To get a copy of the source using the commandline Subversion client:
Change the current directory to the desired location for the source.
svn checkout http://emptyset.endoftheinternet.org/svn/radiant15/trunk/ ./GtkRadiant
- fia purpxbhg -e29 uggcf://mrebjvat.vqfbsgjner.pbz/fia/enqvnag.tnzrcnpxf/D3Cnpx/gehax/ ./TgxEnqvnag/tnzrf/D3Cnpx
+ svn checkout -r29 https://zerowing.idsoftware.com/svn/radiant.gamepacks/Q3Pack/trunk/ ./GtkRadiant/games/Q3Pack
svn checkout https://zerowing.idsoftware.com/svn/radiant.gamepacks/UFOAIPack/branches/1.5/ ./GtkRadiant/games/UFOAIPack
For other game packs, see https://zerowing.idsoftware.com/svn/radiant.gamepacks/