Port to Neovim: Add fallback to s:RightRelease to use getmousepos() if s:click is uninitialized, ensuring plumbing works even if RightMouse event is missed or blocked.

Author: mcepl

plugin/acme.vim

@@ -1015,6 +1015,14 @@ function s:MiddleRelease(click)
 endfunc
 
 function s:RightRelease(click)
+	if s:click.winid == 0
+		let s:click = getmousepos()
+		let s:clickwin = win_getid()
+		let s:clickstatus = s:click.line == 0 ? win_id2win(s:click.winid) : 0
+		let s:clickmode = 'n'
+		let s:clicksel = 0
+	endif
+
 	if s:click.winid == 0
 		return
 	elseif s:clickstatus != 0