commit https://github.com/vim/vim/commit/b127cfd75f59e82580df395b6e2c009774644b16 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 29 16:24:50 2016 +0200 patch 7.4.1858 Problem: When a channel writes to a buffer it doesn't find a buffer by the short name but re-uses it anyway. Solution: Find buffer also by the short name.

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}\")