feat: implemented ^ (_ alias), tested

FEATURES.md

@@ -21,7 +21,7 @@
 - [x] `0` - Move to start of line
 - [x] `$` - Move to end of line
 - [x] `_` - Move to first non-whitespace
-- [ ] `^` - Move to first non-whitespace (alias for `_`)
+- [x] `^` - Move to first non-whitespace (alias for `_`)
 - [ ] `|` - Move to column N
 
 ### File Movement
@@ -410,7 +410,7 @@ Buffers are in-memory representations of files. A buffer exists for each open fi
 ### Well Tested
 - [x] Basic motions (h, j, k, l)
 - [x] Word motions (w, e, b)
-- [x] Jump motions (G, gg, 0, $, _)
+- [x] Jump motions (G, gg, 0, $, _, ^)
 - [x] Scroll actions (ctrl+u, ctrl+d)
 - [x] Delete operator (d, dd)
 - [x] Yank operator (y, yy)

internal/editor/integration_motion_jump_test.go

@@ -306,3 +306,82 @@ func TestMoveToLineContentStart(t *testing.T) {
 		}
 	})
 }
+
+func TestMoveToLineContentStartAlias(t *testing.T) {
+	t.Run("test '^' from middle of line with no leading whitespace", func(t *testing.T) {
+		lines := []string{"hello world"}
+		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 6, Line: 0})
+		sendKeys(tm, "^")
+
+		m := getFinalModel(t, tm)
+		if m.CursorX() != 0 {
+			t.Errorf("CursorX() = %d, want 0", m.CursorX())
+		}
+	})
+
+	t.Run("test '^' from middle of line with leading whitespace", func(t *testing.T) {
+		lines := []string{"    hello world"}
+		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 10, Line: 0})
+		sendKeys(tm, "^")
+
+		m := getFinalModel(t, tm)
+		if m.CursorX() != 4 {
+			t.Errorf("CursorX() = %d, want 4", m.CursorX())
+		}
+	})
+
+	t.Run("test '^' from start of line with leading whitespace", func(t *testing.T) {
+		lines := []string{"    hello world"}
+		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 0, Line: 0})
+		sendKeys(tm, "^")
+
+		m := getFinalModel(t, tm)
+		if m.CursorX() != 4 {
+			t.Errorf("CursorX() = %d, want 4", m.CursorX())
+		}
+	})
+
+	t.Run("test '^' from start of line with no leading whitespace", func(t *testing.T) {
+		lines := []string{"hello world"}
+		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 0, Line: 0})
+		sendKeys(tm, "^")
+
+		m := getFinalModel(t, tm)
+		if m.CursorX() != 0 {
+			t.Errorf("CursorX() = %d, want 0", m.CursorX())
+		}
+	})
+
+	t.Run("test '^' from middle of line with only whitespace", func(t *testing.T) {
+		lines := []string{"     "}
+		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 2, Line: 0})
+		sendKeys(tm, "^")
+
+		m := getFinalModel(t, tm)
+		if m.CursorX() != 4 {
+			t.Errorf("CursorX() = %d, want 4", m.CursorX())
+		}
+	})
+
+	t.Run("test '^' from end of line with only whitespace", func(t *testing.T) {
+		lines := []string{"     "}
+		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 4, Line: 0})
+		sendKeys(tm, "^")
+
+		m := getFinalModel(t, tm)
+		if m.CursorX() != 4 {
+			t.Errorf("CursorX() = %d, want 4", m.CursorX())
+		}
+	})
+
+	t.Run("test '^' on empty line", func(t *testing.T) {
+		lines := []string{""}
+		tm := newTestModelWithLinesAndCursorPos(t, lines, action.Position{Col: 0, Line: 0})
+		sendKeys(tm, "^")
+
+		m := getFinalModel(t, tm)
+		if m.CursorX() != 0 {
+			t.Errorf("CursorX() = %d, want 0", m.CursorX())
+		}
+	})
+}

internal/input/keymap.go

@@ -25,6 +25,7 @@ func NewNormalKeymap() *Keymap {
 			"0":      motion.MoveToLineStart{},
 			"$":      motion.MoveToLineEnd{},
 			"_":      motion.MoveToLineContentStart{},
+			"^":      motion.MoveToLineContentStart{},
 			"w":      motion.MoveForwardWord{Count: 1},
 			"e":      motion.MoveForwardWordEnd{Count: 1},
 			"b":      motion.MoveBackwardWord{Count: 1},
@@ -69,6 +70,7 @@ func NewVisualKeymap() *Keymap {
 			"0":  motion.MoveToLineStart{},
 			"$":  motion.MoveToLineEnd{},
 			"_":  motion.MoveToLineContentStart{},
+			"^":  motion.MoveToLineContentStart{},
 			"w":  motion.MoveForwardWord{Count: 1},
 			"e":  motion.MoveForwardWordEnd{Count: 1},
 			"b":  motion.MoveBackwardWord{Count: 1},