The current definition of letter includes a..z and A..Z, _, del, high minus and underscored del.
I would like to request three additional UTF-8 characters to be added: Overline E2 80 BE (UTF-8), complementary to _ (underline) Combining underline CC B2 (UTF-8) -- if this follows a letter, the letter is rendered with an underline. Combining overline CC 85 (UTF-8)-- if this follows a letter, the letter is rendered with an overline. As well, I would like combining overline to be included in the definition of numeric digit: this can be used to mark digits as repeating in code: 0.3(overbar) could be expanded to 0.33.. (as many as needed to fill the precision). 2.1(overbar)2(overbar) should become 2.121212... (as many as needed). Of course, I am be insane (my mother never had me tested). Fred Weigel
