chjj/pty.js

Fork of bash does not trigger SIGINT for child processes

Opened this issue · 1 comments

jeremyramin commented

Explanation

When you fork bash and then run a command such as cat or python, both of which wait for user input, the child process can not be stopped with ctrl+c. The escape character \x03 is sent properly because you can see it as input in the terminal. However, the commands do not receive a SIGINT signal and therefore do not terminate. Multiple people who use my package on OS X and Linux report this as an issue. I too can confirm that it occurs on OS X.

Steps to Reproduce

  1. Fork an instance of bash
  2. Use term.js or something to run cat, python or a compiled C file in your bash instance
  3. Try using ctrl+c to exit

Possibly Useful Information

For some reason this does not affect zsh on my computer. So forking zsh instead of bash solves the issue but is not ideal. Additionally, if I fork zsh and then inside of zsh start a bash shell with bash or exec bash then bash works just fine.

I've tried exploring the C++ code for pty.js for a fix but I wasn't able to find one. Any help would be appreciated.

ktosiek commented

This seems to still be a problem.
@jeremyramin I see you have a workaround in your fork, will you be making a PR?