Add binary literals (#4680)

docs/commands/complete.md

@@ -0,0 +1,18 @@
+---
+title: complete
+layout: command
+version: 0.59.0
+---
+
+Complete the external piped in, collecting outputs and exit code
+
+## Signature
+
+```> complete ```
+
+## Examples
+
+Run the external completion
+```shell
+> ^external arg1 | complete
+```