Additional notes: * In my experience, the hyphen is usually very short in most fonts, the en dash is significantly longer, and the em dash can be much less tha

Additional notes: * In my experience, the hyphen is usually very short in most fonts, the en dash is significantly longer, and the em dash can be much less than double the en dash (some of this may be a result of poor font design though. Monospace fonts have it rough!). * It's widely recommended to avoid writing U+2010 and just use U+002D for hyphens. Hyphens are by far the most common of these punctuation symbols, so it's ludicrous that `man` pages to map them by default; most man pages will never want any kind of dash. * Soft hyphen support sucks. * For different reasons, it's rare to manually write U+2212, since you should generally tell your typesetting engine to switch to math mode (which also takes care of inserting the right obscure kinds of spaces). * En dash is also used as a higher-level hyphen, when the inputs are already compound (not necessarily with hyphens!). * En dash with spaces around it is an alternate style equivalent to em dash without spaces, for uses like a comma/colon/reverse-colon/parenthesis. A given work should only use one for consistency. In casually written text, space-asciidash-space is almost always intended as an en dash. * Em dash is also the thing to use for interruption; there are several subcases here. This is the only time an em dash can potentially touch a space, though except for self-interruption they're generally inside quotes so won't actually. * When there's a parenthetical interruption by the narrator, the em dash goes outside the quotes (“Foo”—bar—“baz”). * Em dashes are also used for attribution after a quote, or for signatures. This is supposed to always be the start of a line, but if you're sloppy I guess it might be preceded by a space here too. * U+2012 figure dash is probably the only other dash worth knowing; use it with digits. There's also a "figure space" you should use for monospace-like padding in a non-monospace font.