Wildcards fail in very basic operations.
Nonworking examples:
- In text mode, (a) -> [a]
Result:
- In math mode, (a,b)->[a,b]
Result:
Working examples
- In math mode, (a) -> [a]
- In math mode \sqrt{a} -> \sqrt{b}
- In math mode \frac{a}{b} -> \frac{c}{d}