sillsdev
Tone marks behave differently than diacritics
I'm sorry I don't have the specifics on this one. I meant to write it up months ago, but things happened to me. I thought I had it in my email drafts or something, but I don't. I thought I would mention it anyway, in case someone else bumps into it. It could be the same issue.
The problem is that Cog deals with tone marks (˩ ˥) differently than if I used diacritics for tone (è é). It could be the same problem I was talking about in issue #49, but I don't think so. I had a specific example at one time. I do know for sure that I ended up removing all the tone marks and putting in diacritics. That was not fun.
Could it have something to do with syllabification? Tone letters do affect syllabification. Cog uses them as syllable breaks. The tone diacritics do not have this effect.
It might have had something to do with syllabification, but it might not have been. Seems to me the tone marks affected the likely cognate/non-cognate analysis in the Compare / Variety Pairs tab. If I'm mistaken, that in turn affects the similarity matrices.
While tone letters are often (usually?) written at the end of syllables, I'm not sure if it's a good idea for Cog to use them as syllable breaks. I'm still thinking through that. But given that both diacritics and tone marks are used to mark tone, even phonetically, I think they should have the same outcome regardless which is used.
I did have a specific example at one time. I don't know what happened to it. I have since stepped away from the position and the two languages I was working on. Again, apologies.