lua: always handle key repeat on the script side

Simpler, and leaves the decision to repeat or not fully to the script
(instead of requiring the user to care about it when remapping a script
binding).

input/cmd_list.c

@@ -166,7 +166,9 @@ const struct mp_cmd_def mp_cmds[] = {
 
   { MP_CMD_VO_CMDLINE, "vo_cmdline", { ARG_STRING } },
 
-  { MP_CMD_SCRIPT_BINDING, "script_binding", { ARG_STRING } },
+  { MP_CMD_SCRIPT_BINDING, "script_binding", { ARG_STRING },
+    .allow_auto_repeat = true},
+
   { MP_CMD_SCRIPT_MESSAGE, "script_message", { ARG_STRING }, .vararg = true },
   { MP_CMD_SCRIPT_MESSAGE_TO, "script_message_to", { ARG_STRING, ARG_STRING },
     .vararg = true },

player/lua/defaults.lua

@@ -75,7 +75,7 @@ function mp.set_key_bindings(list, section, flags)
                 local is_mouse = state:sub(2, 2) == "m"
                 local def = (is_mouse and "u") or "d"
                 if event == "r" then
-                    event = "d"
+                    return
                 end
                 if event == "p" and cb then
                     cb()
@@ -142,9 +142,7 @@ local function add_binding(attrs, key, name, fn, rp)
         name = reserve_binding()
     end
     local bind = key
-    if rp == "repeatable" or rp["repeatable"] then
-        bind = bind .. " repeatable"
-    end
+    local repeatable = rp == "repeatable" or rp["repeatable"]
     if rp["forced"] then
         attrs.forced = true
     end
@@ -176,6 +174,9 @@ local function add_binding(attrs, key, name, fn, rp)
             -- Also, key repeat triggers the binding again.
             local event = state:sub(1, 1)
             local is_mouse = state:sub(2, 2) == "m"
+            if event == "r" and not repeatable then
+                return
+            end
             if is_mouse and event == "u" then
                 fn()
             elseif (not is_mouse) and (event == "d" or event == "r") then