change [ON]FILE default color
support combined string by removing non-spacing mark to caliculate width
Merge branch 'master' into color
change to use [ON]MARK value for empty UMARK
Change to support combined characters.
Thai language requires one-by-one char process.
optimization
bug fix and optimization
better mbwidth implementation
update tab expansion
inherit --no256 option to cdif
Remove File::Glob and perform Linux compatibility.