player: kill associated OSD and key bindings when removing a script

The former was done already for Lua scripts, but move it to the generic
code.

input/input.c

@@ -73,6 +73,7 @@ struct cmd_bind {
 };
 
 struct cmd_bind_section {
+    char *owner;
     struct cmd_bind *binds;
     int num_binds;
     char *section;
@@ -1009,13 +1010,19 @@ static void remove_binds(struct cmd_bind_section *bs, bool builtin)
 }
 
 void mp_input_define_section(struct input_ctx *ictx, char *name, char *location,
-                             char *contents, bool builtin)
+                             char *contents, bool builtin, char *owner)
 {
     if (!name || !name[0])
         return; // parse_config() changes semantics with restrict_section==empty
     input_lock(ictx);
     // Delete:
     struct cmd_bind_section *bs = get_bind_section(ictx, bstr0(name));
+    if ((!bs->owner || (owner && strcmp(bs->owner, owner) != 0)) &&
+        strcmp(bs->section, "default") != 0)
+    {
+        talloc_free(bs->owner);
+        bs->owner = talloc_strdup(bs, owner);
+    }
     remove_binds(bs, builtin);
     if (contents && contents[0]) {
         // Redefine:
@@ -1027,6 +1034,21 @@ void mp_input_define_section(struct input_ctx *ictx, char *name, char *location,
     input_unlock(ictx);
 }
 
+void mp_input_remove_sections_by_owner(struct input_ctx *ictx, char *owner)
+{
+    input_lock(ictx);
+    struct cmd_bind_section *bs = ictx->cmd_bind_sections;
+    while (bs) {
+        if (bs->owner && owner && strcmp(bs->owner, owner) == 0) {
+            mp_input_disable_section(ictx, bs->section);
+            remove_binds(bs, false);
+            remove_binds(bs, true);
+        }
+        bs = bs->next;
+    }
+    input_unlock(ictx);
+}
+
 static bool bind_matches_key(struct cmd_bind *bind, int num_keys, const int *keys)
 {
     if (bind->num_keys != num_keys)

input/input.h

@@ -196,9 +196,13 @@ void mp_input_disable_all_sections(struct input_ctx *ictx);
 //  builtin: create as builtin section; this means if the user defines bindings
 //           using "{name}", they won't be ignored or overwritten - instead,
 //           they are preferred to the bindings defined with this call
+//  owner: string ID of the client which defined this, or NULL
 // If the section already exists, its bindings are removed and replaced.
 void mp_input_define_section(struct input_ctx *ictx, char *name, char *location,
-                             char *contents, bool builtin);
+                             char *contents, bool builtin, char *owner);
+
+// Remove all sections that have been defined by the given owner.
+void mp_input_remove_sections_by_owner(struct input_ctx *ictx, char *owner);
 
 // Define where on the screen the named input section should receive.
 // Setting a rectangle of size 0 unsets the mouse area.

player/client.c

@@ -416,6 +416,8 @@ void mpv_detach_destroy(mpv_handle *ctx)
                 ctx->num_events--;
             }
             mp_msg_log_buffer_destroy(ctx->messages);
+            osd_set_external(ctx->mpctx->osd, ctx, 0, 0, NULL);
+            mp_input_remove_sections_by_owner(ctx->mpctx->input, ctx->name);
             pthread_cond_destroy(&ctx->wakeup);
             pthread_mutex_destroy(&ctx->wakeup_lock);
             pthread_mutex_destroy(&ctx->lock);
@@ -759,6 +761,9 @@ mpv_event *mpv_wait_event(mpv_handle *ctx, double timeout)
 {
     mpv_event *event = ctx->cur_event;
 
+    if (!ctx->mpctx->initialized)
+        return NULL;
+
     pthread_mutex_lock(&ctx->lock);
 
     if (!ctx->fuzzy_initialized)

player/command.c

@@ -5282,7 +5282,8 @@ int run_command(struct MPContext *mpctx, struct mp_cmd *cmd, struct mpv_node *re
 
     case MP_CMD_DEFINE_INPUT_SECTION:
         mp_input_define_section(mpctx->input, cmd->args[0].v.s, "<api>",
-                                cmd->args[1].v.s, !!cmd->args[2].v.i);
+                                cmd->args[1].v.s, !!cmd->args[2].v.i,
+                                cmd->sender);
         break;
 
     case MP_CMD_AB_LOOP: {

player/lua.c

@@ -391,7 +391,6 @@ static int load_lua(struct mpv_handle *client, const char *fname)
     r = 0;
 
 error_out:
-    osd_set_external(ctx->mpctx->osd, client, 0, 0, NULL); // remove overlay
     mp_resume_all(client);
     if (ctx->state)
         lua_close(ctx->state);