Interaction with non-cygwin programs

[Takashi Yano]

On Mon, 26 Oct 2020 10:56:14 +0100
Federico Kircheis wrote:
> On 26/10/2020 09.58, Takashi Yano wrote:
> > On Mon, 26 Oct 2020 07:05:30 +0100
> > Federico Kircheis wrote:
> >> On 25/10/2020 11.12, Takashi Yano wrote:
> >>> On Sat, 24 Oct 2020 17:04:59 +0200
> >>> Federico Kircheis via Cygwin <cygwin@cygwin.com> wrote:
> >>>> I've lately updated Windows to the latest version, and cygwin too (I had
> >>>> something previous to 3.0).
> >>>>
> >>>> I've read that interaction with non-cygwin programs should be better
> >>>> because of the console-helper.
> >>>>
> >>>>
> >>>> But in my daily usage the integration is worse, programs like tmux or
> >>>> even less seems to have more issues than before.
> >>>>
> >>>>
> >>>> For example
> >>>>
> >>>>      /cygdrive/c/Program\ Files/TortoiseSVN/bin/svn log | less
> >>>>
> >>>> used to work correctly.
> >>>> Currently if I press arrow down or up less does not scroll up or down
> >>>> anymore and "ESC[" appears briefly at the top-left of the console.
> >>>>
> >>>> Of course i could install subversion inside cygwin, as
> >>>>
> >>>> svn log | less
> >>>>
> >>>> works without issues, but it's just an example.
> >>>> git, adb, and other programs trigger the same behavior.
> >>>>
> >>>>
> >>>> Also less is not the only program, tmux for example has similar issues.
> >>>>
> >>>> I believe the underlying issue is console-helper but I'm not sure how I
> >>>> could test it, as I did, for example, not find how I could disable it,
> >>>> or if the issue is already known.
> >>>>
> >>>> I'm able to reproduce the issue on a clean machine, so it should not be
> >>>> a configuration issue on my side.
> >>>
> >>> Could you please try cygwin latest snapshot?
> >>> https://cygwin.com/snapshots/
> >>>
> >>
> >> Thank you, tried and it seems to work.
> >>
> >> I could notice only one minor issue: when making changing the terminal
> >> size with "Win+arrow" with
> >>
> >> /cygdrive/c/Program\ Files/TortoiseSVN/bin/svn log | less
> >>
> >> less does not seem to acknowledge the new terminal size, while
> >>
> >> svn log | less
> >>
> >> does.
> >> If using the mouse and resizing the terminal by hand, both commands seem
> >> to behave the same.
> > 
> > Thanks for the report. However, I cannot reproduce that.
> > 
> > 1) What windows version are you using? (such as Win10 1909)
> > 2) What less version are you using? (which less, and cygcheck -c less)
> > 
> 
> Microsoft Windows Version 1909 (OS Build 18363.1171)
> 
> "which less" reports /usr/bin/less
> 
> "cygcheck -c less" gives me version 551-1
> 
> I just noticed that the behavior I described is not always reproducible.
> 
> Sometimes resizing with "Win+arrow" works correctly, other times it does 
> not.
> 
> I restarted every time the program
> 
> /cygdrive/c/Program\ Files/TortoiseSVN/bin/svn log | less
> 
> to test the behavior.
> 
> See attached video, the first time it worked correctly, the second, 
> without AFAIK any change, not.

Thank you for the information. I could reproduce the problem.
Moreover, I found the cause and fixed that.

I will submit a patch for this issue shortly.

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