--- /dev/null
+" Copyright 2009 The Go Authors. All rights reserved.
+" Use of this source code is governed by a BSD-style
+" license that can be found in the LICENSE file.
+"
+" go.vim: Vim syntax file for Go.
+"
+" Options:
+" There are some options for customizing the highlighting; the recommended
+" settings are the default values, but you can write:
+" let OPTION_NAME = 0
+" in your ~/.vimrc file to disable particular options. You can also write:
+" let OPTION_NAME = 1
+" to enable particular options. At present, all options default to on.
+"
+" - go_highlight_array_whitespace_error
+" Highlights white space after "[]".
+" - go_highlight_chan_whitespace_error
+" Highlights white space around the communications operator that don't follow
+" the standard style.
+" - go_highlight_extra_types
+" Highlights commonly used library types (os.Error, etc.).
+" - go_highlight_space_tab_error
+" Highlights instances of tabs following spaces.
+" - go_highlight_trailing_whitespace_error
+" Highlights trailing white space.
+
+" Quit when a (custom) syntax file was already loaded
+if exists("b:current_syntax")
+ finish
+endif
+
+if !exists("go_highlight_array_whitespace_error")
+ let go_highlight_array_whitespace_error = 1
+endif
+if !exists("go_highlight_chan_whitespace_error")
+ let go_highlight_chan_whitespace_error = 1
+endif
+if !exists("go_highlight_extra_types")
+ let go_highlight_extra_types = 1
+endif
+if !exists("go_highlight_space_tab_error")
+ let go_highlight_space_tab_error = 1
+endif
+if !exists("go_highlight_trailing_whitespace_error")
+ let go_highlight_trailing_whitespace_error = 1
+endif
+
+syn case match
+
+syn keyword goDirective package import
+syn keyword goDeclaration var const type
+syn keyword goDeclType struct interface
+
+hi def link goDirective Statement
+hi def link goDeclaration Keyword
+hi def link goDeclType Keyword
+
+" Keywords within functions
+syn keyword goStatement defer go goto return break continue fallthrough
+syn keyword goConditional if else switch select
+syn keyword goLabel case default
+syn keyword goRepeat for range
+
+hi def link goStatement Statement
+hi def link goConditional Conditional
+hi def link goLabel Label
+hi def link goRepeat Repeat
+
+" Predefined types
+syn keyword goType chan map bool string
+syn keyword goSignedInts int int8 int16 int32 int64
+syn keyword goUnsignedInts byte uint uint8 uint16 uint32 uint64 uintptr
+syn keyword goFloats float float32 float64
+
+hi def link goType Type
+hi def link goSignedInts Type
+hi def link goUnsignedInts Type
+hi def link goFloats Type
+
+" Treat func specially: it's a declaration at the start of a line, but a type
+" elsewhere. Order matters here.
+syn match goType /\<func\>/
+syn match goDeclaration /^func\>/
+
+" Predefined functions and values
+syn keyword goBuiltins cap close closed convert len make new panic panicln print println
+syn keyword goConstants iota true false nil
+
+hi def link goBuiltins Keyword
+hi def link goConstants Keyword
+
+" Comments; their contents
+syn keyword goTodo contained TODO FIXME XXX BUG
+syn cluster goCommentGroup contains=goTodo
+syn region goComment start="/\*" end="\*/" contains=@goCommentGroup
+syn region goComment start="//" end="$" contains=@goCommentGroup
+
+hi def link goComment Comment
+hi def link goTodo Todo
+
+" Go escapes
+syn match goEscapeOctal display contained "\\[0-7]\{3}"
+syn match goEscapeC display contained +\\[abfnrtv\\'"]+
+syn match goEscapeX display contained "\\x\x\{2}"
+syn match goEscapeU display contained "\\u\x\{4}"
+syn match goEscapeBigU display contained "\\U\x\{8}"
+syn match goEscapeError display contained +\\[^0-7xuUabfnrtv\\'"]+
+
+hi def link goEscapeOctal goSpecialString
+hi def link goEscapeC goSpecialString
+hi def link goEscapeX goSpecialString
+hi def link goEscapeU goSpecialString
+hi def link goEscapeBigU goSpecialString
+hi def link goSpecialString Special
+hi def link goEscapeError Error
+
+" Strings and their contents
+syn cluster goStringGroup contains=goEscapeOctal,goEscapeC,goEscapeX,goEscapeU,goEscapeBigU,goEscapeError
+syn region goString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=@goStringGroup
+syn region goRawString start=+`+ end=+`+
+
+hi def link goString String
+hi def link goRawString String
+
+" Characters; their contents
+syn cluster goCharacterGroup contains=goEscapeOctal,goEscapeC,goEscapeX,goEscapeU,goEscapeBigU
+syn region goCharacter start=+'+ skip=+\\\\\|\\'+ end=+'+ contains=@goCharacterGroup
+
+hi def link goCharacter Character
+
+" Regions
+syn region goBlock start="{" end="}" transparent fold
+syn region goParen start='(' end=')' transparent
+
+" Integers
+syn match goDecimalInt "\<\d\+\>"
+syn match goHexadecimalInt "\<0x\x\+\>"
+syn match goOctalInt "\<0\o\+\>"
+syn match goOctalError "\<0\o*[89]\d*\>"
+
+hi def link goDecimalInt Integer
+hi def link goHexadecimalInt Integer
+hi def link goOctalInt Integer
+hi def link Integer Number
+
+" Floating point
+syn match goFloat "\<\d\+\.\d*\([Ee][-+]\d\+\)\?\>"
+syn match goFloat "\<\.\d\+\([Ee][-+]\d\+\)\?\>"
+syn match goFloat "\<\d\+[Ee][-+]\d\+"
+
+hi def link goFloat Float
+
+" Spaces after "[]"
+if go_highlight_array_whitespace_error != 0
+ syn match goSpaceError display "\(\[\]\)\@<=\s\+"
+endif
+
+" Spacing errors around the 'chan' keyword
+if go_highlight_chan_whitespace_error != 0
+ " receive-only annotation on chan type
+ syn match goSpaceError display "\(<-\)\@<=\s\+\(chan\>\)\@="
+ " send-only annotation on chan type
+ syn match goSpaceError display "\(\<chan\)\@<=\s\+\(<-\)\@="
+ " value-ignoring receives in a few contexts
+ syn match goSpaceError display "\(\(^\|[={(,;]\)\s*<-\)\@<=\s\+"
+endif
+
+" Extra types commonly seen
+if go_highlight_extra_types != 0
+ syn match goExtraType /\<bytes\.\(Buffer\)\>/
+ syn match goExtraType /\<io\.\(Reader\|Writer\|ReadWriter\|ReadWriteCloser\)\>/
+ syn match goExtraType /\<\(os\.Error\)\>/
+ syn match goExtraType /\<reflect\.\w*\(Type\|Value\)\>/
+ syn match goExtraType /\<unsafe\.Pointer\>/
+endif
+
+" Space-tab error
+if go_highlight_space_tab_error != 0
+ syn match goSpaceError display " \+\t"me=e-1
+endif
+
+" Trailing white space error
+if go_highlight_trailing_whitespace_error != 0
+ syn match goSpaceError display excludenl "\s\+$"
+endif
+
+hi def link goExtraType Type
+hi def link goSpaceError Error
+
+let b:current_syntax = "go"