13. The system of claim 12 , wherein the determination logic is configured to determine that the user-initiated change is an addition or a subtraction of whitespace with respect to the designated token; wherein the determination logic is configured to determine that the second subset of the tokens is not to be re-tokenized in response to the user-initiated change being an addition or a subtraction of whitespace with respect to the designated token; and wherein the token generation logic is further configured to update the character positions of the tokens in the second subset of the tokens to take into consideration the user-initiated change.
12. A system comprising: token generation logic configured to generate a sequence of tokens using at least one processor, each token being an integer representation of a respective sequence of characters that is included in a style sheet, each token corresponding to a respective character position that indicates a position of that token in the style sheet; token identification logic configured to identify a designated token in the sequence of tokens that includes a user-initiated change, the designated token following a first subset of the tokens in the sequence of tokens and preceding a second subset of the tokens in the sequence of tokens; and determination logic configured to determine whether the user-initiated change is identified as a type of change that changes no attributes, other than the character positions, of the tokens in the second subset of the tokens, the determination logic further configured to determine that the second subset of the tokens is not to be re-tokenized in response to the user-initiated change being identified as a type of change that changes no attributes, other than the character positions, of the tokens in the second subset of the tokens, the determination logic further configured to determine that the second subset of the tokens is to be re-tokenized in response to the user-initiated change not being identified as a type of change that changes no attributes, other than the character positions, of the tokens in the second subset of the tokens.