So that I could do a global change to every getURL matching my pattern in the Flash file. The find pattern does work, however for the life of me I can't discover how to use the captured piece in the replacement pattern. The usual suspects \0 $0 \1 $1 don't work. Is it possible to do? The syntax isn't explained in the documentation.
The documentation for the Regular Expressions checkbox says
Regular Expressions: Searches for text in regular expressions in ActionScript. An expression is any statement that Flash Pro can evaluate that returns a value.
That seems to say it's for searching withinregular expressions in Actionscript, not searching/replacing with regular expressions like in most text editors. However, using syntax like .*? only works if that checkbox is checked, so I think it is implemented, the replacement syntax is just undocumented.