It would be great if I could apply the same "Variable Substring Extraction" functions that I can apply to variables also to code replacements.
Use case
I have a code replacement "on day one" allowing me to write my captions as ".. on $do$ of .." (with $ being my delimiter character) being rewritten to ".. on day one of ..". In the headline I would write "... - DAY ONE". Now it would be great if I could insert something like $do:UC$.
Implementation
I don't know what the best syntax would be to apply "Variable Substring Extraction" functions to code replacements.
