Commit f67e7eea4300fef71fd23b883fe0d5e35241c6ec

Rm excessive regexp (already covered by previous check).
  
5151/\^/ {
5252w /dev/stderr
5353q 56;} # (mostly GNU sed extensions)
54/\^\|\(^\|[^\\]\)[[:upper:]]/ { # [^\\] -- a workaround for grammatical terms,
54/\(^\|[^\\]\)[[:upper:]]/ { # [^\\] -- a workaround for grammatical terms,
5555# to escape these restrictions on Latin characters: write them like \Pres, \Gen etc.
5656# FIXME: I also use this workaround for filenames, e.g.: \Komi_rus_slovar1.pdf, but
5757# this should be replaced for the sake of universality with smth like