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patch 8.0.0932: terminal may not use right characters for BS and Enter

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Problem:    Terminal may not use right characters for BS and Enter.
Solution:   Get the characters from the tty.
This commit is contained in:
Bram Moolenaar 2017-08-13 20:06:18 +02:00
parent 69905d108b
commit 4f44b88684
4 changed files with 109 additions and 55 deletions
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84
src/os_unix.c
View File

@ -365,6 +365,11 @@ mch_chdir(char *path)
# endif
}
/* Why is NeXT excluded here (and not in os_unixx.h)? */
#if defined(ECHOE) && defined(ICANON) && (defined(HAVE_TERMIO_H) || defined(HAVE_TERMIOS_H)) && !defined(__NeXT__)
# define NEW_TTY_SYSTEM
#endif
/*
* Write s[len] to the screen.
*/
@ -3385,11 +3390,7 @@ mch_settmode(int tmode)
{
static int first = TRUE;
/* Why is NeXT excluded here (and not in os_unixx.h)? */
#if defined(ECHOE) && defined(ICANON) && (defined(HAVE_TERMIO_H) || defined(HAVE_TERMIOS_H)) && !defined(__NeXT__)
/*
* for "new" tty systems
*/
#ifdef NEW_TTY_SYSTEM
# ifdef HAVE_TERMIOS_H
static struct termios told;
struct termios tnew;
@ -3451,7 +3452,6 @@ mch_settmode(int tmode)
# endif
#else
/*
* for "old" tty systems
*/
@ -3492,48 +3492,72 @@ mch_settmode(int tmode)
void
get_stty(void)
{
char_u buf[2];
char_u *p;
ttyinfo_T info;
char_u buf[2];
char_u *p;
/* Why is NeXT excluded here (and not in os_unixx.h)? */
#if defined(ECHOE) && defined(ICANON) && (defined(HAVE_TERMIO_H) || defined(HAVE_TERMIOS_H)) && !defined(__NeXT__)
/* for "new" tty systems */
if (get_tty_info(read_cmd_fd, &info) == OK)
{
intr_char = info.interrupt;
buf[0] = info.backspace;
buf[1] = NUL;
add_termcode((char_u *)"kb", buf, FALSE);
/* If <BS> and <DEL> are now the same, redefine <DEL>. */
p = find_termcode((char_u *)"kD");
if (p != NULL && p[0] == buf[0] && p[1] == buf[1])
do_fixdel(NULL);
}
}
/*
* Obtain the characters that Backspace and Enter produce on "fd".
* Returns OK or FAIL.
*/
int
get_tty_info(int fd, ttyinfo_T *info)
{
#ifdef NEW_TTY_SYSTEM
# ifdef HAVE_TERMIOS_H
struct termios keys;
# else
struct termio keys;
# endif
if (
# if defined(HAVE_TERMIOS_H)
if (tcgetattr(read_cmd_fd, &keys) != -1)
tcgetattr(fd, &keys) != -1
# else
if (ioctl(read_cmd_fd, TCGETA, &keys) != -1)
ioctl(fd, TCGETA, &keys) != -1
# endif
)
{
buf[0] = keys.c_cc[VERASE];
intr_char = keys.c_cc[VINTR];
info->backspace = keys.c_cc[VERASE];
info->interrupt = keys.c_cc[VINTR];
if (keys.c_iflag & ICRNL)
info->enter = NL;
else
info->enter = CAR;
if (keys.c_oflag & ONLCR)
info->nl_does_cr = TRUE;
else
info->nl_does_cr = FALSE;
return OK;
}
#else
/* for "old" tty systems */
struct sgttyb keys;
if (ioctl(read_cmd_fd, TIOCGETP, &keys) != -1)
if (ioctl(fd, TIOCGETP, &keys) != -1)
{
buf[0] = keys.sg_erase;
intr_char = keys.sg_kill;
#endif
buf[1] = NUL;
add_termcode((char_u *)"kb", buf, FALSE);
/*
* If <BS> and <DEL> are now the same, redefine <DEL>.
*/
p = find_termcode((char_u *)"kD");
if (p != NULL && p[0] == buf[0] && p[1] == buf[1])
do_fixdel(NULL);
info->backspace = keys.sg_erase;
info->interrupt = keys.sg_kill;
info->enter = CAR;
info->nl_does_cr = TRUE;
return OK;
}
#if 0
} /* to keep cindent happy */
#endif
return FAIL;
}
#endif /* VMS */

1
src/proto/os_unix.pro
View File

@ -50,6 +50,7 @@ void mch_free_mem(void);
void mch_exit(int r);
void mch_settmode(int tmode);
void get_stty(void);
int get_tty_info(int fd, ttyinfo_T *info);
void mch_setmouse(int on);
void check_mouse_termcode(void);
int mch_screenmode(char_u *arg);

77
src/terminal.c
View File

@ -38,11 +38,6 @@
* in tl_scrollback are no longer used.
*
* TODO:
* - To set BS correctly, check get_stty(); Pass the fd of the pty.
* For the GUI fill termios with default values, perhaps like pangoterm:
* http://bazaar.launchpad.net/~leonerd/pangoterm/trunk/view/head:/main.c#L134
* Also get the NL behavior from there.
* - do not store terminal window in viminfo. Or prefix term:// ?
* - add a character in :ls output
* - add 't' to mode()
* - use win_del_lines() to make scroll-up efficient.
@ -52,8 +47,7 @@
* - add test for giving error for invalid 'termsize' value.
* - support minimal size when 'termsize' is "rows*cols".
* - support minimal size when 'termsize' is empty?
* - implement "term" for job_start(): more job options when starting a
* terminal. Allow:
* - implement job options when starting a terminal. Allow:
* "in_io", "in_top", "in_bot", "in_name", "in_buf"
"out_io", "out_name", "out_buf", "out_modifiable", "out_msg"
"err_io", "err_name", "err_buf", "err_modifiable", "err_msg"
@ -61,6 +55,8 @@
* Test: "cat" reading from a file or buffer
* "ls" writing stdout to a file or buffer
* shell writing stderr to a file or buffer
* - For the GUI fill termios with default values, perhaps like pangoterm:
* http://bazaar.launchpad.net/~leonerd/pangoterm/trunk/view/head:/main.c#L134
* - support ":term NONE" to open a terminal with a pty but not running a job
* in it. The pty can be passed to gdb to run the executable in.
* - if the job in the terminal does not support the mouse, we can use the
@ -168,6 +164,13 @@ static int term_and_job_init(term_T *term, int rows, int cols,
static void term_report_winsize(term_T *term, int rows, int cols);
static void term_free_vterm(term_T *term);
/* The characters that we know (or assume) that the terminal expects for the
* backspace and enter keys. */
static int term_backspace_char = BS;
static int term_enter_char = CAR;
static int term_nl_does_cr = FALSE;
/**************************************
* 1. Generic code for all systems.
*/
@ -552,23 +555,26 @@ term_write_job_output(term_T *term, char_u *msg, size_t len)
size_t done;
size_t len_now;
for (done = 0; done < len; done += len_now)
{
for (p = msg + done; p < msg + len; )
if (term_nl_does_cr)
vterm_input_write(vterm, (char *)msg, len);
else
/* need to convert NL to CR-NL */
for (done = 0; done < len; done += len_now)
{
if (*p == NL)
break;
p += utf_ptr2len_len(p, (int)(len - (p - msg)));
for (p = msg + done; p < msg + len; )
{
if (*p == NL)
break;
p += utf_ptr2len_len(p, (int)(len - (p - msg)));
}
len_now = p - msg - done;
vterm_input_write(vterm, (char *)msg + done, len_now);
if (p < msg + len && *p == NL)
{
vterm_input_write(vterm, "\r\n", 2);
++len_now;
}
}
len_now = p - msg - done;
vterm_input_write(vterm, (char *)msg + done, len_now);
if (p < msg + len && *p == NL)
{
/* Convert NL to CR-NL, that appears to work best. */
vterm_input_write(vterm, "\r\n", 2);
++len_now;
}
}
/* this invokes the damage callbacks */
vterm_screen_flush_damage(vterm_obtain_screen(vterm));
@ -654,10 +660,12 @@ term_convert_key(term_T *term, int c, char *buf)
switch (c)
{
case CAR: key = VTERM_KEY_ENTER; break;
case CAR: c = term_enter_char; break;
/* don't use VTERM_KEY_BACKSPACE, it always
* becomes 0x7f DEL */
case K_BS: c = term_backspace_char; break;
case ESC: key = VTERM_KEY_ESCAPE; break;
/* VTERM_KEY_BACKSPACE becomes 0x7f DEL */
case K_BS: c = BS; break;
case K_DEL: key = VTERM_KEY_DEL; break;
case K_DOWN: key = VTERM_KEY_DOWN; break;
case K_S_DOWN: mod = VTERM_MOD_SHIFT;
@ -1321,6 +1329,25 @@ terminal_loop(void)
position_cursor(curwin, &curbuf->b_term->tl_cursor_pos);
may_set_cursor_props(curbuf->b_term);
#ifdef UNIX
{
int fd = curbuf->b_term->tl_job->jv_channel->ch_part[PART_IN].ch_fd;
if (isatty(fd))
{
ttyinfo_T info;
/* Get the current backspace and enter characters of the pty. */
if (get_tty_info(fd, &info) == OK)
{
term_backspace_char = info.backspace;
term_enter_char = info.enter;
term_nl_does_cr = info.nl_does_cr;
}
}
}
#endif
for (;;)
{
/* TODO: skip screen update when handling a sequence of keys. */

2
src/version.c
View File

@ -769,6 +769,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
932,
/**/
931,
/**/