patch 9.0.1279: display shows lines scrolled down erroneously Commit: https://github.com/vim/vim/commit/61fdbfa1e3c842252b701aec12f45839ca41ece5 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 4 13:57:55 2023 +0000 patch 9.0.1279: display shows lines scrolled down erroneously Problem: Display shows lines scrolled down erroneously. (Yishai Lerner) Solution: Do not change "wl_lnum" at index zero. (closes https://github.com/vim/vim/issues/11938)

TYPEMAP
VIWIN	T_VIOBJNOMUNGE
VIBUF	T_VIOBJNOMUNGE

INPUT
T_VIOBJNOMUNGE
	if (sv_isa($arg, \"${ntype}\")) {
	    IV tmp = SvIV((SV*)SvRV($arg));
	    $var = INT2PTR($type, tmp);
	    if (!tmp)
		croak(\"$ntype no longer exists\");
	}
	else
	    croak(\"$var is not of type ${ntype}\")