support experimental lightweight function syntax

queries/perga/highlights.scm

@@ -13,7 +13,7 @@
 (comment) @comment
 ;(block_comment) @comment
 
-[ "(" ")" ] @punctuation.bracket
+[ "(" ")" "[" "]" ] @punctuation.bracket
 
 (definition
   name: (identifier) @function)
@@ -30,6 +30,12 @@
 (param_block
   type: (expr) @type)
 
+(labs_alt
+  type: (expr) @type)
+
+(labs_alt
+  param: (identifier)+ @variable.parameter)
+
 (variable_binding
   type: (expr) @type)
 

queries/perga/rainbow-delimiters.scm

@@ -17,3 +17,7 @@
 (variable_binding
   "(" @delimiter
   ")" @delimiter @sentinel) @container
+
+(labs_alt
+  "[" @delimiter
+  "]" @delimiter @sentinel) @container