Checks whether the input string begins with an unencoded entity.
Note: a full string has to be passed (not just a single character), as '&' is an unencoded entity, but "&" is not - these cases are not distinguishable from just the 1st character.
string to check
true if the first character in the input string is an unencoded entity
See Implementation
Checks whether the input string begins with an unencoded entity.
Note: a full string has to be passed (not just a single character), as '&' is an unencoded entity, but "&" is not - these cases are not distinguishable from just the 1st character.