I'd like to make an
\interrobang macro for my personal package of useful macros that prints the character
‽ (otherwise known as interrobang). However, some fonts don't have this character, and in that case I'd like to silently fall back to printing simply
!?. Is there a way to do this?
What I get when I type the Unicode character in a macro and then use the macro in the document when the character is not available is:
! Undefined control sequence. \u-default-8253 #1->\textinterrobang