> On 16 Oct 2024, at 16:26, Lennart Poettering <mzerq...@0pointer.de> wrote: > > ^G is BEL btw, i.e. you are redefining what happens if something > generates an event that shall ring the terminal bell, and turn it into > SIGINT. Which is really really weird.
As output the Ctrl-G will cause the BEL actions of the terminal. But as input it will depend on the app that is running. In the case of stty intr ^g that means the kernel TTY handling willecho ^g and turn the Ctrl-g into a SIGINT. > > I mean, there might be some bug lurking somewhere, but this definitely > *is* a really really weird thing to do. It's only run0 that has an issue with this. > > You didn't mention which terminal precisely your are doing this weird > config on though: before you invoke run0 (i.e on your terminal app's > pty) or while you are inside of run0 (i.e. on run0's pty). This > matters a lot and makes a major difference. As I said this is under Plasma KDE Konsole. > > note that when run0 operates it will temporarily turn off any handling > of keypresses on the terminal app's pty (let's call it the "outer" > one), by putting the pty into raw mode (via cfmakeraw()). This should > mean that ^G should be deliverd to run0 as ^G, which it then forwards > to the other pty (the "inner" one). Which won't handle it, because we > do not redefine keycodes on the inner one. So the app on the other end > (likely your shell?) will receive ^G. Most shells will respond to that > via echoing it back, which should generate a bell event. We never get that far as the run0 code exits with 130 as its exit code. Regardless typing Ctrl-g when the terminal is set to stty intr ^c just sees the Ctrl-G echo as ^g. I think I need to see what signal handling the process has setup. I cannot think of anything else that would cause the process to exit. While the ppoll() call is running. Barry
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