Feature Request: Relative jump using M-x goto-line

[Sivaram Neelakantan]

Can M-x goto-line have options to take numbers with +- values, so that
it goes to line +lines from current position or -lines from current
position?

M-x goto-line +40, should go 40 lines forward
M-x goto-line -30  goes 30 lines backward.
M-x goto-line 24   goes to line 24

I'd find this useful when working with files having header and trailer
records. 


 sivaram
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