feat: smart_tab

Implement `smart_tab`, which optionally makes the tab key run the
`move_parent_node_start` command when the cursor has non- whitespace to
its left.

1 files changed, 16 insertions, 1 deletions

diff --git a/helix-term/src/ui/menu.rs b/helix-term/src/ui/menu.rs
index bdad2e40..c73e7bed 100644
--- a/helix-term/src/ui/menu.rs
+++ b/helix-term/src/ui/menu.rs
@@ -11,7 +11,7 @@ pub use tui::widgets::{Cell, Row};
 use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
 use fuzzy_matcher::FuzzyMatcher;
 
-use helix_view::{graphics::Rect, Editor};
+use helix_view::{editor::SmartTabConfig, graphics::Rect, Editor};
 use tui::layout::Constraint;
 
 pub trait Item {
@@ -247,6 +247,21 @@ impl<T: Item + 'static> Component for Menu<T> {
             compositor.pop();
         }));
 
+        // Ignore tab key when supertab is turned on in order not to interfere
+        // with it. (Is there a better way to do this?)
+        if (event == key!(Tab) || event == shift!(Tab))
+            && cx.editor.config().auto_completion
+            && matches!(
+                cx.editor.config().smart_tab,
+                Some(SmartTabConfig {
+                    enable: true,
+                    supersede_menu: true,
+                })
+            )
+        {
+            return EventResult::Ignored(None);
+        }
+
         match event {
             // esc or ctrl-c aborts the completion and closes the menu
             key!(Esc) | ctrl!('c') => {