[#22] Support multiple recipe attributes on a single line.

Author: nk9

Syntax/Just.sublime-syntax

@@ -128,7 +128,7 @@ contexts:
     - include: aliases
     - include: comments
     - include: assignment
-    - include: recipe-attribute
+    - include: recipe-attributes
     - include: recipe-definition
     - include: recipe-generic-line
 
@@ -380,9 +380,32 @@ contexts:
 ###[ RECIPE DEFINITION ]#######################################################
 # Recipe definition lines, including attributes, arguments and dependencies
 
-  recipe-attribute:
-    - match: ^\[\s*({{recipe_attributes}})\s*\]\s*$ # Only one attribute allowed per line
+  recipe-attributes:
+    - match: ^\[
       scope: meta.annotation.just variable.annotation.just
+      push:
+        - recipe-attributes-body
+        - expect-recipe-attribute-name
+    - include: eol-pop
+
+  recipe-attributes-body:
+    - meta_scope: meta.sequence.list.just meta.annotation.just
+    - match: \]
+      scope: variable.annotation.just
+      pop: 1
+    - match: ','
+      scope: punctuation.separator.parameters.just
+      push: expect-recipe-attribute-name
+    - include: eol-pop
+
+  expect-recipe-attribute-name:
+    - match: ({{recipe_attributes}})
+      scope: variable.annotation.just
+      pop: 1
+    - match: \]
+      scope: invalid.illegal.just
+      pop: 2
+    - include: else-pop
 
   recipe-definition:
     - match: (?=^@?{{valid_name}}(?![^:]*:=)) # Matches '^recipeName' but not '^varName :='

Syntax/tests/syntax_test_just.recipe_declaration.just

@@ -205,17 +205,40 @@ attr-test:
 linux-attr:
 
 [  macos  ]
-#^^^^^^^^^^ meta.annotation.just variable.annotation.just
+#^^^^^^^^^^ meta.sequence.list.just meta.annotation.just
 macos-attr:
 
 [unix   ]
-#^^^^^^^^ meta.annotation.just variable.annotation.just
+#^^^^^^^^ meta.sequence.list.just meta.annotation.just
 unix-attr:
 
 [  windows]
-#^^^^^^^^^^ meta.annotation.just variable.annotation.just
+#^^^^^^^^^ meta.sequence.list.just meta.annotation.just
 windows-attr:
 
+[ windows, macos, linux]
+#^^^^^^^^^^^^^^^^^^^^^^^ meta.sequence.list.just meta.annotation.just
+# ^^^^^^^ variable.annotation.just
+#        ^ punctuation.separator.parameters.just
+#          ^^^^^ variable.annotation.just
+#               ^ punctuation.separator.parameters.just
+#                 ^^^^^ variable.annotation.just
+attr-multi-valid:
+
+[windows linux]
+#^^^^^^^^^^^^^^ meta.sequence.list.just meta.annotation.just
+#^^^^^^^ variable.annotation.just
+#        ^^^^^ - variable.annotation.just
+attr-multi-invalid-1:
+
+[macos, ]
+#       ^ invalid.illegal.just
+attr-multi-invalid-2:
+
+[nonexistant-attribute]
+#<- meta.sequence.list.just meta.annotation.just meta.annotation.just variable.annotation.just
+#^^^^^^^^^^^^^^^^^^^^^ meta.sequence.list.just meta.annotation.just - variable.annotation.just
+attr-invalid:
 
 test-image $PRODUCT $VERSION +IMAGES:
 #                            ^ meta.function.parameters.just keyword.operator.variadic.just