Derive Macro BotCommands 

#[derive(BotCommands)]
{
    // Attributes available to this derive:
    #[command]
}

Derive macro that generates command-parsing infrastructure for a Telegram bot.

Annotate an enum with #[derive(BotCommands)] to automatically generate:

• parse(text, bot_name) -> Result<Self, ParseError> – parse incoming message text
• descriptions() -> String – formatted help text for all commands
• bot_commands() -> Vec<BotCommand> – suitable for the setMyCommands API call

Enum-level attributes

Attribute	Default	Description
rename_rule	"identity"	How variant names map to command strings
prefix	"/"	Command prefix character(s)
description	none	Global description header for help text
command_separator	" "	Separator between the command and its arguments

Variant-level attributes

Attribute	Description
description	Help text for this command
rename	Override the command string for this variant
parse_with	"default", "split", or a custom fn(String) -> Result<T, E>
separator	Argument separator when using parse_with = "split"
hide	Exclude from help text and bot_commands()