RE_BACKSLASH_ESCAPE_IN_LISTS
(RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \
((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG) \
(RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \
# define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
if ((syntax & RE_BACKSLASH_ESCAPE_IN_LISTS) && c == '\\')
(RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \
(RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS)
#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
if (c == '\\' && (syntax & RE_BACKSLASH_ESCAPE_IN_LISTS)