this only makes sense if we have a target word set, which we usually do.
start with the target word and go backwords, finding k2s that lead to it
(and that lead to that k2, and so on) until we get to the start-of-chain
value, when we know we're done working backwards. then resume the normal
appending logic
probably needs some work, probably a bit slow on huge databases. analysis
pending, but this appears to work
WARNING! if you have an existing drbotzo_modules, you MUST RECREATE IT
WITH THE PRIMARY KEY. things will be wonky without it.
easiest way is to (by hand) create drbotzo_modules_temp as shown in the code,
INSERT INTO drbotzo_modules_temp SELECT * FROM drbotzo_modules, DROP the old
table, and ALTER TABLE RENAME TO the new one.
again, if you don't do this, newer modules will do all sorts of crazy
things, namely trying to create tables that already exist (because they have
multiple, differing values in drbotzo_modules)
check interval is every 10 minutes, rows in markov_chatter_target
have a 1 in chance chance of leading to a line being generated,
every 10 minutes. (so an interval of 144 = 10 min * 6 * 24 = one line
per day, on average)
Markov, Twitter: switch to forking a thread ourselves, and check every
second whether or not to quit. this is the "better" part above, as
now we can instantly quit the thread rather than waiting for all
the timers to fire and expire
track all lines seen and all lines said by Markov. every 30 seconds,
if there have been more than 20 such lines, and Markov is responsible
for roughly half of them, then shut up for 30 seconds, because the
bot probably got stuck talking to another bot.
this should mean that such a reply infinite loop can't happen for
more than a minute.
i'm not entirely sure on the 30 sec/20 lines ratio. this may need
tuning.
before, !alias commands were handled via an on_pubmsg() in DrBotIRC,
which meant they happened (due to refactoring) after alias and
recursion scanning happened in a more low-level routine.
thus, if you were trying to add an alias that had recursion in it,
your alias would be the outcome of that recursion, not the command
to recurse. oops
