Quote:
Originally Posted by JSWolf
And in some cases, even if soft hyphens are displayed correctly, they can break searching.
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They break searching because of bugs in the reader.
And a lot of readers support automated hyphenation *IN WESTERN LATIN* but seriously get it wrong or do not support it at all in other languages. As such, readers *should* support soft hyphens so ePub in those languages will work right.
But even if they don't, the glyph then would be a zero-width glyph if their default fonts had U+00AD but it seems there isn't something like WGL4 was to Windows --- not even for western Latin glyphs --- that ePub authors can know the readers all support, so embedding their own fonts is the only way to know the glyphs they need are there.