Can I Do This

[snow]

I've read about scripts that play crawl for you. That's cool and all but can a similar script be made that simply recasts buffs before they wear off? How would I go about writing it and turning it on? Can such a script be used online?

[galehar]

This won't be easy. You would need to write a lua script. Check dat/lua/autofight.lua and other lua scripts for examples. But not everything is exposed to lua, so maybe you will need to also patch the source to add the needed lua hooks. If you achieve it, you'll be able to use your script online, as long as it doesn't put too much stress on the server (if it does, your code is wrong).
Or implement permanent spell effects

[igomadness]

Another way might be to use a MUD client to connect. Some have some very powerful regexp matching triggers.

I imagine one could make it completely automated in that manner, but you would have to be a godly scripter.

[7hm]

This won't be easy. You would need to write a lua script. Check dat/lua/autofight.lua and other lua scripts for examples. But not everything is exposed to lua, so maybe you will need to also patch the source to add the needed lua hooks. If you achieve it, you'll be able to use your script online, as long as it doesn't put too much stress on the server (if it does, your code is wrong).
Or implement permanent spell effects

Even if it was exposed to lua, you would also need to be calling the script every turn as its not automated. That'd be fairly annoying.

Though I guess you could set something up where any keypress called the overall setting function.

[galehar]

This won't be easy. You would need to write a lua script. Check dat/lua/autofight.lua and other lua scripts for examples. But not everything is exposed to lua, so maybe you will need to also patch the source to add the needed lua hooks. If you achieve it, you'll be able to use your script online, as long as it doesn't put too much stress on the server (if it does, your code is wrong).
Or implement permanent spell effects

Even if it was exposed to lua, you would also need to be calling the script every turn as its not automated. That'd be fairly annoying.

Though I guess you could set something up where any keypress called the overall setting function.

If there's not a way to trigger a call to a lua script based on messages, we can code it. Anything is possible as long as someone codes it
But at some point, it makes more sense to fix the underlying issue rather than code a whole mess to work around it.