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# legacy escape
8#a\bc		&	abc	abc
9a\		&C	EESCAPE
10a\\bc		&	a\bc	a\bc
11\{		bC	BADRPT
12a\[b		&	a[b	a[b
13a[b		&C	EBRACK
14# trailing $ is a peculiar special case for the BRE code
15a$		&	a	a
16a$		&	a$
17a\$		&	a
18a\$		&	a$	a$
19a\\$		&	a
20a\\$		&	a$
21a\\$		&	a\$
22a\\$		&	a\	a\
23