Add command to extend to line start or end (#717)

helix-term/src/commands.rs

@@ -252,6 +252,9 @@ impl Command {
         // TODO: different description ?
         goto_line_end_newline, "Goto line end",
         goto_first_nonwhitespace, "Goto first non-blank in line",
+        extend_to_line_start, "Extend to line start",
+        extend_to_line_end, "Extend to line end",
+        extend_to_line_end_newline, "Extend to line end",
         signature_help, "Show signature help",
         insert_tab, "Insert tab char",
         insert_newline, "Insert newline char",
@@ -407,7 +410,7 @@ fn extend_line_down(cx: &mut Context) {
     move_impl(cx, move_vertically, Direction::Forward, Movement::Extend)
 }
 
-fn goto_line_end(cx: &mut Context) {
+fn goto_line_end_impl(cx: &mut Context, movement: Movement) {
     let (view, doc) = current!(cx.editor);
     let text = doc.text().slice(..);
 
@@ -418,25 +421,41 @@ fn goto_line_end(cx: &mut Context) {
         let pos = graphemes::prev_grapheme_boundary(text, line_end_char_index(&text, line))
             .max(line_start);
 
-        range.put_cursor(text, pos, doc.mode == Mode::Select)
+        range.put_cursor(text, pos, movement == Movement::Extend)
     });
     doc.set_selection(view.id, selection);
 }
 
-fn goto_line_end_newline(cx: &mut Context) {
+fn goto_line_end(cx: &mut Context) {
+    goto_line_end_impl(cx, Movement::Move)
+}
+
+fn extend_to_line_end(cx: &mut Context) {
+    goto_line_end_impl(cx, Movement::Extend)
+}
+
+fn goto_line_end_newline_impl(cx: &mut Context, movement: Movement) {
     let (view, doc) = current!(cx.editor);
     let text = doc.text().slice(..);
 
     let selection = doc.selection(view.id).clone().transform(|range| {
         let line = range.cursor_line(text);
         let pos = line_end_char_index(&text, line);
 
-        range.put_cursor(text, pos, doc.mode == Mode::Select)
+        range.put_cursor(text, pos, movement == Movement::Extend)
     });
     doc.set_selection(view.id, selection);
 }
 
-fn goto_line_start(cx: &mut Context) {
+fn goto_line_end_newline(cx: &mut Context) {
+    goto_line_end_newline_impl(cx, Movement::Move)
+}
+
+fn extend_to_line_end_newline(cx: &mut Context) {
+    goto_line_end_newline_impl(cx, Movement::Extend)
+}
+
+fn goto_line_start_impl(cx: &mut Context, movement: Movement) {
     let (view, doc) = current!(cx.editor);
     let text = doc.text().slice(..);
 
@@ -445,11 +464,19 @@ fn goto_line_start(cx: &mut Context) {
 
         // adjust to start of the line
         let pos = text.line_to_char(line);
-        range.put_cursor(text, pos, doc.mode == Mode::Select)
+        range.put_cursor(text, pos, movement == Movement::Extend)
     });
     doc.set_selection(view.id, selection);
 }
 
+fn goto_line_start(cx: &mut Context) {
+    goto_line_start_impl(cx, Movement::Move)
+}
+
+fn extend_to_line_start(cx: &mut Context) {
+    goto_line_start_impl(cx, Movement::Extend)
+}
+
 fn goto_first_nonwhitespace(cx: &mut Context) {
     let (view, doc) = current!(cx.editor);
     let text = doc.text().slice(..);

helix-term/src/keymap.rs

@@ -592,8 +592,8 @@ impl Default for Keymaps {
             "T" => extend_till_prev_char,
             "F" => extend_prev_char,
 
-            "home" => goto_line_start,
-            "end" => goto_line_end,
+            "home" => extend_to_line_start,
+            "end" => extend_to_line_end,
             "esc" => exit_select_mode,
 
             "v" => normal_mode,