Skylark documentation: Mention implicit attributes.

--
MOS_MIGRATED_REVID=92937527

2 files changed, 7 insertions, 1 deletions

diff --git a/site/docs/skylark/cookbook.md b/site/docs/skylark/cookbook.md
index d6ccb7d4ab..1ab6bb51cc 100644
--- a/site/docs/skylark/cookbook.md
+++ b/site/docs/skylark/cookbook.md
@@ -91,7 +91,7 @@ Example of a rule that shows how to declare attributes and access them.
 ```python
 def _impl(ctx):
   # You may use print for debugging.
-  print("The number is %s" % ctx.attr.number)
+  print("Rule name = %s, package = %s" % (ctx.label.name, ctx.label.package))
 
   # This prints the labels of the deps attribute.
   print("There are %d deps" % len(ctx.attr.deps))
diff --git a/site/docs/skylark/rules.md b/site/docs/skylark/rules.md
index 47abb015a0..8339735842 100644
--- a/site/docs/skylark/rules.md
+++ b/site/docs/skylark/rules.md
@@ -29,6 +29,12 @@ If an attribute starts with `_`, it is private and users cannot set it. It
 is useful in particular for label attributes (your rule will have an
 implicit dependency on this label).
 
+The following attributes are implicitely added to every rule: `name`,
+`visibility`, `deprecation`, `tags`, `testonly`, `features`.
+
+To access an attribute, use `ctx.attr.<attribute_name>`. The name and the
+package of a rule are available with `ctx.label.name` and `ctx.label.package`.
+
 [See example.](cookbook.md#attr)
 
 The rule implementation function