BleachBit 1.2 supports only some of those currently used in winapp2.ini. The currently supported variables are those that already defined by Windows (such as TMP).
BleachBit 1.4 fully supports ProgramFiles and CommonProgramFiles
Others below (but not all below) need to be supported
$ grep -Po '%[\w\d]*\%' /tmp/Winapp2.ini | sort -f | uniq -ci
3 %AllUsersProfile%
1235 %appdata% **
592 %CommonAppData%
21 %CommonProgramFiles%
312 %Documents%
4 %HomeDrive% **
2692 %localappdata% **
37 %LocalLowAppData%
4 %Music%
14 %Pictures%
1113 %ProgramFiles% **
14 %Public% **
1 %RootDir%
196 %SystemDrive% **
1 %SystemRoot% **
3 %temp% **
1 %user%
149 %UserProfile% **
2 %Video%
237 %WinDir% **
**Already set by Windows: AppData, HomeDrive, localappdata, ProgramFiles, Public, SystemDrive, SystemRoot, Temp, UserProfile, WinDir
Commit c722ca7 adds commonappdata, localappdata, music, pictures, video for BleachBit 1.7