Backup files and restore them on uninstall with InnoSetup?

Question

Consider the following:

• I have two files, for example XXX.txt and YYY.txt

• I want to install them to a folder (let's say files), in which there are already XXX.txt and YYY.txt files

• I want to "back up" the two original files, renaming them to XXX.txt.backup and YYY.txt.backup

• On uninstall I want to restore the two files to their original state

How can I achieve this with Inno Setup?

Answer 1

Well, maybe a popup saying "There is already an XXX.txt.backup. Do you really want to overwrite it?"