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Re: [Qemu-devel] [PATCH v2] monitor: print message when using 'help' wit
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH v2] monitor: print message when using 'help' with an unknown command |
Date: |
Tue, 25 Sep 2018 11:40:55 +0100 |
User-agent: |
Mutt/1.10.1 (2018-07-13) |
* Collin Walling (address@hidden) wrote:
> When typing 'help' followed by an unknown command, QEMU will
> not print anything to the command line to let the user know
> they typed a bad command. Let's fix this by printing a message
> to the monitor when this happens. For example:
>
> (qemu) help xyz
> unknown command: 'xyz'
>
> Reported-by: Stefan Zimmermann <address@hidden>
> Signed-off-by: Collin Walling <address@hidden>
Queued (at last!)
> ---
> monitor.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/monitor.c b/monitor.c
> index 7af1f18..deeb41c 100644
> --- a/monitor.c
> +++ b/monitor.c
> @@ -1013,6 +1013,7 @@ static void help_cmd_dump(Monitor *mon, const mon_cmd_t
> *cmds,
> char **args, int nb_args, int arg_index)
> {
> const mon_cmd_t *cmd;
> + size_t i;
>
> /* No valid arg need to compare with, dump all in *cmds */
> if (arg_index >= nb_args) {
> @@ -1034,9 +1035,15 @@ static void help_cmd_dump(Monitor *mon, const
> mon_cmd_t *cmds,
> } else {
> help_cmd_dump_one(mon, cmd, args, arg_index);
> }
> - break;
> + return;
> }
> }
> +
> + /* Command not found */
> + monitor_printf(mon, "unknown command: '");
> + for (i = 0; i <= arg_index; i++) {
> + monitor_printf(mon, "%s%s", args[i], i == arg_index ? "'\n" : " ");
> + }
> }
>
> static void help_cmd(Monitor *mon, const char *name)
> --
> 2.7.4
>
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK