From c4068c642c90bc56ea6cd89f72a04020aa1dd049 Mon Sep 17 00:00:00 2001
From: Ayman Bagabas <ayman.bagabas@gmail.com>
Date: Fri, 1 Aug 2025 12:22:10 -0400
Subject: [PATCH 1/3] fix(textarea): ensure viewport content is set during
 update

This ensures that the viewport content is set and persisted correctly.
Setting the content during View won't doesn't work because it mutates a
copy of the model instead without persisting the changes. Moreover, any
after effects of setting the content won't be visible because the next
Update will be called on the older model, not the new one.
---
 textarea/textarea.go | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/textarea/textarea.go b/textarea/textarea.go
index 4c44935..0e9a2a6 100644
--- a/textarea/textarea.go
+++ b/textarea/textarea.go
@@ -1235,6 +1235,9 @@ func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
 		m.Err = msg
 	}
 
+	// Make sure we set the content of the viewport before updating it.
+	view := m.view()
+	m.viewport.SetContent(view)
 	vp, cmd := m.viewport.Update(msg)
 	m.viewport = &vp
 	cmds = append(cmds, cmd)
@@ -1257,9 +1260,8 @@ func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
 	return m, tea.Batch(cmds...)
 }
 
-// View renders the text area in its current state.
-func (m Model) View() string {
-	if m.Value() == "" && m.row == 0 && m.col == 0 && m.Placeholder != "" {
+func (m *Model) view() string {
+	if len(m.Value()) == 0 && m.row == 0 && m.col == 0 && m.Placeholder != "" {
 		return m.placeholderView()
 	}
 	m.virtualCursor.TextStyle = m.activeStyle().computedCursorLine()
@@ -1352,8 +1354,22 @@ func (m Model) View() string {
 		s.WriteRune('\n')
 	}
 
-	m.viewport.SetContent(s.String())
-	return styles.Base.Render(m.viewport.View())
+	return s.String()
+}
+
+// View renders the text area in its current state.
+func (m Model) View() string {
+	view := strings.TrimSpace(m.viewport.View())
+	if view == "" {
+		// XXX: This is a workaround for the case where the viewport hasn't
+		// been initialized yet like during the initial render. In that case,
+		// we need to render the view again because Update hasn't been called
+		// yet to set the content of the viewport.
+		m.viewport.SetContent(m.view())
+		view = m.viewport.View()
+	}
+	styles := m.activeStyle()
+	return styles.Base.Render(view)
 }
 
 // promptView renders a single line of the prompt.

From efdc0e8e45beac54dc3b92aea226d2cb995ac846 Mon Sep 17 00:00:00 2001
From: Ayman Bagabas <ayman.bagabas@gmail.com>
Date: Thu, 7 Aug 2025 10:45:21 -0400
Subject: [PATCH 2/3] fix(textarea): use pointer receiver for Model methods

---
 textarea/textarea.go | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/textarea/textarea.go b/textarea/textarea.go
index 0e9a2a6..a4eac95 100644
--- a/textarea/textarea.go
+++ b/textarea/textarea.go
@@ -334,7 +334,7 @@ type Model struct {
 }
 
 // New creates a new model with default settings.
-func New() Model {
+func New() *Model {
 	vp := viewport.New()
 	vp.KeyMap = viewport.KeyMap{}
 	cur := cursor.New()
@@ -365,7 +365,7 @@ func New() Model {
 	m.SetHeight(defaultHeight)
 	m.SetWidth(defaultWidth)
 
-	return m
+	return &m
 }
 
 // DefaultStyles returns the default styles for focused and blurred states for
@@ -1116,7 +1116,7 @@ func (m *Model) SetHeight(h int) {
 }
 
 // Update is the Bubble Tea update loop.
-func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
+func (m *Model) Update(msg tea.Msg) (*Model, tea.Cmd) {
 	if !m.focus {
 		m.virtualCursor.Blur()
 		return m, nil
@@ -1358,16 +1358,13 @@ func (m *Model) view() string {
 }
 
 // View renders the text area in its current state.
-func (m Model) View() string {
-	view := strings.TrimSpace(m.viewport.View())
-	if view == "" {
-		// XXX: This is a workaround for the case where the viewport hasn't
-		// been initialized yet like during the initial render. In that case,
-		// we need to render the view again because Update hasn't been called
-		// yet to set the content of the viewport.
-		m.viewport.SetContent(m.view())
-		view = m.viewport.View()
-	}
+func (m *Model) View() string {
+	// XXX: This is a workaround for the case where the viewport hasn't
+	// been initialized yet like during the initial render. In that case,
+	// we need to render the view again because Update hasn't been called
+	// yet to set the content of the viewport.
+	m.viewport.SetContent(m.view())
+	view := m.viewport.View()
 	styles := m.activeStyle()
 	return styles.Base.Render(view)
 }

From 86f33262953915d4ca1a49e7fb74eb842990600a Mon Sep 17 00:00:00 2001
From: Ayman Bagabas <ayman.bagabas@gmail.com>
Date: Thu, 7 Aug 2025 10:45:36 -0400
Subject: [PATCH 3/3] fix(textarea): update tests to reflect changes in
 textarea content

---
 textarea/textarea_test.go | 136 +++++++++++++++++++-------------------
 1 file changed, 68 insertions(+), 68 deletions(-)

diff --git a/textarea/textarea_test.go b/textarea/textarea_test.go
index 91a2840..25e1300 100644
--- a/textarea/textarea_test.go
+++ b/textarea/textarea_test.go
@@ -29,8 +29,8 @@ func TestVerticalScrolling(t *testing.T) {
 
 	view := textarea.View()
 
-	// The view should contain the first "line" of the input.
-	if !strings.Contains(view, "This is a really") {
+	// The view should contain the end of "line" of the input.
+	if !strings.Contains(view, "the text area.") {
 		t.Log(view)
 		t.Error("Text area did not render the input")
 	}
@@ -38,17 +38,19 @@ func TestVerticalScrolling(t *testing.T) {
 	// But we should be able to scroll to see the next line.
 	// Let's scroll down for each line to view the full input.
 	lines := []string{
+		"This is a really",
 		"long line that",
 		"should wrap around",
 		"the text area.",
 	}
+	textarea.viewport.GotoTop()
 	for _, line := range lines {
-		textarea.viewport.ScrollDown(1)
 		view = textarea.View()
 		if !strings.Contains(view, line) {
 			t.Log(view)
 			t.Error("Text area did not render the correct scrolled input")
 		}
+		textarea.viewport.ScrollDown(1)
 	}
 }
 
@@ -336,7 +338,7 @@ func TestView(t *testing.T) {
 
 	tests := []struct {
 		name      string
-		modelFunc func(Model) Model
+		modelFunc func(*Model) *Model
 		want      want
 	}{
 		{
@@ -354,7 +356,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "single line",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line")
 
 				return m
@@ -374,7 +376,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "multiple lines",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line\nthe second line\nthe third line")
 
 				return m
@@ -394,7 +396,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "single line without line numbers",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line")
 				m.ShowLineNumbers = false
 
@@ -415,7 +417,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "multipline lines without line numbers",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line\nthe second line\nthe third line")
 				m.ShowLineNumbers = false
 
@@ -436,7 +438,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "single line and custom end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line")
 				m.EndOfBufferCharacter = '*'
 
@@ -457,7 +459,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "multiple lines and custom end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line\nthe second line\nthe third line")
 				m.EndOfBufferCharacter = '*'
 
@@ -478,7 +480,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "single line without line numbers and custom end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line")
 				m.ShowLineNumbers = false
 				m.EndOfBufferCharacter = '*'
@@ -500,7 +502,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "multiple lines without line numbers and custom end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line\nthe second line\nthe third line")
 				m.ShowLineNumbers = false
 				m.EndOfBufferCharacter = '*'
@@ -522,7 +524,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "single line and custom prompt",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line")
 				m.Prompt = "* "
 
@@ -543,7 +545,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "multiple lines and custom prompt",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetValue("the first line\nthe second line\nthe third line")
 				m.Prompt = "* "
 
@@ -564,7 +566,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "type single line",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				input := "foo"
 				m = sendString(m, input)
 
@@ -585,7 +587,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "type multiple lines",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				input := "foo\nbar\nbaz"
 				m = sendString(m, input)
 
@@ -606,7 +608,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "softwrap",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.ShowLineNumbers = false
 				m.Prompt = ""
 				m.SetWidth(5)
@@ -631,7 +633,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "single line character limit",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.CharLimit = 7
 
 				input := "foo bar baz"
@@ -654,7 +656,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "multiple lines character limit",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.CharLimit = 19
 
 				input := "foo bar baz\nfoo bar baz"
@@ -677,7 +679,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(10)
 
 				input := "12"
@@ -700,7 +702,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width max length text minus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(10)
 
 				input := "123"
@@ -723,7 +725,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width max length text",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(10)
 
 				input := "1234"
@@ -746,7 +748,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width max length text plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(10)
 
 				input := "12345"
@@ -769,7 +771,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width set max width minus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.MaxWidth = 10
 				m.SetWidth(11)
 
@@ -793,7 +795,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width set max width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.MaxWidth = 10
 				m.SetWidth(11)
 
@@ -817,7 +819,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width set max width plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.MaxWidth = 10
 				m.SetWidth(11)
 
@@ -841,7 +843,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width min width minus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(6)
 
 				input := "123"
@@ -864,7 +866,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width min width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(7)
 
 				input := "123"
@@ -887,7 +889,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width min width no line numbers",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.ShowLineNumbers = false
 				m.SetWidth(0)
 
@@ -911,7 +913,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width min width no line numbers no prompt",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.ShowLineNumbers = false
 				m.Prompt = ""
 				m.SetWidth(0)
@@ -936,7 +938,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width min width plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(8)
 
 				input := "123"
@@ -959,7 +961,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width without line numbers max length text minus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.ShowLineNumbers = false
 				m.SetWidth(6)
 
@@ -983,7 +985,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width without line numbers max length text",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.ShowLineNumbers = false
 				m.SetWidth(6)
 
@@ -1007,7 +1009,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width without line numbers max length text plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.ShowLineNumbers = false
 				m.SetWidth(6)
 
@@ -1031,7 +1033,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width with style",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1061,7 +1063,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width with style max width minus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1091,7 +1093,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width with style max width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1121,7 +1123,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width with style max width plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1151,7 +1153,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width without line numbers with style",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1182,7 +1184,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width without line numbers with style max width minus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1213,7 +1215,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width without line numbers with style max width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1244,7 +1246,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "set width without line numbers with style max width plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				s := m.Styles()
 				s.Focused.Base = lipgloss.NewStyle().Border(lipgloss.NormalBorder())
 				m.SetStyles(s)
@@ -1275,7 +1277,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder min width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.SetWidth(0)
 
 				return m
@@ -1293,7 +1295,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line"
 				m.ShowLineNumbers = false
 
@@ -1312,7 +1314,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line\nplaceholder the second line\nplaceholder the third line"
 				m.ShowLineNumbers = false
 
@@ -1331,7 +1333,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line with line numbers",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line"
 				m.ShowLineNumbers = true
 
@@ -1350,7 +1352,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines with line numbers",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line\nplaceholder the second line\nplaceholder the third line"
 				m.ShowLineNumbers = true
 
@@ -1369,7 +1371,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line with end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line"
 				m.ShowLineNumbers = false
 				m.EndOfBufferCharacter = '*'
@@ -1389,7 +1391,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines with with end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line\nplaceholder the second line\nplaceholder the third line"
 				m.ShowLineNumbers = false
 				m.EndOfBufferCharacter = '*'
@@ -1409,7 +1411,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line with line numbers and end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line"
 				m.ShowLineNumbers = true
 				m.EndOfBufferCharacter = '*'
@@ -1429,7 +1431,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines with line numbers and end of buffer character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line\nplaceholder the second line\nplaceholder the third line"
 				m.ShowLineNumbers = true
 				m.EndOfBufferCharacter = '*'
@@ -1449,7 +1451,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line that is longer than max width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line that is longer than the max width"
 				m.SetWidth(40)
 				m.ShowLineNumbers = false
@@ -1469,7 +1471,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines that are longer than max width",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line that is longer than the max width\nplaceholder the second line that is longer than the max width"
 				m.ShowLineNumbers = false
 				m.SetWidth(40)
@@ -1489,7 +1491,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line that is longer than max width with line numbers",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line that is longer than the max width"
 				m.ShowLineNumbers = true
 				m.SetWidth(40)
@@ -1509,7 +1511,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines that are longer than max width with line numbers",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "placeholder the first line that is longer than the max width\nplaceholder the second line that is longer than the max width"
 				m.ShowLineNumbers = true
 				m.SetWidth(40)
@@ -1529,7 +1531,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line that is longer than max width at limit",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "123456789012345678"
 				m.ShowLineNumbers = false
 				m.SetWidth(20)
@@ -1549,7 +1551,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line that is longer than max width at limit plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "1234567890123456789"
 				m.ShowLineNumbers = false
 				m.SetWidth(20)
@@ -1569,7 +1571,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line that is longer than max width with line numbers at limit",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "12345678901234"
 				m.ShowLineNumbers = true
 				m.SetWidth(20)
@@ -1589,7 +1591,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder single line that is longer than max width with line numbers at limit plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "123456789012345"
 				m.ShowLineNumbers = true
 				m.SetWidth(20)
@@ -1609,7 +1611,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines that are longer than max width at limit",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "123456789012345678\n123456789012345678"
 				m.ShowLineNumbers = false
 				m.SetWidth(20)
@@ -1629,7 +1631,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines that are longer than max width at limit plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "1234567890123456789\n1234567890123456789"
 				m.ShowLineNumbers = false
 				m.SetWidth(20)
@@ -1649,7 +1651,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines that are longer than max width with line numbers at limit",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "12345678901234\n12345678901234"
 				m.ShowLineNumbers = true
 				m.SetWidth(20)
@@ -1669,7 +1671,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder multiple lines that are longer than max width with line numbers at limit plus one",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "123456789012345\n123456789012345"
 				m.ShowLineNumbers = true
 				m.SetWidth(20)
@@ -1689,7 +1691,7 @@ func TestView(t *testing.T) {
 		},
 		{
 			name: "placeholder chinese character",
-			modelFunc: func(m Model) Model {
+			modelFunc: func(m *Model) *Model {
 				m.Placeholder = "输入消息..."
 				m.ShowLineNumbers = true
 				m.SetWidth(20)
@@ -1710,8 +1712,6 @@ func TestView(t *testing.T) {
 	}
 
 	for _, tt := range tests {
-		tt := tt
-
 		t.Run(tt.name, func(t *testing.T) {
 			t.Parallel()
 
@@ -1794,7 +1794,7 @@ func TestWord(t *testing.T) {
 	})
 }
 
-func newTextArea() Model {
+func newTextArea() *Model {
 	textarea := New()
 
 	textarea.Prompt = "> "
@@ -1811,7 +1811,7 @@ func keyPress(key rune) tea.Msg {
 	return tea.KeyPressMsg{Code: key, Text: string(key)}
 }
 
-func sendString(m Model, str string) Model {
+func sendString(m *Model, str string) *Model {
 	for _, k := range []rune(str) {
 		m, _ = m.Update(keyPress(k))
 	}