Improve word boundary algorithm to ignore previous spaces so that control+arrow-keys will skip over repeated spaces

client/tui/tui.go

@@ -454,12 +454,20 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 func calculateWordBoundaries(input string) []int {
 	ret := make([]int, 0)
 	ret = append(ret, 0)
+	prevWasBreaking := false
 	for idx, char := range input {
 		if char == ' ' || char == '-' {
-			ret = append(ret, idx)
+			if !prevWasBreaking {
+				ret = append(ret, idx)
+			}
+			prevWasBreaking = true
+		} else {
+			prevWasBreaking = false
 		}
 	}
-	ret = append(ret, len(input))
+	if !prevWasBreaking {
+		ret = append(ret, len(input))
+	}
 	return ret
 }
 

client/tui/tui_test.go

@@ -0,0 +1,16 @@
+package tui
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestCalculateWordBoundaries(t *testing.T) {
+	require.Equal(t, []int{0, 3}, calculateWordBoundaries("foo"))
+	require.Equal(t, []int{0, 3, 7}, calculateWordBoundaries("foo bar"))
+	require.Equal(t, []int{0, 3, 7}, calculateWordBoundaries("foo-bar"))
+	require.Equal(t, []int{0, 3, 7, 11}, calculateWordBoundaries("foo-bar baz"))
+	require.Equal(t, []int{0, 3, 10, 16}, calculateWordBoundaries("foo-- -bar - baz"))
+	require.Equal(t, []int{0, 3}, calculateWordBoundaries("foo    "))
+}