File type detection and basic syntax highlighting

README.md

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+# vim-spicy
+
+Syntax highlighting for BinPAC++/Spicy grammar files (pac2).
+See http://www.icir.org/hilti/ for details.
+
+Currently, the syntax highlighting is very basic.
+
+## Installation
+
+Install like any other Vim plugin, for example using vim-plug.
+
+## License
+
+Distributed under the same terms as Vim itself, see <code>:help license</code>.

ftdetect/spicy.vim

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+au BufRead,BufNewFile *.pac2 setfiletype spicy

ftplugin/spicy.vim

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+setlocal commentstring=#\ %s
+setlocal tabstop=2
+setlocal softtabstop=2
+setlocal shiftwidth=2

syntax/spicy.vim

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+syn keyword spicyTodo contained TODO XXX FIXME NOTE BUG
+syn region spicyComment start="#" end="$"
+syn keyword spicyImport module import
+syn keyword spicyKeyword
+	\ type
+	\ export
+	\ if
+	\ switch
+	\ on
+	\ var
+syn keyword spicyStatement print
+syn keyword spicyType
+	\ addr
+	\ bitfield
+	\ bool
+	\ bytes
+	\ double
+	\ enum
+	\ function
+	\ int
+	\ uint8
+	\ uint16
+	\ uint32
+	\ uint64
+	\ interval
+	\ iterator
+	\ list
+	\ map
+	\ set
+	\ sink
+	\ time
+	\ tuple
+	\ unit
+	\ vector
+syn keyword spicyBoolean True False
+syn match spicyHexadecimalInt "\<0x\x\+\>"
+
+" Set highlights
+hi def link spicyTodo Todo
+hi def link spicyComment Comment
+hi def link spicyImport Include
+hi def link spicyKeyword Keyword
+hi def link spicyType Type
+hi def link spicyStatement Statement
+hi def link spicyBoolean Boolean
+hi def link spicyHexadecimalInt Number