3 files changed, 10 insertions, 7 deletions
diff --git a/helix-view/src/commands.rs b/helix-view/src/commands.rs
index 905f4e10..1d7737f0 100644
--- a/helix-view/src/commands.rs
+++ b/helix-view/src/commands.rs
@@ -309,6 +309,10 @@ pub fn append_mode(view: &mut View, _count: usize) {
 
 // TODO: I, A, o and O can share a lot of the primitives.
 
+pub fn command_mode(_view: &mut View, _count: usize) {
+    unimplemented!()
+}
+
 // calculate line numbers for each selection range
 fn selection_lines(state: &State) -> Vec<usize> {
     let mut lines = state
diff --git a/helix-view/src/keymap.rs b/helix-view/src/keymap.rs
index f70b9deb..69e6cabb 100644
--- a/helix-view/src/keymap.rs
+++ b/helix-view/src/keymap.rs
@@ -163,6 +163,7 @@ pub fn default() -> Keymaps {
                 vec![key!('p')] => commands::paste,
                 vec![key!('>')] => commands::indent,
                 vec![key!('<')] => commands::unindent,
+                vec![key!(':')] => commands::command_mode,
                 vec![Key {
                     code: KeyCode::Esc,
                     modifiers: Modifiers::NONE
diff --git a/helix-view/src/prompt.rs b/helix-view/src/prompt.rs
index 749e54d2..8186b476 100644
--- a/helix-view/src/prompt.rs
+++ b/helix-view/src/prompt.rs
@@ -6,17 +6,17 @@ pub struct Prompt {
     pub prompt: String,
     pub line: String,
     pub cursor: usize,
-    pub completion: Option<Vec<String>>,
+    pub completion: Vec<String>,
     pub should_close: bool,
     pub completion_selection_index: Option<usize>,
-    completion_fn: Box<dyn FnMut(&str) -> Option<Vec<String>>>,
+    completion_fn: Box<dyn FnMut(&str) -> Vec<String>>,
     callback_fn: Box<dyn FnMut(&mut Editor, &str)>,
 }
 
 impl Prompt {
     pub fn new(
         prompt: String,
-        mut completion_fn: impl FnMut(&str) -> Option<Vec<String>> + 'static,
+        mut completion_fn: impl FnMut(&str) -> Vec<String> + 'static,
         callback_fn: impl FnMut(&mut Editor, &str) + 'static,
     ) -> Prompt {
         Prompt {
@@ -68,11 +68,11 @@ impl Prompt {
     }
 
     pub fn change_completion_selection(&mut self) {
-        if self.completion.is_some() {
+        if !self.completion.is_empty() {
             self.completion_selection_index = self
                 .completion_selection_index
                 .map(|i| {
-                    if i == self.completion.as_ref().unwrap().len() - 1 {
+                    if i == self.completion.len() - 1 {
                         0
                     } else {
                         i + 1
@@ -81,8 +81,6 @@ impl Prompt {
                 .or(Some(0));
             self.line = String::from(
                 self.completion
-                    .as_ref()
-                    .unwrap()
                     .get(self.completion_selection_index.unwrap())
                     .unwrap(),
             );