void tf_backspace(TxtField *tf)
{
// Don't want this function running if there is no input.
if (tf == NULL || tf->length < 1)
return;
// The index in the message buffer to perform deletion.
unsigned delete_at = (TF_CURSOR_POS - 1) + ECHO_OFFSET;
for (size_t i = delete_at; i < tf->length; ++i)
tf->value[i] = tf->value[i + 1];
moveby(0, -1);
delch();
--tf->length;
if (get_cursor(X) <= tf->x)
tf_reset_echo(tf);
/* Remember: This can cause prompt to be removed by tf_backspace if cursor offset is not 0.
* Will fix after fixing the issue with inserting text in the middle of the message. */
}
void Grup<T, R>::moveBy(T a, T b)
{
MoveBy<T, R> moveby(a, b);
for_each(continut.begin(), continut.end(), moveby);
}
