On 05/20/2014 09:50 AM, David Carlisle wrote: > One thing I meant to say, is if \mathsf{abc} is implemented by > switching to a sans font. > What to do about > > $ U+1D5BA U+1D5BB U+1D5BC $ > > that is > > MATHEMATICAL SANS-SERIF SMALL [ABC] I've been eavesdropping, and what I'm saying is essentially what others have said in various ways, but seems worth reiterating. To _me_ it seems rather fundamental that the various \mathsf, etc, not only request a family/shape/slant/whatever, but represent a single mathematical token. The spacing around it would be appropriate for ORD (normally, I guess), but within, the contents are essentially text (kerned, ligature, etc), not treated as a sequence of math symbols, independently of whether the eventual font turns out to be a "math" font. So, while David's 2 examples might very well choose the same font, I would expect the spacing around & between to be completely different. bruce