[PATCH v2 0/1] Fix PTY state management in pseudo console support.

[Ken Brown]

On 9/1/2019 5:53 PM, Takashi Yano wrote:
> Hi Ken,
> 
> Thank you for testing.
> 
> On Sun, 1 Sep 2019 15:13:47 +0000
> Ken Brown wrote:
>> On 8/31/2019 6:54 PM, Takashi Yano wrote:
>>> Pseudo console support in test release TEST: Cygwin 3.1.0-0.3,
>>> introduced by commit 169d65a5774acc76ce3f3feeedcbae7405aa9b57,
>>> has some bugs which cause mismatch between state variables and
>>> real pseudo console state regarding console attaching and r/w
>>> pipe switching. This patch fixes this issue by redesigning the
>>> state management.
>>
>> After applying this patch, I get the following in mintty:
>>
>> $ cygcheck -cd | grep bash
>> grep: write error: Bad file descriptor
>>
>> Further commands after that lead to the cursor jumping around.
> 
> I have fixed this problem. I will post it as v3 patch soon.
> 
>> Here's a second glitch I've noticed (starting with commit
>> 169d65a5774acc76ce3f3feeedcbae7405aa9b57): In emacs, if I run a command that
>> uses compilation mode, the output displayed in the compilation buffer starts
>> with ^[[H^[[J.  Here ^[ is the escape character, so this is apparently the two
>> ANSI escape sequences ESC[H and ESC[J.
>>
>> Sample commands that use compilation mode are 'M-x compile', 'M-x rgrep', and
>> 'M-x find-name-directory'.  I can provide more detailed reproduction
>> instructions if you're not an emacs user.
> 
> Hmmm, it seems that ANSI escape sequences are not recognized in emacs.
> 
>> 'M-x find-name-directory'
> Do you mean find-name-dired ?

Yes.

Ken