m_option: allow -vf ""

With the current semantics, there's no reason to disallow this.

(Although in my opinion, -vf should rather map to -vf-add than -vf-set,
however that is an independent issue from this change.)

1 files changed, 3 insertions, 5 deletions

diff --git a/core/m_option.c b/core/m_option.c
index 6e02c537ad..2f6160c538 100644
--- a/core/m_option.c
+++ b/core/m_option.c
@@ -2177,9 +2177,6 @@ static int parse_obj_settings_list(const m_option_t *opt, struct bstr name,
         return obj_settings_list_del(name, param, dst);
     }
 
-    if (param.len == 0)
-        return M_OPT_MISSING_PARAM;
-
     if (!bstrcmp0(param, "help")) {
         m_obj_list_t *ol = opt->priv;
         mp_msg(MSGT_CFGPARSER, MSGL_INFO, "Available video filters:\n");
@@ -2207,8 +2204,9 @@ static int parse_obj_settings_list(const m_option_t *opt, struct bstr name,
             return M_OPT_INVALID;
         num++;
     }
-    if (num == 0)
-        return M_OPT_INVALID;
+
+    if (op != OP_NONE && param.len == 0)
+        return M_OPT_MISSING_PARAM;
 
     if (dst) {
         m_obj_settings_t *list = VAL(dst);