1# metacharacters, backslashes 2a.c & abc abc 3a[bc]d & abd abd 4a\*c & a*c a*c 5a\\b & a\b a\b 6a\\\*b & a\*b a\*b 7# Begin FreeBSD 8a\bc &CP EESCAPE 9# End FreeBSD 10a\ &C EESCAPE 11a\\bc & a\bc a\bc 12\{ bC BADRPT 13a\[b & a[b a[b 14a[b &C EBRACK 15# trailing $ is a peculiar special case for the BRE code 16a$ & a a 17a$ & a$ 18a\$ & a 19a\$ & a$ a$ 20a\\$ & a 21a\\$ & a$ 22a\\$ & a\$ 23a\\$ & a\ a\ 24