[PATCH v8 3/6] GDB: Add references to erased args in cli-decode.c

["Maciej W. Rozycki" <macro@embecosm.com>]

Complement commit 1d7fe7f01b93 ("gdb: Introduce setting construct within 
cmd_list_element") and commit 702991711a91 ("gdb: Have setter and getter 
callbacks for settings") and update inline documentation accordingly for 
`add_set_or_show_cmd' and `add_setshow_cmd_full_erased', documenting the 
`args' parameter and removing references to `var', `set_setting_func' 
and `get_setting_func'.
---
New change in v8.
---
 gdb/cli/cli-decode.c |   17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

gdb-setshow-cmd-erased-args-doc.diff
Index: src/gdb/cli/cli-decode.c
===================================================================
--- src.orig/gdb/cli/cli-decode.c
+++ src/gdb/cli/cli-decode.c
@@ -496,11 +496,8 @@ empty_func (const char *args, int from_t
    TYPE is set_cmd or show_cmd.
    THECLASS is as in add_cmd.
    VAR_TYPE is the kind of thing we are setting.
-   VAR is address of the variable being controlled by this command.
-   SET_SETTING_FUNC is a pointer to an optional function callback used to set
-   the setting value.
-   GET_SETTING_FUNC is a pointer to an optional function callback used to get
-   the setting value.
+   ARGS is a pre-validated type-erased reference to the variable being
+   controlled by this command.
    DOC is the documentation string.  */
 
 static struct cmd_list_element *
@@ -526,12 +523,10 @@ add_set_or_show_cmd (const char *name,
 
 /* Add element named NAME to both the command SET_LIST and SHOW_LIST.
    THECLASS is as in add_cmd.  VAR_TYPE is the kind of thing we are
-   setting.  VAR is address of the variable being controlled by this
-   command.  If nullptr is given as VAR, then both SET_SETTING_FUNC and
-   GET_SETTING_FUNC must be provided. SET_SETTING_FUNC and GET_SETTING_FUNC are
-   callbacks used to access and modify the underlying property, whatever its
-   storage is.  SET_FUNC and SHOW_FUNC are the callback functions (if non-NULL).
-   SET_DOC, SHOW_DOC and HELP_DOC are the documentation strings.
+   setting.  ARGS is a pre-validated type-erased reference to the
+   variable being controlled by this command.  SET_FUNC and SHOW_FUNC
+   are the callback functions (if non-NULL).  SET_DOC, SHOW_DOC and
+   HELP_DOC are the documentation strings.
 
    Return the newly created set and show commands.  */