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These have been bugging me for a while. - `literal_text`: `src` is also used and is shorter and better. - `first_char`: used even when "first" doesn't make sense; `c` is shorter and better. - `curr`: `c` is shorter and better. - `unescaped_char`: `result` is also used and is shorter and better. - `second_char`: these have a single use and can be elided.