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- How to use SERIAL NUMBERS
- This describes the use of serial numbers in ON functions,
- and is a direct extension of the basic ON help file.
-
- It is now possible to have more than one ON hook executed for
- each event triggering a hook. This has been done by adding a
- new serial number concept to the ON command. Each ON hook has
- a serial number attached. Serial numbers can be any number
- from -maxint to maxint, with the default being 0.
-
- When an event triggers a hook, IRCII now goes through the ON
- hooks added for that event, and for each serial number used
- by ON hooks in that hook type, finds the best match out of those
- ON hooks which have that serial number and executes that ON
- hook. The hooks are executed in order of serial number. Thus
- if you set up the following set of MSG hooks.
-
- ON #^MSG -666 * echo Message coming:
- ON ^MSG * echo Message from $0: $1-
- ON #^MSG 666 * echo I got one, I got one!
- ON #^MSG 666 WiZ echo WiZ hath spoken
-
- will cause the following to appear when you receive a message:
-
- Message coming:
- Message from nick: text
- I got one, I got one!
-
- And the following if you receive a message from WiZ:
-
- Message coming:
- Message from WiZ: text
- WiZ hath spoken
-
- The default serial number is 0, and the serial numbers are always
- executed in order, starting with the lowest, and ending with the
- highest.
-
- Although the '^' modifier can be used with any serial number,
- it will only suppress the default action if used with serial
- number 0. Thus if the only message hook you have is:
-
- ON #^MSG -666 * echo Incoming:
-
- You will see the following when you receive a message:
-
- Incoming:
- *nick* text
-
- It is advisable to place any ON hooks which do not suppress the
- default action in a serial number other than 0. In particular,
- TIMER hooks, which are generally not intended to exclude other
- TIMER hooks, should be placed at different serial numbers wherever
- possible, and never on 0 (since 0 is the most likely place to
- get a clash if anybody does use it).
-
- See Also:
- ON
-