Re: [Help-nano] Still struggling with backspace issue

[David Benbennick]

I am pretty sure the backspace issue is caused by a bug in either Konsole
1.0.1 or ncurses 5.2.  Here is a C program to exercise the bug:


#include<ncurses.h>

int main() {
    WINDOW *win;
    int ch;
    int curr_x = 0;

    win = initscr();
    while (1) {
        ch = getch();
        if (ch==ERR)
            fprintf(stderr, "getch() returned ERR\n");
        if (ch=='a')
            curr_x++;
        if (ch=='b')
            curr_x--;
        if (wmove(win, 0, curr_x)==ERR)
            fprintf(stderr, "wmove(0, %d) returned ERR\n", curr_x);
        if (wrefresh(win)==ERR)
            fprintf(stderr, "wrefresh(win) returned ERR\n");
    }
}


On my system, typing 8 'a's followed by a 'b' makes the window look like
this:

aaaaaaaab
        ^------ cursor is still here, should have moved left.

Also, on the stderr of the terminal calling Konsole is the text

undecodable token: \001b(hex)[Z


I will keep working to determine whether this bug is in ncurses or
Konsole.


David