V8 is Google's open source JavaScript engine. Requirements: linux or windows. Vim executable file with some exported symbol that if_v8 requires. On linux: Compile with gcc's -rdynamic option. On windows (msvc): Use vim_export.def and add linker flag "/DEF:vim_export.def". nmake -f Make_mvc.mak linkdebug=/DEF:vim_export.def Usage: :source /path/to/if_v8/init.vim :V8 print('hello, world') => hello,