add register completion (#9936)

1 files changed, 14 insertions, 0 deletions

diff --git a/helix-term/src/ui/mod.rs b/helix-term/src/ui/mod.rs
index a4b148af..b5969818 100644
--- a/helix-term/src/ui/mod.rs
+++ b/helix-term/src/ui/mod.rs
@@ -509,4 +509,18 @@ pub mod completers {
             files
         }
     }
+
+    pub fn register(editor: &Editor, input: &str) -> Vec<Completion> {
+        let iter = editor
+            .registers
+            .iter_preview()
+            // Exclude special registers that shouldn't be written to
+            .filter(|(ch, _)| !matches!(ch, '%' | '#' | '.'))
+            .map(|(ch, _)| ch.to_string());
+
+        fuzzy_match(input, iter, false)
+            .into_iter()
+            .map(|(name, _)| ((0..), name.into()))
+            .collect()
+    }
 }