Lua: highlight function name

CONTRIBUTING.md

@@ -124,6 +124,7 @@ are optional and will not have any effect for now.
 @label for C/Lua-like labels
 @operator
 @keyword
+  function
 @exception
 @include keywords for including modules (e.g. import/from in Python)
 

doc/nvim-treesitter.txt

@@ -388,6 +388,10 @@ For any operator: `+`, but also `->` and `*` in C.
 								*hl-TSKeyword*
 For keywords that don't fall in previous categories.
 
+`TSKeywordFunction`
+                                                        *hl-TSKeywordFunction*
+For keywords used to define a fuction.
+
 `TSException`
 							      *hl-TSException*
 For exception related keywords.

lua/nvim-treesitter/highlight.lua

@@ -46,6 +46,7 @@ hlmap["repeat"] = "TSRepeat"
 hlmap["label"] = "TSLabel"
 hlmap["operator"] = "TSOperator"
 hlmap["keyword"] = "TSKeyword"
+hlmap["keyword.function"] = "TSKeywordFunction"
 hlmap["exception"] = "TSException"
 
 hlmap["type"] = "TSType"

plugin/nvim-treesitter.vim

@@ -54,6 +54,7 @@ highlight default link TSRepeat Repeat
 highlight default link TSLabel Label
 highlight default link TSOperator Operator
 highlight default link TSKeyword Keyword
+highlight default link TSKeywordFunction Keyword
 highlight default link TSException Exception
 
 highlight default link TSType Type

queries/lua/highlights.scm

@@ -25,11 +25,11 @@
 )
 
 [
-"in"
-"local"
-"return"
-(break_statement)
-"goto"
+ "in"
+ "local"
+ "return"
+ (break_statement)
+ "goto"
 ] @keyword
 
 ;; Operators
@@ -77,9 +77,12 @@
 (nil) @constant.builtin
 (spread) @constant ;; "..."
 
-;; Nodes
-("function" @function "end" @function) ;; Any node that has both funtion and end in it
+;; Functions
+("function" @keyword.function
+ [(function_name) (identifier)] @function
+ "end" @keyword.function)
 
+;; Nodes
 (table ["{" "}"] @constructor)
 (comment) @comment
 (string) @string