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Make "usage" messages more helpful.

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In case of incorrect command invocations U-Boot used to print pretty
useless "usage" messages, for example:

	=> nand markbad
	Usage:
	nand - NAND sub-system

In the result, the user would have to run the "help" command to get
the (available) information about correct command usage. Change this,
so that this information gets always printed.

Note that this changes the user interface of all commands, but
hopefully to the better.

Signed-off-by: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Wolfgang Denk
2009-05-24 19:17:29 +02:00
parent 4c94f6c54b
commit 94796d8544
2 changed files with 17 additions and 18 deletions
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2
include/command.h
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@ -71,7 +71,7 @@ int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
cmd_tbl_t *find_cmd(const char *cmd);
cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len);
extern void cmd_usage(cmd_tbl_t *cmdtp);
extern int cmd_usage(cmd_tbl_t *cmdtp);
#ifdef CONFIG_AUTO_COMPLETE
extern void install_auto_complete(void);