ctrl-c did not always terminate the vagrant running process

[hoatle]

and it causes errors, especially on Windows - Cygwin, for example, running some vagrant commands did not work). We need to investigate the root cause.

related:

• ctrl-c during import causes zombie VirtualBox processes hashicorp/vagrant#3
• powershell host is broken after Ctrl+C in vagrant powershell hashicorp/vagrant#8903
• https://stackoverflow.com/questions/32363425/vagrant-on-windows-any-way-to-stop-provisioning-with-ctrl-c
• ctrl+c did not terminate the gatling-rsync-auto on Cygwin #411

[hieptranquoc]

Root cause: Mintty was failed when running as background process! It will ignore SIGNALS( SIGINT, SIGKILL, SIGTERM ). I still have no way to solve this problem! I need to discuss to resolve the problem.

[hieptranquoc]

The problem is that the mintty is not fully compatible with the window.
Related:
https://mintty.github.io/mintty.1.html#LIMITATIONS
mintty/mintty#56
https://github.com/mintty/mintty/wiki/Tips#inputoutput-interaction-with-alien-programs

Should use winpty in mintty, it will resolve this problem!
Install winpty ( https://github.com/rprichard/winpty )
Or
can be fix by follow step:

1. install ruby for cygwin ( by cygwin packages installer )
   2 install ruby for window
   3 add ruby Path
   4 add cygwin/bin, sbin, usr/local/bin, usr/sbin, usr/bin to PATH
   5 And the most important thing is: Install git (https://git-scm.com/), and use git-bash instead of cygwin-terminal ( mintty will be integrated in git-bash )

****** TESTED *******
It will work!
Done!

[hoatle]

so we need to use git-bash instead of cygwin
related: #563

[hoatle]

assigned to @phuonglm to check and confirm on this.

If this bug only happens on Cygwin, not Git-Bash, then Git-Bash is preferred to use and we'll deprecate Cygwin when Git-Bash is proven to be stable and better than Cygwin.

[hoatle]

@hieptranquoc said that it looked like the problem is fixed on the recent latest version of cygwin, need @phuonglm to verify on this. If so, we don't need to use the wrapper anymore.

[phuonglm]

@hieptranquoc, I clean install windows 7 x64 cygwin and vagrant 2.2.4, virtualbox 6.0.8 but still got the problem with ctrl+c, could you specify more details about your version

[hieptranquoc]

@hieptranquoc, I clean install windows 7 x64 cygwin and vagrant 2.2.4, virtualbox 6.0.8 but still got the problem with ctrl+c, could you specify more details about your version

I ran with window 10 - x64. If windows 7 and windows 8 can not use mintty, you need to confirm that and the solution is switch to another tty!

[hoatle]

assign to @hoavt to verify the current (workaround) solution.

[hoatle]

assigned to @phuonglm to verify and confirm.

[phuonglm]

Verified on windows 7 and windows 10 x64 when used winpty as alias and everything work as expected.

[hoatle]

closed, thank you.