#this is another one where they embedded images of certain numbers/punctuation rather than typing them...

[snarp]

Current record-holder for unnecessary ebook font-embed bloat: this 23MB Arial is never actually used. But it appears in a couple unused classes in the stylesheet, preventing the Calibre autofixer from recognizing it as "not referenced" and removing it.

[snarp]

#this is another one where they embedded images of certain numbers/punctuation rather than typing them… #…but in this case it wasn't being done automatically by OCR. human being naming the file for an image of '1/5' 'one-over-five.png' #they added alt text! and the alt text says 'picture'

Going back to this fucked-up ebook after a tangent researching OpenType font feature CSS support:

Charis SIL supports the OpenType 'frac' feature. If what the publisher was trying to do with those embedded images was ensure that all fractions - those that are available as Unicode "Vulgar Fraction" characters and those that aren't - were formatted the same way, then this font could theoretically have done that for them...

But they used the wrong Charis: the embedded version doesn't have 'frac'.

Current record-holder for unnecessary ebook font-embed bloat: this 23MB Arial is never actually used. But it appears in a couple unused classes in the stylesheet, preventing the Calibre autofixer from recognizing it as "not referenced" and removing it.