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Shell: Handle SIGWINCH to get a nice behavior when resizing.

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When resizing the terminal, we now clear the entire current line and reset
the shell's LineEditor input state. This makes it look and feel kinda the
same as xterm.

Fixes #286.
This commit is contained in:
Andreas Kling
2019-07-08 19:04:13 +02:00
parent 2c81477f16
commit fc4022d173
3 changed files with 18 additions and 27 deletions
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36
Shell/main.cpp
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@@ -50,11 +50,6 @@ void did_receive_signal(int signum)
g_got_signal = true;
}
void handle_sigint(int)
{
g.was_interrupted = true;
}
static int sh_exit(int, char**)
{
printf("Good-bye!\n");
@@ -561,11 +556,6 @@ void save_history()
}
}
void handle_sighup(int)
{
save_history();
}
int main(int argc, char** argv)
{
g.uid = getuid();
@@ -573,23 +563,17 @@ int main(int argc, char** argv)
tcsetpgrp(0, getpgrp());
tcgetattr(0, &g.termios);
{
struct sigaction sa;
sa.sa_handler = handle_sigint;
sa.sa_flags = 0;
sa.sa_mask = 0;
int rc = sigaction(SIGINT, &sa, nullptr);
assert(rc == 0);
}
signal(SIGINT, [](int) {
g.was_interrupted = true;
});
{
struct sigaction sa;
sa.sa_handler = handle_sighup;
sa.sa_flags = 0;
sa.sa_mask = 0;
int rc = sigaction(SIGHUP, &sa, nullptr);
assert(rc == 0);
}
signal(SIGHUP, [](int) {
save_history();
});
signal(SIGWINCH, [](int) {
g.was_resized = true;
});
int rc = gethostname(g.hostname, sizeof(g.hostname));
if (rc < 0)