U+2019 is normally the character used, except where the ’ is considered a letter. When it is between letters it doesn't cause a word break, but because it is also a right single quote, at the end of words there is a break. Thus in a phrase like «tryin’ to go» there is a word break after the n, because one can't tell.
So something like "δ’ αρχαια" (picking a phrase at random) would have a word break after the delta. Word break: δ’ αρχαια However, there is no *line break* between them (which is the more important operation in normal usage). Probably not worth tailoring the word break. Line break: δ’ αρχαια Mark On Fri, Jan 25, 2019 at 1:10 PM James Tauber via Unicode < unicode@unicode.org> wrote: > There seems some debate amongst digital classicists in whether to use > U+2019 or U+02BC to represent the apostrophe in Ancient Greek when marking > elision. (e.g. δ’ for δέ preceding a word starting with a vowel). > > It seems to me that U+2019 is the technically correct choice per the > Unicode Standard but it is not without at least one problem: default word > breaking rules. > > I'm trying to provide guidelines for digital classicists in this regard. > > Is it correct to say the following: > > 1) U+2019 is the correct character to use for the apostrophe in Ancient > Greek when marking elision. > 2) U+02BC is a misuse of a modifier for this purpose > 3) However, use of U+2019 (unlike U+02BC) means the default Word Boundary > Rules in UAX#29 will (incorrectly) exclude the apostrophe from the word > token > 4) And use of U+02BC (unlike U+2019) means Glyph Cluster Boundary Rules in > UAX#29 will (incorrectly) include the apostrophe as part of a glyph cluster > with the previous letter > 5) The correct solution is to tailor the Word Boundary Rules in the case > of Ancient Greek to treat U+2019 as not breaking a word (which shouldn't > have the same ambiguity problems with the single quotation mark as in > English as it should not be used as a quotation mark in Ancient Greek) > > Many thanks in advance. > > James >