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refactor(exit): pass error message to preserve_exit() (#22097)

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Problem:
1. Some calls to preserve_exit() don't put a message in IObuff, so the
   IObuff printed by preserve_exit() contains unrelated information.
2. If a TUI client runs out of memory or receives a deadly signal, the
   error message is shown on alternate screen and cannot be easily seen
   because the TUI exits alternate screen soon afterwards.

Solution:
Pass error message to preserve_exit() and exit alternate screen before
printing it.

Note that this doesn't fix the problem that server error messages cannot
be easily seen on exit. This is tracked in #21608 and #21843.
This commit is contained in:
zeertzjq
2023-02-04 20:14:31 +08:00
committed by GitHub
parent 90333b24c3
commit 69bb145cea
8 changed files with 21 additions and 30 deletions
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5
src/nvim/os/signal.c
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@@ -172,11 +172,10 @@ static void deadly_signal(int signum)
ILOG("got signal %d (%s)", signum, signal_name(signum));
snprintf(IObuff, sizeof(IObuff), "Vim: Caught deadly signal '%s'\r\n",
signal_name(signum));
snprintf(IObuff, IOSIZE, "Vim: Caught deadly signal '%s'\r\n", signal_name(signum));
// Preserve files and exit.
preserve_exit();
preserve_exit(IObuff);
}
static void on_signal(SignalWatcher *handle, int signum, void *data)