Update

1 files changed, 35 insertions, 10 deletions

diff --git a/syntax/go.vim b/syntax/go.vim
index 19763ee0..23270e84 100644
--- a/syntax/go.vim
+++ b/syntax/go.vim
@@ -170,13 +170,13 @@ syn match       goSingleDecl        /\%(import\|var\|const\) [^(]\@=/ contains=g
 
 " Integers
 syn match       goDecimalInt        "\<-\=\(0\|[1-9]_\?\(\d\|\d\+_\?\d\+\)*\)\%([Ee][-+]\=\d\+\)\=\>"
-syn match       goDecimalError      "\<-\=\(_\(\d\+_*\)\+\|\([1-9]\d*_*\)\+__\(\d\+_*\)\+\|\([1-9]\d*_*\)\+_\+\)\%([Ee][-+]\=\d\+\)\=\>"
+"syn match       goDecimalError      "\<-\=\(_\(\d\+_*\)\+\|\([1-9]\d*_*\)\+__\(\d\+_*\)\+\|\([1-9]\d*_*\)\+_\+\)\%([Ee][-+]\=\d\+\)\=\>"
 syn match       goHexadecimalInt    "\<-\=0[xX]_\?\(\x\+_\?\)\+\>"
-syn match       goHexadecimalError  "\<-\=0[xX]_\?\(\x\+_\?\)*\(\([^ \t0-9A-Fa-f_)]\|__\)\S*\|_\)\>"
+"syn match       goHexadecimalError  "\<-\=0[xX]_\?\(\x\+_\?\)*\(\([^-+%&|^*/ \t0-9A-Fa-f_)]\|__\)\S*\|_\)\>"
 syn match       goOctalInt          "\<-\=0[oO]\?_\?\(\o\+_\?\)\+\>"
-syn match       goOctalError        "\<-\=0[0-7oO_]*\(\([^ \t0-7oOxX_/)\]\}\:;]\|[oO]\{2,\}\|__\)\S*\|_\|[oOxX]\)\>"
+"syn match       goOctalError        "\<-\=0[0-7oO_]*\(\([^-+%&|^*/ \t0-7oOxX_/)\]\}\:;]\|[oO]\{2,\}\|__\)\S*\|_\|[oOxX]\)\>"
 syn match       goBinaryInt         "\<-\=0[bB]_\?\([01]\+_\?\)\+\>"
-syn match       goBinaryError       "\<-\=0[bB]_\?[01_]*\([^ \t01_)]\S*\|__\S*\|_\)\>"
+"syn match       goBinaryError       "\<-\=0[bB]_\?[01_]*\([^-+%&|^*/ \t01_)]\S*\|__\S*\|_\)\>"
 
 hi def link     goDecimalInt        Integer
 hi def link     goDecimalError      Error
@@ -270,6 +270,8 @@ if go#config#HighlightOperators()
   syn match goOperator /\%(<<\|>>\|&^\)=\?/
   " match remaining two-char operators: := && || <- ++ --
   syn match goOperator /:=\|||\|<-\|++\|--/
+  " match ~
+  syn match goOperator /\~/
   " match ...
 
   hi def link     goPointerOperator   goOperator
@@ -277,14 +279,37 @@ if go#config#HighlightOperators()
 endif
 hi def link     goOperator          Operator
 
+"                               -> type constraint opening bracket
+"                               |-> start non-counting group
+"                               ||  -> any word character
+"                               ||  |  -> at least one, as many as possible
+"                               ||  |  |    -> start non-counting group
+"                               ||  |  |    |   -> match ~
+"                               ||  |  |    |   | -> at most once
+"                               ||  |  |    |   | |     -> allow a slice type
+"                               ||  |  |    |   | |     |      -> any word character
+"                               ||  |  |    |   | |     |      | -> start a non-counting group
+"                               ||  |  |    |   | |     |      | | -> that matches word characters and |
+"                               ||  |  |    |   | |     |      | | |     -> close the non-counting group
+"                               ||  |  |    |   | |     |      | | |     | -> close the non-counting group
+"                               ||  |  |    |   | |     |      | | |     | |-> any number of matches
+"                               ||  |  |    |   | |     |      | | |     | || -> start a non-counting group
+"                               ||  |  |    |   | |     |      | | |     | || | -> a comma and whitespace
+"                               ||  |  |    |   | |     |      | | |     | || | |      -> at most once
+"                               ||  |  |    |   | |     |      | | |     | || | |      | -> close the non-counting group
+"                               ||  |  |    |   | |     |      | | |     | || | |      | | -> at least one of those non-counting groups, as many as possible
+"                               ||  |  |    |   | | --------   | | |     | || | |      | | | -> type constraint closing bracket
+"                               ||  |  |    |   | ||        |  | | |     | || | |      | | | |
+syn match goTypeParams        /\[\%(\w\+\s\+\%(\~\?\%(\[]\)\?\w\%(\w\||\)\)*\%(,\s*\)\?\)\+\]/ nextgroup=goSimpleParams,goDeclType contained
+
 " Functions;
 if go#config#HighlightFunctions() || go#config#HighlightFunctionParameters()
   syn match goDeclaration       /\<func\>/ nextgroup=goReceiver,goFunction,goSimpleParams skipwhite skipnl
-  syn match goReceiverDecl      /(\s*\zs\%(\%(\w\+\s\+\)\?\*\?\w\+\)\ze\s*)/ contained contains=goReceiverVar,goReceiverType,goPointerOperator
+  syn match goReceiverDecl      /(\s*\zs\%(\%(\w\+\s\+\)\?\*\?\w\+\%(\[\%(\%(\[\]\)\?\w\+\%(,\s*\)\?\)\+\]\)\?\)\ze\s*)/ contained contains=goReceiverVar,goReceiverType,goPointerOperator
   syn match goReceiverVar       /\w\+\ze\s\+\%(\w\|\*\)/ nextgroup=goPointerOperator,goReceiverType skipwhite skipnl contained
   syn match goPointerOperator   /\*/ nextgroup=goReceiverType contained skipwhite skipnl
-  syn match goFunction          /\w\+/ nextgroup=goSimpleParams contained skipwhite skipnl
-  syn match goReceiverType      /\w\+\ze\s*)/ contained
+  syn match goFunction          /\w\+/ nextgroup=goSimpleParams,goTypeParams contained skipwhite skipnl
+  syn match goReceiverType      /\w\+\%(\[\%(\%(\[\]\)\?\w\+\%(,\s*\)\?\)\+\]\)\?\ze\s*)/ contained
   if go#config#HighlightFunctionParameters()
     syn match goSimpleParams      /(\%(\w\|\_s\|[*\.\[\],\{\}<>-]\)*)/ contained contains=goParamName,goType nextgroup=goFunctionReturn skipwhite skipnl
     syn match goFunctionReturn   /(\%(\w\|\_s\|[*\.\[\],\{\}<>-]\)*)/ contained contains=goParamName,goType skipwhite skipnl
@@ -294,7 +319,7 @@ if go#config#HighlightFunctions() || go#config#HighlightFunctionParameters()
     hi def link   goReceiverVar    goParamName
     hi def link   goParamName      Identifier
   endif
-  syn match goReceiver          /(\s*\%(\w\+\s\+\)\?\*\?\s*\w\+\s*)\ze\s*\w/ contained nextgroup=goFunction contains=goReceiverDecl skipwhite skipnl
+  syn match goReceiver          /(\s*\%(\w\+\s\+\)\?\*\?\s*\w\+\%(\[\%(\%(\[\]\)\?\w\+\%(,\s*\)\?\)\+\]\)\?\s*)\ze\s*\w/ contained nextgroup=goFunction contains=goReceiverDecl skipwhite skipnl
 else
   syn keyword goDeclaration func
 endif
@@ -302,7 +327,7 @@ hi def link     goFunction          Function
 
 " Function calls;
 if go#config#HighlightFunctionCalls()
-  syn match goFunctionCall      /\w\+\ze(/ contains=goBuiltins,goDeclaration
+  syn match goFunctionCall      /\w\+\ze\%(\[\%(\%(\[]\)\?\w\+\(,\s*\)\?\)\+\]\)\?(/ contains=goBuiltins,goDeclaration
 endif
 hi def link     goFunctionCall      Type
 
@@ -329,7 +354,7 @@ hi def link    goField              Identifier
 if go#config#HighlightTypes()
   syn match goTypeConstructor      /\<\w\+{\@=/
   syn match goTypeDecl             /\<type\>/ nextgroup=goTypeName skipwhite skipnl
-  syn match goTypeName             /\w\+/ contained nextgroup=goDeclType skipwhite skipnl
+  syn match goTypeName             /\w\+/ contained nextgroup=goDeclType,goTypeParams skipwhite skipnl
   syn match goDeclType             /\<\%(interface\|struct\)\>/ skipwhite skipnl
   hi def link     goReceiverType      Type
 else