Furthermore it is recommended that you disable the Keep Windows Open option, otherwise it will fill your channel with the history over and over.
Where is that recommended? Just enable it and you won't need to add yet another feature to mIRC. The 'keep channel windows open' sounds like exactly the feature you are asking for.....
lso - I still don't see the point. logfiles are not for storing stuff you then load into your mIRC, read them offline.
