vis-lua: check for nil return value of text object callback

1 files changed, 1 insertions, 1 deletions

diff --git a/vis-lua.c b/vis-lua.c
index cda9dd9..2a1d05f 100644
--- a/vis-lua.c
+++ b/vis-lua.c
@@ -938,7 +938,7 @@ static Filerange textobject_lua(Vis *vis, Win *win, void *data, size_t pos) {
 	if (!func_ref_get(L, data) || !obj_ref_new(L, win, "vis.window"))
 		return text_range_empty();
 	lua_pushunsigned(L, pos);
-	if (pcall(vis, L, 2, 2) != 0)
+	if (pcall(vis, L, 2, 2) != 0 || lua_isnil(L, -1))
 		return text_range_empty();
 	return text_range_new(checkpos(L, -2), checkpos(L, -1));
 }