Availability:built-in
[semidet]sub_atom_icasechk(+Haystack,
?Start, +Needle)True when Needle is a sub atom of Haystack
starting at
Start. The match is‘half case insensitive', i.e.,
uppercase letters in Needle only match themselves, while
lowercase letters in Needle match case insensitively. Start
is the first 0-based offset inside Haystack where Needle
matches.110This predicate replaces $apropos_match/2,
used by the help system, while extending it with locating the (first)
match and performing case insensitive prefix matching. We are still not
happy with the name and interface.