commands: add * as selection search.

helix-core/src/selection.rs

@@ -120,7 +120,7 @@ pub fn extend(&self, from: usize, to: usize) -> Self {
     // groupAt
 
     #[inline]
-    pub fn fragment<'a>(&'a self, text: RopeSlice<'a>) -> Cow<'a, str> {
+    pub fn fragment<'a, 'b: 'a>(&'a self, text: RopeSlice<'b>) -> Cow<'b, str> {
         Cow::from(text.slice(self.from()..self.to() + 1))
     }
 }

helix-term/src/commands.rs

@@ -1,7 +1,7 @@
 use helix_core::{
     comment, graphemes,
     indent::TAB_WIDTH,
-    regex::Regex,
+    regex::{self, Regex},
     register, selection,
     state::{Direction, Granularity, State},
     ChangeSet, Range, Selection, Tendril, Transaction,
@@ -412,6 +412,15 @@ pub fn search_next(cx: &mut Context) {
     }
 }
 
+pub fn search_selection(cx: &mut Context) {
+    let doc = cx.doc();
+    let contents = doc.text().slice(..);
+    let query = doc.selection().primary().fragment(contents);
+    let regex = regex::escape(&query);
+    register::set('\\', vec![regex]);
+    search_next(cx);
+}
+
 // TODO: N -> search_prev
 // need to loop around buffer also and show a message
 // same for no matches

helix-term/src/keymap.rs

@@ -170,6 +170,7 @@ pub fn default() -> Keymaps {
                 vec![key!('x')] => commands::select_line,
                 vec![key!('/')] => commands::search,
                 vec![key!('n')] => commands::search_next,
+                vec![key!('*')] => commands::search_selection,
                 vec![key!('u')] => commands::undo,
                 vec![shift!('U')] => commands::redo,
                 vec![key!('y')] => commands::yank,