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FreeBSD's console wraps lines at $COLUMNS - 1 rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1) and does not appear to support changing this behaviour, or any of the obvious possibilities (turning off right margin wrapping, insert mode). This is irritating, most notably because it impossible to write to the very bottom-right of the screen without scrolling. To work around this, if built on FreeBSD and run with a "cons" $TERM, the bottom-right cell on the screen is omitted.

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This commit is contained in:
Nicholas Marriott 2009-02-11 23:16:45 +00:00
parent 4ddac7f0b3
commit 959eeef505
5 changed files with 51 additions and 7 deletions
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9
CHANGES
View File

@ -1,5 +1,12 @@
11 February 2009
* FreeBSD's console wraps lines at $COLUMNS - 1 rather than $COLUMNS (the
cursor can never be beyond $COLUMNS - 1) and does not appear to support
changing this behaviour, or any of the obvious possibilities (turning off
right margin wrapping, insert mode). This is irritating, most notably because
it impossible to write to the very bottom-right of the screen without
scrolling. To work around this, if built on FreeBSD and run with a "cons"
$TERM, the bottom-right cell on the screen is omitted.
* Emulate scroll regions (slowly) to support the few terminals which don't have
it (some of which don't really have any excuse).
@ -1095,7 +1102,7 @@
(including mutt, emacs). No status bar yet and no key remapping or other
customisation.
$Id: CHANGES,v 1.251 2009-02-11 19:06:56 nicm Exp $
$Id: CHANGES,v 1.252 2009-02-11 23:16:41 nicm Exp $
LocalWords: showw utf UTF fulvio ciriaco joshe OSC APC gettime abc DEF OA clr
LocalWords: rivo nurges lscm Erdely eol smysession mysession ek dstname RB ms

7
screen-redraw.c
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@ -1,4 +1,4 @@
/* $Id: screen-redraw.c,v 1.23 2009-02-11 17:50:33 nicm Exp $ */
/* $Id: screen-redraw.c,v 1.24 2009-02-11 23:16:41 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -134,6 +134,11 @@ screen_redraw_line(struct client *c, struct screen *s, u_int oy, u_int py)
sx = screen_size_x(s);
if (sx > c->tty.sx)
sx = c->tty.sx;
if (c->tty.term->flags & TERM_EARLYWRAP) {
/* Work around weirdness by omitting bottom right character. */
if (oy + py == c->tty.sy - 1 && sx == c->tty.sx)
sx--;
}
for (i = 0; i < sx; i++) {
gc = grid_view_peek_cell(s->grid, i, py);
tty_cursor(&c->tty, i, py, oy);

3
tmux.h
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@ -1,4 +1,4 @@
/* $Id: tmux.h,v 1.269 2009-02-11 18:44:05 nicm Exp $ */
/* $Id: tmux.h,v 1.270 2009-02-11 23:16:42 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -702,6 +702,7 @@ struct tty_term {
#define TERM_HASDEFAULTS 0x1
#define TERM_256COLOURS 0x2
#define TERM_EARLYWRAP 0x4
int flags;
SLIST_ENTRY(tty_term) entry;

22
tty-term.c
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@ -1,4 +1,4 @@
/* $Id: tty-term.c,v 1.12 2009-02-11 19:06:58 nicm Exp $ */
/* $Id: tty-term.c,v 1.13 2009-02-11 23:16:44 nicm Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@ -148,6 +148,26 @@ tty_term_quirks(struct tty_term *term)
term->codes[TTYC_ICH1].value.string = xstrdup("\033[@");
}
}
#ifdef __FreeBSD__
if (strncmp(term->name, "cons", 4) == 0) {
/*
* FreeBSD's console wraps lines at $COLUMNS - 1 rather than
* $COLUMNS (the cursor can never be beyond $COLUMNS - 1) and
* does not appear to support changing this behaviour, or any
* of the obvious possibilities (turning off right margin
* wrapping, insert mode).
*
* This is irritating, most notably because it is impossible to
* write to the very bottom-right of the screen without
* scrolling.
*
* Flag the terminal here and apply some workarounds in other
* places to do the best possible.
*/
term->flags |= TERM_EARLYWRAP;
}
#endif
}
struct tty_term *

17
tty.c
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@ -1,4 +1,4 @@
/* $Id: tty.c,v 1.70 2009-02-11 19:06:58 nicm Exp $ */
/* $Id: tty.c,v 1.71 2009-02-11 23:16:45 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -309,12 +309,23 @@ tty_puts(struct tty *tty, const char *s)
void
tty_putc(struct tty *tty, char ch)
{
u_int sx;
if (tty->cell.attr & GRID_ATTR_CHARSET)
ch = tty_get_acs(tty, ch);
buffer_write8(tty->out, ch);
if (ch >= 0x20)
tty->cx++; /* This is right most of the time. */
if (ch >= 0x20) {
sx = tty->sx;
if (tty->term->flags & TERM_EARLYWRAP)
sx--;
if (tty->cx == sx) {
tty->cx = 0;
tty->cy++;
} else
tty->cx++;
}
if (tty->log_fd != -1)
write(tty->log_fd, &ch, 1);