I have sometimes replied to such a request with the tune notation and been told this is 'meaningless' and what the original poster wanted was the chords or the tablature. This always strikes me as 'playing by numbers'. Given a key, the basic chords are bleedin' obvious (aren't they?), though of course it does help to first work out what tuning the performer you are trying to copy is in. And then just experiment.

As Scrump says, it's just a skill that you might get quicker at (so I'm told and one day I might do it faster if I didn't feel compelled to write everything out before playing). On the other hand, part of the problem is the fixation held by some that any formal musical knowledge is just not f*lk.

In a thread about Willie o' Winsbury, someone complained that the chords given 'don't seem to work'. Problem was that s/he was using one of the alternate tunes, so of course they didn't. Presumably it was a mark of 'f*lk credibility' to be unable to read off the melody from the notation given but I really do think this is just so much pretentious nonsense. Sight reading and basic harmony are just skills that make musical communication and learning simpler.