02-05-2020
Quote:
Originally Posted by
Ralph
It's still the same as what I posted earlier. A bit longer than it has to be because of all the ifs and comments. I like the way you used parameter expansion in your version, but your version didn't scroll right on my system
Well, I don't think parameter expansion does affect scrolling of the screen.
Quote:
.
.
.
Only complaint now is that when the question is asked at the very bottom of the window the cursor still jumps to the next line, the window scrolls but the cursor jumps back to the end of the question. That can be avoided by using read -n 1 - as wisecracker suggested - but I like to use the Enter key to confirm.
Does it run the same way on your system?
No, it doesn't. In my terminal emulator, it asks and stays on the very last line, even when reading / getting the <Return> /<Enter> key. But, as we learned, emulators may behave differently.
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LEARN ABOUT SUNOS
curs_deleteln
curs_deleteln(3CURSES) Curses Library Functions curs_deleteln(3CURSES)
NAME
curs_deleteln, deleteln, wdeleteln, insdelln, winsdelln, insertln, winsertln - delete and insert lines in a curses window
SYNOPSIS
cc [ flag ... ] file ... -lcurses [ library ... ]
#include <curses.h>
int deleteln(void);
int wdeleteln(WINDOW *win);
int insdelln(int n);
int winsdelln(WINDOW *win, int n);
int insertln(void);
int winsertln(WINDOW *win);
DESCRIPTION
With the deleteln() and wdeleteln() routines, the line under the cursor in the window is deleted; all lines below the current line are
moved up one line. The bottom line of the window is cleared. The cursor position does not change. This does not imply use of a hardware
delete line feature.
With the insdelln() and winsdelln() routines, for positive n, insert n lines into the specified window above the current line. The n bot-
tom lines are lost. For negative n, delete n lines (starting with the one under the cursor), and move the remaining lines up. The bottom n
lines are cleared. The current cursor position remains the same.
With the insertln() and insertln() routines, a blank line is inserted above the current line and the bottom line is lost. This does not
imply use of a hardware insert line feature.
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
curses(3CURSES), attributes(5)
NOTES
The header <curses.h> automatically includes the headers <stdio.h> and <unctrl.h>.
Note that all but winsdelln() may be macros.
SunOS 5.10 31 Dec 1996 curs_deleteln(3CURSES)