--- a/rust/rhg/src/commands/cat.rs	Tue Dec 01 02:07:15 2020 +0100
+++ b/rust/rhg/src/commands/cat.rs	Mon Nov 30 19:26:54 2020 +0100
@@ -70,7 +70,7 @@
             )),
             CatRevErrorKind::InvalidRevision => CommandErrorKind::Abort(Some(
                 utf8_to_local(&format!(
-                    "abort: invalid revision identifier{}\n",
+                    "abort: invalid revision identifier {}\n",
                     rev
                 ))
                 .into(),