Add `-` (stdin) support to rustdoc

1 files changed, 6 insertions, 0 deletions

diff --git a/src/doc/rustdoc/src/command-line-arguments.md b/src/doc/rustdoc/src/command-line-arguments.md
index 822f341b370..9edfb873f0b 100644
--- a/src/doc/rustdoc/src/command-line-arguments.md
+++ b/src/doc/rustdoc/src/command-line-arguments.md
@@ -417,6 +417,12 @@ When `rustdoc` receives this flag, it will print an extra "Version (version)" in
 the crate root's docs. You can use this flag to differentiate between different versions of your
 library's documentation.
 
+## `-`: load source code from the standard input
+
+If you specify `-` as the INPUT on the command line, then `rustdoc` will read the
+source code from stdin (standard input stream) until the EOF, instead of the file
+system with an otherwise specified path.
+
 ## `@path`: load command-line flags from a path
 
 If you specify `@path` on the command-line, then it will open `path` and read