02-04-2020
Quote:
Originally Posted by
Ralph
It still duplicates the question lines when the cursor is in the middle of the screen.
Not with my linux
lxterminal. But I admit it might benefit from some more tweaking.
Quote:
What do the lines printf "\e7\e[$LINES;120r\e8" and printf "\e7\e[1;${LINES}r\e8" accomplish? I suppose you set the value of LINES to the number of lines of the window - let's say 20. Then the first snippet would say "\e7\e[20;120r\e8" and the second printf "\e7\e[1;20\e8" and r means 'set top and bottom lines of window.'
man bash:
Quote:
Shell Variables
.
.
.
LINES Used by the select compound command to determine the column length for printing selection lists. Automatically set if the checkwinsize op”
tion is enabled or in an interactive shell upon receipt of a SIGWINCH.
The 120 is just an arbitrary value way beyond the lower screen boundary. The construct sets the scroll region from last line seen to somewhere way down...
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LEARN ABOUT SUSE
curs_scroll
curs_scroll(3CURSES) Curses Library Functions curs_scroll(3CURSES)
NAME
curs_scroll, scroll, scrl, wscrl - scroll a curses window
SYNOPSIS
cc [ flag ... ] file ... -lcurses [ library ... ]
#include <curses.h>
int scroll(WINDOW *win);
int scrl(int n);
int wscrl(WINDOW *win, int n);
DESCRIPTION
With the scroll() routine, the window is scrolled up one line. This involves moving the lines in the window data structure. As an optimiza-
tion, if the scrolling region of the window is the entire screen, the physical screen is scrolled at the same time.
With the scrl() and wscrl() routines, for positive n scroll the window up n lines (line i+n becomes i); otherwise scroll the window down n
lines. This involves moving the lines in the window character image structure. The current cursor position is not changed.
For these functions to work, scrolling must be enabled via scrollok().
RETURN VALUES
All routines return the integer ERR upon failure and an integer value other than ERR upon successful completion.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
SEE ALSO
curs_outopts(3CURSES), curses(3CURSES), attributes(5)
NOTES
The header <curses.h> automatically includes the headers <stdio.h> and <unctrl.h>.
Note that scrl() and scroll() may be macros.
SunOS 5.10 31 Dec 1996 curs_scroll(3CURSES)