How to convert Path to 8.3 format with Inno Setup

Question

I need to get 8.3 formatted path (in this case {app}) for registry entry.

Unfortunately this specific Delphi function does not work in Inno Setup

function ExtractShortPathName(const S: FullFileName): string;

Answer 1

Use the GetShortName function. From the reference:

Returns the short version of the specified long filename. If the short version of the long filename is not found, the long filename is returned.