According to :help arglistid(), it returns zero for invalid argument. But it returns -1 instead.
diff -r 7af530381fec runtime/doc/eval.txt --- a/runtime/doc/eval.txt Sun Aug 17 17:24:07 2014 +0200 +++ b/runtime/doc/eval.txt Tue Aug 19 21:28:25 2014 +0900 @@ -2113,7 +2113,7 @@ Return the argument list ID. This is a number which identifies the argument list being used. Zero is used for the global argument list. - Return zero if the arguments are invalid. + Return -1 if the arguments are invalid. Without arguments use the current window. With {winnr} only use this window in the current tab page. -- Yukihiro Nakadaira - yukihiro.nakada...@gmail.com -- -- You received this message from the "vim_dev" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to vim_dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.