Hello Unicode Mailing List,
There is significant discussion about the problems of adding capital letters with individual under-bars in this mailing list for GNU APL.
Pretty much it adds up to the following problem:
The string length functionality would view an 'A' code point combined with an '_' code point as an item that has two elements, while something that looks like 'A' Should be atomic, and return a length of one.
I have heard that the problem was brought to Unicode consortium before, and the answer was to just use the underline styling, as it is apparently equivalent, but I do not think it is. Underline styling usually connects the line from one letter to another like this. The under-bar characters do not do such connecting, and are actually only for capital letters. so It would look more L I K E T H I S (I added the spaces for dramatic effect).
Is there something I could do to make this addition to the Unicode standard? There is already a section for APL symbols.
-Alex Weiner