Adjacent character sequences and/or ranges within square brackets

[^a][^p][^p][^l][^e]

Adjacent '?'

a??

Adjacent '?' and character sequences and/or ranges within square brackets

[^a][^p][^p]??

Adjacent '?' and '*' wild cards

ab?*?*?

Adjacent '?' and character range

ab[abc]?[d-z]

Adjacent '*' and character range

ab[abc]*[d-z]

Wild card '+' followed by wild card '?'

ab+?

Wild card '+' followed by wild card '*'

ab+*

Wild card '+' followed by '[ ]'

ab+[abc]

Adjacent '*' wild cards

e** will return an error

Error 4100: Adjacent '*' wild cards are meaningless, and thus are not allowed

Wild card '+' or numeric repetition range \{m,n\}

at the beginning of a pattern followed by any wild card

++, +*, +?, +[abc], \{m,n\}+,

\{m,n\}*, \{m,n\}?,\{m,n\}[abc]

Error 4153: Wild card '+' by itself is meaningless since it has to follow some valid symbol

Wild card '+' or numeric repetition range \{m,n\} following wild card '*'

*+, * \{m,n\}

Error 4153: Precedence rules for wild card '+' are violated