From ae710059291ba9830a9b20d899bdef6a5122dd73 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Fri, 8 Jan 2010 23:13:39 -0800 Subject: Doc/examples: clarify usage messages Update/bugfix the "hello" example; emphasize using EBNF syntax, matching the User's Guide. Correct the Texinfo style guide to say EBNF, not BNF. Signed-off-by: David Brownell --- doc/manual/primer/commands.txt | 13 +++++++++---- doc/manual/style.txt | 2 +- 2 files changed, 10 insertions(+), 5 deletions(-) (limited to 'doc/manual') diff --git a/doc/manual/primer/commands.txt b/doc/manual/primer/commands.txt index 61697349..5f89d506 100644 --- a/doc/manual/primer/commands.txt +++ b/doc/manual/primer/commands.txt @@ -68,9 +68,9 @@ static const struct command_registration hello_command_handlers[] = { { .name = "hello", .mode = COMMAND_ANY, - .handler = &handle_hello_command, - .help = "print a warm greetings", - .usage = "[]", + .handler = handle_hello_command, + .help = "print a warm greeting", + .usage = "[name]", }, { .chain = foo_command_handlers, @@ -84,7 +84,12 @@ int hello_register_commands(struct command_context_s *cmd_ctx) } @endcode -That's it! The command should now be registered and avaiable to scripts. +Note that the "usage" text should use the same EBNF that's found +in the User's Guide: literals in 'single quotes', sequences of +optional parameters in [square brackets], and alternatives in +(parentheses|with|vertical bars), and so forth. No angle brackets. + +That's it! The command should now be registered and available to scripts. @section primercmdchain Command Chaining diff --git a/doc/manual/style.txt b/doc/manual/style.txt index 71bb5f6b..87b1e6ba 100644 --- a/doc/manual/style.txt +++ b/doc/manual/style.txt @@ -308,7 +308,7 @@ For technical reference material: - Else it's a "Config Command" if it must be used before the configuration stage completes. - For a "Driver", list its name. - - Use BNF style regular expressions to define parameters: + - Use EBNF style regular expressions to define parameters: brackets around zero-or-one choices, parentheses around exactly-one choices. - Use \@option, \@file, \@var and other mechanisms where appropriate. -- cgit v1.2.3