The vim documents says:When all items in a group becomes an empty string (i.e. flags that are    not set) and a minwid is not set for the group, the whole group will    become empty.But it doesn't work in vim8.0 if I set highlight group. e.glet &stl='%(%#Keyword#ccc%{}ccc%)'It should show nothing, but it still shows 'cccccc' in statusline.It works as expectation if there are no highlight group in them.BTW, it works in vim7.4.1023 (indeed, all the previous version work)
gvim8 statusline behave differently from gvim7
statusline