"Jeremy Baxter" <[email protected]> wrote:
> Hi all, I'm trying to disable the horizontal line scrolling feature in ksh,
> enabled through `set -o vi' or `set -o emacs'. ksh(1) says this about it:
>
> In these editing modes, if a line is longer than the screen width (see
> the COLUMNS parameter), a `>', `+', or `<' character is displayed in
> the last column indicating that there are more characters after, before
> and after, or before the current position, respectively. The line is
> scrolled horizontally as necessary.
>
> Is it possible to completely disable this feature at the moment? Setting
> COLUMNS to a large number "disables" it for the most part but brings in
> other weird behaviours like massive gaps between lines when pressing
> ctrl-u and random newlines showing up when scrolling through history.
Hi, Jeremy,
The display() function in /usr/src/bin/ksh/vi.c goes something like
this:
static void
display(char *wb1, char *wb2, int leftside)
{
...
int moreright;
...
moreright = 0;
...
if (col < winwidth) {
...
} else
moreright++;
...
/* Update the "more character". */
if (es->winleft > 0 && moreright)
/* POSIX says to use * for this but that is a globbing
* character and may confuse people; + is more innocuous
*/
mc = '+';
else if (es->winleft > 0)
mc = '<';
else if (moreright)
mc = '>';
else
mc = ' ';
if (mc != morec) {
ed_mov_opt(pwidth + winwidth + 1, wb1);
x_putc(mc);
cur_col++;
morec = mc;
lastb = -1;
}
...
}
I assume, the logic is similar for the emacs mode. So, unless I missed
something, disabling both the vi and emacs modes is the only way to get
rid of the behaviour.
--
Alexander
