builtin command to display escape characters

2 files changed, 21 insertions, 0 deletions

diff --git a/src/run/builtin.rs b/src/run/builtin.rs
index 7a60017..5c7cffd 100644
--- a/src/run/builtin.rs
+++ b/src/run/builtin.rs
@@ -177,3 +177,23 @@ impl Builtin for history {
         todo!("need session")
     }
 }
+
+pub struct escape;
+impl Builtin for escape {
+    fn name(&self) -> &str {
+        "escape"
+    }
+    fn io(
+        &self,
+        args: &[BString],
+        _stdin: &mut dyn Read,
+        stdout: &mut dyn Write,
+    ) -> std::io::Result<()> {
+        for arg in args.iter() {
+            let escaped = arg.escape_ascii().to_string();
+            stdout.write_all(escaped.as_bytes())?;
+            stdout.write_all(b" ")?;
+        }
+        Ok(())
+    }
+}
diff --git a/src/run/mod.rs b/src/run/mod.rs
index c9a156d..8c629b0 100644
--- a/src/run/mod.rs
+++ b/src/run/mod.rs
@@ -286,6 +286,7 @@ const BUILTINS: &[&'static dyn Builtin] = &[
     &builtin::builtins,
     &builtin::_type,
     &builtin::history,
+    &builtin::escape,
 ];
 
 pub struct CommandDispatch {