" Operators
syn match kplOperator "[~!$%&*\-+=|:'<,>\./]\|`[a-z]\w*" contains=@NoSpell
hi def link kplOperator Operator

" Comments
syn match kplTodo contained "\<TODO\>" contains=@NoSpell
syn match kplCommentLine "\/\/.*$" contains=kplTodo
syn region kplCommentRange start="/\*" end="\*/" contains=kplTodo
hi def link kplTodo TODO
hi def link kplCommentLine Comment
hi def link kplCommentRange Comment

" Semicolon
syn match kplSemicolon ";"
hi def link kplSemicolon Comment

" Number
syn match kplNumber "\d\+\%(\.\d\+\)\?"
hi def link kplNumber Number

" String
syn region kplString start=/"/ skip=/\\\\"/ end=/"/
hi def link kplString String

" Var
syn match kplVar "[a-z]\w*" contains=@NoSpell
hi def link kplVar Ignore

" Ignore
syn match kplIgnore "\<_\w*" contains=@NoSpell
hi def link kplIgnore Comment

" Symbol
syn match kplSymbol "\.\w\+" contains=@NoSpell
hi def link kplSymbol Identifier

" Type
syn match kplType "[A-Z]\w*" contains=@NoSpell
hi def link kplType Type

" Qualifiers
syn match kplQualifiers "Const\|Empty\|Lock\|Ref" contains=@NoSpell
hi def link kplQualifiers Repeat

" Define
syn match kplDefine "\[\|\]"
hi def link kplDefine Define

" List
syn match kplList "[()]"
hi def link kplList Special

" Action
syn match kplAction "[?@#^{}]"
hi def link kplAction Function