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The (faulty) detection of recursive Aliases was removed in a656fd06930541103c70297825d6f5f5956ecc45, claiming that "our nesting limit will catch issues now." However, nested Aliases weren't actually increasing the nesting level. Actually increasing the nesting level when an alias is executed restores the intended behavior. Additionally, limiting the size of the expanded arguments to an alias prevents exponential growth of memory usage for certain malicious inputs/aliases. Signed-off-by: James McCoy <vega.james@gmail.com>
This plugin allows the user to create various aliases to other commands or combinations of other commands (via nested commands). It is a good idea to always quote the commands that are being aliased so that any nested commands are not immediately run. Basic usage ----------- Add an alias, trout, which expects a word as an argument <jamessan> @alias add trout "action slaps $1 with a large trout" <bot> jamessan: The operation succeeded. <jamessan> @trout me * bot slaps me with a large trout Add an alias, lastfm, which expects a last.fm user and replies with their recently played items. @alias add lastfm "rss [format concat http://ws.audioscrobbler.com/1.0/user/ [format concat [urlquote $1] /recenttracks.rss]]" Note that if the nested commands being aliased hadn't been quoted, then those commands would have been run immediately, and @lastfm would always reply with the same information, the result of those commands.