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Date: Fri, 12 Dec 2025 20:58:18 +0900
To: cygwin@cygwin.com
Subject: Re: dynamic conpty loading
Message-Id: <20251212205818.7bfeeaf4bfd3c8fb42521a40@nifty.ne.jp>
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From: Takashi Yano via Cygwin <cygwin@cygwin.com>
Reply-To: Takashi Yano <takashi.yano@nifty.ne.jp>
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On Fri, 12 Dec 2025 09:23:24 +0100
Thomas Wolff wrote:
> Am 11.12.2025 um 23:46 schrieb Takashi Yano via Cygwin:
> > On Thu, 11 Dec 2025 15:01:14 +0100
> > Thomas Wolff wrote:
> >> Hi Takashi,
> >>
> >> Am 11.12.2025 um 13:06 schrieb Takashi Yano via Cygwin:
> >>> Hi Thomas,
> >>>
> >>> Thanks for the reply.
> >>>
> >>> On Thu, 11 Dec 2025 10:45:52 +0100
> >>> Thomas Wolff wrote:
> >>>> Hi Takashi,
> >>>> sorry, I just saw this mail right now.
> >>>>
> >>>> Am 06.12.2025 um 22:40 schrieb Takashi Yano via Cygwin:
> >>>>> Hi Thomas,
> >>>>>
> >>>>> On Sat, 6 Dec 2025 18:48:29 +0100
> >>>>> Thomas Wolff wrote:
> >>>>>> Am 03.12.2025 um 13:49 schrieb Takashi Yano via Cygwin:
> >>>>>>> On Wed, 3 Dec 2025 11:34:01 +0000 (UTC)
> >>>>>>> matthew patton wrote:
> >>>>>>>> the libopenconsole.postinstall script ihas some glaring issues.
> >>>>>>>>
> >>>>>>>> * define strings once and then use the variable instead of repeating over and over and over the long-ass path names.
> >>>>>>>>
> >>>>>>>> * the wget to STDOUT strikes me as pointless. use curl if you're going to resort to that kind of operation. Otherwise just save the .zip to disk already without gratuitous memory buffering
> >>>>>>>>
> >>>>>>>> * /tmp should not be assumed. use $TMPDIR
> >>>>>>>>
> >>>>>>>> * use trap to clean up after yourself in both the successful and unsuccessful cases
> >>>>>>>>
> >>>>>>>> * 'POSTFIX' makes no sense. it's ARCH or PLATFORM
> >>>>>>>>
> >>>>>>>> * personally I would have versions.txt be a tab deliminted file with version_num\tsha256 of x64\tsha256 of x86 or something along those lines.
> >>>>>>> Thanks!
> >>>>>> Unfortunately, this does not work for me on Windows 10.
> >>>>>> And I cannot test on Windows 11; my previous report was bogus, I
> >>>>>> self-compiled the unpatched cygwin1.dll for a cross-test but it fails.
> >>>>>> Running bash from a Windows console, then Cygwin console works, also
> >>>>>> running wsl from there. Running `mintty -h alw` says
> >>>>>> The handle is invalid.
> >>>>>> Error code: Bash/Service/ERROR_INVALID_HANDLE
> >>>>> Thansk for testing.
> >>>>> Do you mean `mintty -h alw` works on self-compiled-unpatched
> >>>>> cygwin1.dll but does not work on self-compiled-patched cygwin1.dll?
> >>>> No, I mean in my Windows 11 system, it failed even with a self-compiled
> >>>> unpatched cygwin1.dll, right now.
> >>>> (I was having cygwin build problems before...)
> >>>> So I took a fresh approach, fresh git clone, then followed the
> >>>> cumbersome build instructions (which I had put into my own configure
> >>>> wrapper and used to work before).
> >>>> Not quite understanding the purpose of that package, or the postinstall
> >>>> script which told me
> >>>> cat: /etc/libopenconsole/version.txt: No such file or directory
> >>>> sha256sum:
> >>>> /etc/libopenconsole/Microsoft.WindowsTerminal__x64.zip.sha256: No such
> >>>> file or directory
> >>>> , I just copied OpenConsole.exe manually into /bin. And yes, now it
> >>>> works in Windows 11, even with OpenConsole from WT 1.23 (which is a bit
> >>>> surprising as there was a bug which they fixed later).
> >>>>
> >>>> Copied the solution to Windows 10 but unfortunately it does not work
> >>>> there. Kind regards Thomas
> >>> What happens in Windows 10 case? Does cygwin itself start and it
> >>> has a problem when starting non-cygwin app? Or does not start at all?
> >> No, wsl was running normally, just the fixes of terminal interworking
> >> (esp. character attributes, test file attached) did not work.
> >> ...
> >>
> >>> In my environment, patched cygwin1.dll works under both Win10 and 11.
> >> Well, yeah, I gave it a fresh go under Win10 as well and miraculously
> >> now it works!
> >> With OpenConsole from either 1.23, 1.24 pre-release, or 1.25 "canary".
> >> Thanks a lot for making this work.
> > Thanks for testing and the test file.
> > With mintty 3.8.1, the test script works with the following settings,
> > with/without wls in mintty window.
> >
> > Show bold: as font
> > Allow blinking: on
> > Show dif as fot: on
> >
> > Without OpenConsole.exe, "5: text blinking" and "6: text blinking rapidly"
> > are the same result and "CMYK colour" does not work while all attributes
> > work with OpenConsole.exe.
> Actually, with the original Windows conhost.exe in $WINDIR/System32 
> (size 867KB),
> all attributes in the test file except normal blinking are broken for 
> me; bold is the only one rendered but enforces white colour.
> The patch plus OpenConsole.exe fixes this, not only for wsl but also for 
> Windows console programs, test case
> cmd /C type xtextattr1
> 
> Another test case:
> wsl sh -c '/bin/echo -e "\e[c\e[>c"'
> 
> > Thanks!
> Thanks to you. Will the patch be available as a cygwin release or 
> prerelease soon?

After some more testing and review, the patch would be applied to
master branch. This mean that the cygwin 3.7.0-dev (TEST) will
be released shortly.

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>

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