Thanks for letting me know. I assumed that macros may contain interactive content but can see that this is not possible.

So, if we discard the interactive element, can we simply create a macro that finds the spaces mentioned in my post? That is:

- numbers following a space: [0‐9]*
- Equal sign and space: =*
- Space and equal sign: *=
- Bracket followed by space: [0‐9]\)

Once the macro finds any of these spaces, I will substitute them with non-breaking spaces, if I consider that they are applicable.