dr.-Ing. Hartmut Bartels
[hidden email]
[hidden email]
------------------------------

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Re: Cygwin programs display output incorrectly when run under conemu

Paul Moore
Thank you. That explains the issue for me very well.

Paul

On Mon, 17 Feb 2020 at 01:07, Dr Hartmut Bartels
<[hidden email]> wrote:

>
> I had the same issue and got answer from Takashi Yano
> https://cygwin.com/ml/cygwin/2020-01/msg00003.html
>
> My workareound  is
> using version ConEmuPack.170807.7z. This works
> together with cygwin 3.1.2-1. Versions of Comemu greater 170807 won't.
>
> Same for cmder, if replacing conemu with version 170807.
>
> Hartmut
>
> Am 16.02.2020 um 13:22 schrieb Paul Moore:
> > This issue has also been reported to the ConEmu tracker as
> > https://github.com/Maximus5/ConEmu/issues/2059.
> >
> > If I run a cygwin command (for example ls, or for a simpler example,
> > "printf hello\nthere", although the latter needs care to get the
> > correct level of \n escaping :-)) newlines are displayed by the text
> > moving down a line, but *not* returning to the left hand margin.
> >
> > An example, running in Powershell as my shell:
> >
> >> E:\Utils\Cygwin64\bin\printf.exe hello\nthere
> > hello
> >      there
> >
> > This behaviour is present with the latest version of cygwin1.dll, as
> > well as with the 20200212 snapshot. It is not present if I replace the
> > Cygwin dll with version 3.0.7-1.
> >
> > The problem does not appear with a standard cmd.exe terminal (standard
> > Windows console host) or the new Windows Terminal application. I
> > understand that ConEmu handles the console management differently
> > "behind the scenes" to present a GUI front end, but I don't know
> > enough about the internals to know how it does that.
> >
> > I can work around the issue by pinning to cygwin 3.0.7-1, but it's
> > obviously not ideal. I have been unable to find any details as to what
> > changed between cygwin 3.0.7-1 and the next version to help me track
> > down the issue any more specifically.
> >
> > There are some notes at https://conemu.github.io/en/CygwinMsys.html
> > that I've read, but to be honest I don't entirely understand. I did,
> > however, confirm that this issue doesn't occur in a standard `cmd`
> > window (and I added that information to the ConEmu issue report).
> >
> > Any information that would help to pin down the cause of this problem
> > would be very much appreciated.
> >
> > Paul
> >
> > --
> > Problem reports:       http://cygwin.com/problems.html
> > FAQ:                   http://cygwin.com/faq/
> > Documentation:         http://cygwin.com/docs.html
> > Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> >
>
> --
> ------------------------------
> Dr.-Ing. Hartmut Bartels
> [hidden email]
> [hidden email]
> ------------------------------
>
> --
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