Add an unstable option to print all unversioned files

This allows sharing those files between different doc invocations
without having to know their names ahead of time.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index d214cea8fc4..9e843245442 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -524,6 +524,9 @@ fn opts() -> Vec<RustcOptGroup> {
                 "Generate JSON file at the top level instead of generating HTML redirection files",
             )
         }),
+        unstable("print", |o| {
+            o.optmulti("", "print", "Rustdoc information to print on stdout", "[unversioned-files]")
+        }),
     ]
 }