SciTE
SciTE is a SCIntilla based Text Editor. Originally built to demonstrate Scintilla, it has grown to be a generally useful editor with facilities for building and running programs. It is best used for jobs with simple configurations - I use it for building test and demonstration programs as well as SciTE and Scintilla, themselves.
Editing lua+löve file on windows
You can use SciTE to edit your löve code by modifying the last lines in your lua.properties like this :
# compatible with LuaBinaries for Lua 5.1; will work on both platforms.
##command.compile.*.lua=luac5.1 -o "$(FileName).luc" "$(FileNameExt)"
# Lua 5.1
##command.go.*.lua=lua5.1 "$(FileNameExt)"
# Lua 4.0
##command.go.*.lua=Lua-4.0.exe -c -f "$(FileNameExt)"
command.go.*.lua="C:\your path to\LOVE\love.exe" "$(FileDir)"
Simply make sure to edit the path to your love.exe and comment the others "command.go"