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tui: job-control: use saved termios for pty jobs

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On startup, if running in a terminal, save the termios properties.
Use the saved termios for `:terminal` and `jobstart()` pty jobs.

This won't affect nvim spawned outside of a terminal.

questions:

- This affects `:terminal` and `jobstart({'pty'✌️true})`.
  Should we be more conservative for `jobstart({'pty'✌️true})` (e.g.
  pass NULL to forkpty() and let the OS defaults prevail)?
  - Note: `iutf8` would not be set in that case.
This commit is contained in:
Justin M. Keyes 2017-07-10 01:58:54 +02:00 committed by Björn Linse
parent a97cdff14d
commit 9acd7bfe25
2 changed files with 28 additions and 4 deletions
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11
src/nvim/main.c
View File

@ -73,6 +73,9 @@
#include "nvim/api/private/helpers.h"
#include "nvim/api/private/handle.h"
#include "nvim/api/private/dispatch.h"
#ifndef WIN32
# include "nvim/os/pty_process_unix.h"
#endif
/* Maximum number of commands from + or -c arguments. */
#define MAX_ARG_CMDS 10
@ -1247,6 +1250,14 @@ static void check_and_set_isatty(mparm_T *paramp)
stdout_isatty
= paramp->output_isatty = os_isatty(fileno(stdout));
paramp->err_isatty = os_isatty(fileno(stderr));
int tty_fd = paramp->input_isatty
? OS_STDIN_FILENO
: (paramp->output_isatty
? OS_STDOUT_FILENO
: (paramp->err_isatty ? OS_STDERR_FILENO : -1));
#ifndef WIN32
pty_process_save_termios(tty_fd);
#endif
TIME_MSG("window checked");
}

21
src/nvim/os/pty_process_unix.c
View File

@ -36,13 +36,26 @@
# include "os/pty_process_unix.c.generated.h"
#endif
/// termios saved at startup (for TUI) or initialized by pty_process_spawn().
static struct termios termios_default;
/// Saves the termios properties associated with `tty_fd`.
///
/// @param tty_fd TTY file descriptor, or -1 if not in a terminal.
void pty_process_save_termios(int tty_fd)
{
if (tty_fd == -1 || tcgetattr(tty_fd, &termios_default) != 0) {
return;
}
}
/// @returns zero on success, or negative error code
int pty_process_spawn(PtyProcess *ptyproc)
FUNC_ATTR_NONNULL_ALL
{
static struct termios termios;
if (!termios.c_cflag) {
init_termios(&termios);
if (!termios_default.c_cflag) {
// TODO(jkeyes): We could pass NULL to forkpty() instead ...
init_termios(&termios_default);
}
int status = 0; // zero or negative error code (libuv convention)
@ -52,7 +65,7 @@ int pty_process_spawn(PtyProcess *ptyproc)
ptyproc->winsize = (struct winsize){ ptyproc->height, ptyproc->width, 0, 0 };
uv_disable_stdio_inheritance();
int master;
int pid = forkpty(&master, NULL, &termios, &ptyproc->winsize);
int pid = forkpty(&master, NULL, &termios_default, &ptyproc->winsize);
if (pid < 0) {
status = -errno;