17. The handheld electronic device of claim 16 wherein the operations further comprise: as at least a portion the making of the determination: determining that one of the characters of the series fails to validly correspond with a predetermined portion of the data set, the one of the characters being the first character in the series to fail to validly correspond with a predetermined portion of the data set, and for each spell check algorithm of at least some of the number of spell check algorithms: determining that the one of the characters is within a predetermined edit distance from a predetermined portion of the data set, and storing a representation of a character set of the data set as a state of the spell check algorithm; and for each character of at least some of the characters of the series received subsequent to the one of the characters, determining for each spell check algorithm of at least some of the number of spell check algorithms that the character validly corresponds with at least one of the characters in the character set represented by the state of the spell check algorithm and responsively changing the state of the spell check algorithm to be representative of another character set of the data set.
17. The handheld electronic device of claim 16 wherein the operations further comprise: as at least a portion the making of the determination: determining that one of the characters of the series fails to validly correspond with a predetermined portion of the data set, the one of the characters being the first character in the series to fail to validly correspond with a predetermined portion of the data set, and for each spell check algorithm of at least some of the number of spell check algorithms: determining that the one of the characters is within a predetermined edit distance from a predetermined portion of the data set, and storing a representation of a character set of the data set as a state of the spell check algorithm; and for each character of at least some of the characters of the series received subsequent to the one of the characters, determining for each spell check algorithm of at least some of the number of spell check algorithms that the character validly corresponds with at least one of the characters in the character set represented by the state of the spell check algorithm and responsively changing the state of the spell check algorithm to be representative of another character set of the data set. 18. The handheld electronic device of claim 17 wherein the operations further comprise: determining that a particular character of the series received subsequent to the one of the characters fails to validly correspond with any of the characters in the character set represented by the state of at least one spell check algorithm; and disregarding the at least one spell check algorithm as characters in the series are received subsequent to the particular character.