Update runtime files
diff --git a/runtime/syntax/openscad.vim b/runtime/syntax/openscad.vim
new file mode 100644
index 0000000..1e20c74
--- /dev/null
+++ b/runtime/syntax/openscad.vim
@@ -0,0 +1,129 @@
+" Vim syntax file
+" Language: OpenSCAD
+" Maintainer: Niklas Adam <adam@oddodd.org>
+" Last change: 2022-04-15
+"
+"
+" From salkin-mada/openscad.nvim
+" Building on the work of Sirtaj Singh Kang and others for vim-openscad
+"
+
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+ finish
+endif
+
+syntax case ignore
+
+setlocal iskeyword=a-z,A-Z,48-57,_
+
+syn match openscadAoperator "{"
+syn match openscadAoperator "}"
+syn match openscadLi "\["
+syn match openscadLi "\]"
+syn match openscadPar "("
+syn match openscadPar ")"
+
+syn match openscadSpecialVariable "\$[a-zA-Z_]\+\>" display
+syn match openscadModifier "^\s*[\*\!\#\%]" display
+
+syn match openscadBinaryoperator "+"
+syn match openscadBinaryoperator "-"
+syn match openscadBinaryoperator "*"
+syn match openscadBinaryoperator "/"
+syn match openscadBinaryoperator "%"
+syn match openscadBinaryoperator "\*\*"
+syn match openscadBinaryoperator "<"
+syn match openscadBinaryoperator "<="
+syn match openscadBinaryoperator ">"
+syn match openscadBinaryoperator ">="
+syn match openscadBinaryoperator "="
+syn match openscadBinaryoperator "=="
+syn match openscadBinaryoperator "==="
+syn match openscadBinaryoperator "!="
+syn match openscadBinaryoperator "!=="
+syn match openscadBinaryoperator "&"
+syn match openscadBinaryoperator "|"
+syn match openscadBinaryoperator "<!"
+syn match openscadBinaryoperator "?"
+syn match openscadBinaryoperator "??"
+syn match openscadBinaryoperator "!?"
+syn match openscadBinaryoperator "!"
+syn match openscadBinaryoperator "#"
+syn match openscadBinaryoperator "_"
+syn match openscadBinaryoperator "\.\."
+syn match openscadBinaryoperator "\.\.\."
+syn match openscadBinaryoperator "`"
+syn match openscadBinaryoperator ":"
+
+syn keyword openscadFunctionDef function nextgroup=openscadFunction skipwhite skipempty
+syn match openscadFunction /\<\h\w*\>/ contained display
+
+syn keyword openscadModuleDef module nextgroup=openscadModule skipwhite skipempty
+syn match openscadModule /\<\h\w*\>/ contained display
+
+syn keyword openscadStatement echo assign let assert
+syn keyword openscadConditional if else
+syn keyword openscadRepeat for intersection_for
+syn keyword openscadInclude include use
+syn keyword openscadCsgKeyword union difference intersection render intersection_for
+syn keyword openscadTransform scale rotate translate resize mirror multmatrix color minkowski hull projection linear_extrude rotate_extrude offset
+syn keyword openscadPrimitiveSolid cube sphere cylinder polyhedron surface
+syn keyword openscadPrimitive2D square circle polygon import_dxf text
+syn keyword openscadPrimitiveImport import child children
+
+syn match openscadNumbers "\<\d\|\.\d" contains=openscadNumber display transparent
+syn match openscadNumber "\d\+" display contained
+syn match openscadNumber "\.\d\+" display contained
+
+syn region openscadString start=/"/ skip=/\\"/ end=/"/
+
+syn keyword openscadBoolean true false
+
+syn keyword openscadCommentTodo TODO FIXME XXX NOTE contained display
+syn match openscadInlineComment ://.*$: contains=openscadCommentTodo
+syn region openscadBlockComment start=:/\*: end=:\*/: fold contains=openscadCommentTodo
+
+syn region openscadBlock start="{" end="}" transparent fold
+syn region openscadVector start="\[" end="\]" transparent fold
+
+syn keyword openscadBuiltin abs acos asin atan atan2 ceil cos exp floor ln log
+syn keyword openscadBuiltin lookup max min pow rands round sign sin sqrt tan
+syn keyword openscadBuiltin str len search version version_num concat chr ord cross norm
+syn keyword openscadBuiltin parent_module
+syn keyword openscadBuiltin dxf_cross dxf_dim
+syn keyword openscadBuiltinSpecial PI undef
+
+"""""""""""""""""""""""""""""""""""""""""
+" linkage
+"""""""""""""""""""""""""""""""""""""""""
+hi def link openscadFunctionDef Structure
+hi def link openscadAoperator Function
+hi def link openscadLi Function
+" hi def link openscadPar Structure
+hi def link openscadBuiltinSpecial Special
+hi def link openscadBinaryoperator Special
+hi def link openscadFunction Function
+hi def link openscadModuleDef Structure
+hi def link openscadModule Function
+hi def link openscadBlockComment Comment
+hi def link openscadBoolean Boolean
+hi def link openscadBuiltin Function
+hi def link openscadConditional Conditional
+hi def link openscadCsgKeyword Structure
+hi def link openscadInclude Include
+hi def link openscadInlineComment Comment
+hi def link openscadModifier Special
+hi def link openscadStatement Statement
+hi def link openscadNumbers Number
+hi def link openscadNumber Number
+hi def link openscadPrimitiveSolid Keyword
+hi def link openscadPrimitive2D Keyword
+hi def link openscadPrimitiveImport Keyword
+hi def link openscadRepeat Repeat
+hi def link openscadSpecialVariable Special
+hi def link openscadString String
+hi def link openscadTransform Statement
+hi def link openscadCommentTodo Todo
+
+let b:current_syntax = 'openscad'