ediff-hide-regexp-matches

ediff-hide-regexp-matches is a compiled Lisp function in `ediff-util.el'.

(ediff-hide-regexp-matches N)

Hide diffs that match regexp `ediff-regexp-hide-A/B/C'.
Regions to be ignored are those where buf A region matches
`ediff-regexp-hide-A' and buf B region matches `ediff-regexp-hide-B'.
This function returns nil if the region number N (specified as
an argument) is not to be ignored and t if region N is to be ignored.

N is a region number used by Ediff internally. It is 1 less
the number seen by the user.