1 files changed, 3 insertions, 1 deletions
diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index 91b8628c33..34f306bdfd 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -5248,7 +5248,9 @@ static int get_tabpage_arg(exarg_T *eap)
       tab_number = 0;
     } else {
       tab_number = (int)eap->line2;
-      if (!unaccept_arg0 && *skipwhite(*eap->cmdlinep) == '-') {
+      char *cmdp = eap->cmd;
+      while (--cmdp > *eap->cmdlinep && (*cmdp == ' ' || ascii_isdigit(*cmdp))) {}
+      if (!unaccept_arg0 && *cmdp == '-') {
         tab_number--;
         if (tab_number < unaccept_arg0) {
           eap->errmsg = e_invarg;