Combining characters are not always shown correctly

[bramstein]

Try wrapping them in zero width non joiner:

http://en.wikipedia.org/wiki/Zero-width_non-joiner

This made them show up in most cases.

[bramstein]

Seems wikipedia uses a non-breaking space before the combining character. They also seem to use DOTTED CIRCLE to show combining characters.

[Munter]

Mathias Bynens also has a project that might help with correct display of chars: https://github.com/mathiasbynens/unicode-data

[msiebuhr]

Shows DOTTED CIRCLE in front of all chars that has "COMBINING" in the name per 5d970f8.