Basic *.cton syntax mode for Vim.

misc/vim/ftdetect/cton.vim

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+au BufRead,BufNewFile *.cton set filetype=cton

misc/vim/syntax/cton.vim

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+" Vim syntax file
+" Language:     Cretonne
+" Maintainer:   Jakob Stoklund Olesen <stoklund@2pi.dk
+" Last Change:  Sep 22, 2016
+
+if version < 600
+  syntax clear
+elseif exists("b:current_syntax")
+  finish
+endif
+
+syn keyword ctonHeader test isa set
+syn keyword ctonDecl function stack_slot jump_table
+syn keyword ctonFilecheck check sameln nextln unordered not regex contained
+
+syn match ctonType  /\<[bif]\d\+\(x\d\+\)\?\>/
+syn match ctonEntity /\<\(v\|vx\|ss\|jt\|\)\d\+\>/
+syn match ctonLabel /\<ebb\d+\>/
+
+syn match ctonNumber /-\?\<\d\+\>/
+syn match ctonNumber /-\?\<0x\x\+\(\.\x*\)\(p[+-]\?\d\+\)\?\>/
+
+syn region ctonCommentLine start=";" end="$" contains=ctonFilecheck
+
+hi def link ctonHeader        Keyword
+hi def link ctonDecl          Keyword
+hi def link ctonType          Type
+hi def link ctonEntity        Identifier
+hi def link ctonLabel         Label
+hi def link ctonNumber        Number
+hi def link ctonCommentLine   Comment
+hi def link ctonFilecheck     SpecialComment
+
+let b:current_syntax = "cton"