Any kind of regex patterns and restrictions can be achieved by utilizing the inputs provided in the RestrictInputs client action. 
A) Restriction Type needs to be passed. E.g. (Note: A-Alphabets, LA-LowerAlpha.., UA-UpperAlpha.., SC-SpecialCharactes, N-Numbers)
A- allow only A
LA- allow only LA
UA- allow only UA
swA- any value but only starts with A
swLA- any value but only starts with LA
swUA- any value but only starts with UA
N- allow only N
swN- any value but only starts with N
SC- allow only SC
swSC- any value but only starts with SC
A&SC- allow only A and SC
LA&SC- allow only LA and SC
UA&SC- allow only UA and SC
swAorSC- any value but only starts with A or SC
swLAorSC- any value but only starts with LA or SC
swUAorSC- any value but only starts with UA or SC
A&N- allow only A and N
LA&N - allow only LA and N
UA&N - allow only UA and N
swAorN- any value but only starts with A or N
swLAorN- any value but only starts with LA or N
swUAorN- any value but only starts with UA or N
N&SC- allow only N and SC
swNorSC- any value but only starts with N or SC
GV- allow only any given value(s) mentioned in SpecificValues(s)ToAllow input

B) Specific value(s) can be passed to allow along with the RestrictionType chosen. It allows users to enter the given specific values along with the given RestrictionType. The specific value can be any single or list of values. E.g. ! or 123!@# or abc$%*.

C) Specific value(s) can be passed to restrict. It prevents users from entering this given specific value(s). The specific value can be any single or list of values. E.g. ! or 123!@# or abc$%*.

D) Specific value(s) to be start with can be passed. It allows users to enter values with first character as only given specific value(s).

E) HasSpaceNOTAllowed - True/False

F) HasSpaceNOTAllowedOnlyAtFirst - True/False

G) HasRestrictCopy - True/False

H) HasRestrictPaste - True/False

I) HasValidateEmail - True/False