Revert "feat: improve file attachment pasting (#1704)"

This reverts commit 81a3e02474445bc4d22c7857d4c3b1f591c1cb56.

3 files changed, 49 insertions, 435 deletions

diff --git a/packages/tui/internal/components/chat/editor.go b/packages/tui/internal/components/chat/editor.go
index 1cfbbc064..509de6244 100644
--- a/packages/tui/internal/components/chat/editor.go
+++ b/packages/tui/internal/components/chat/editor.go
@@ -27,50 +27,6 @@ import (
 	"github.com/sst/opencode/internal/util"
 )
 
-type AttachmentInsertedMsg struct{}
-
-// unescapeClipboardText trims surrounding quotes from clipboard text and returns the inner content.
-// It avoids interpreting backslash escape sequences unless the text is explicitly quoted.
-func (m *editorComponent) unescapeClipboardText(s string) string {
-	t := strings.TrimSpace(s)
-	if len(t) >= 2 {
-		first := t[0]
-		last := t[len(t)-1]
-		if (first == '"' && last == '"') || (first == '\'' && last == '\'') {
-			if u, err := strconv.Unquote(t); err == nil {
-				return u
-			}
-			return t[1 : len(t)-1]
-		}
-	}
-	return t
-}
-
-// pathExists checks if the given path exists. Relative paths are resolved against the app CWD.
-// Supports expanding '~' to the user's home directory.
-func (m *editorComponent) pathExists(p string) bool {
-	if p == "" {
-		return false
-	}
-	if strings.HasPrefix(p, "~") {
-		if home, err := os.UserHomeDir(); err == nil {
-			if p == "~" {
-				p = home
-			} else if strings.HasPrefix(p, "~/") {
-				p = filepath.Join(home, p[2:])
-			}
-		}
-	}
-	check := p
-	if !filepath.IsAbs(check) {
-		check = filepath.Join(m.app.Info.Path.Cwd, check)
-	}
-	if _, err := os.Stat(check); err == nil {
-		return true
-	}
-	return false
-}
-
 type EditorComponent interface {
 	tea.Model
 	tea.ViewModel
@@ -197,123 +153,60 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			return m, nil
 		}
 	case tea.PasteMsg:
-		// Normalize clipboard text first
-		textRaw := string(msg)
-		text := m.unescapeClipboardText(textRaw)
-
-		// Case 1: pasted content contains one or more inline @paths -> insert attachments inline
-		// We scan the raw pasted text to preserve original content around attachments.
-		if strings.Contains(textRaw, "@") {
-			last := 0
-			idx := 0
-			inserted := 0
-			for idx < len(textRaw) {
-				r, size := utf8.DecodeRuneInString(textRaw[idx:])
-				if r != '@' {
-					idx += size
-					continue
-				}
-
-				// Insert preceding chunk before attempting to consume a path
-				if idx > last {
-					m.textarea.InsertRunesFromUserInput([]rune(textRaw[last:idx]))
-				}
-
-				// Extract candidate path after '@' up to whitespace
-				start := idx + size
-				end := start
-				for end < len(textRaw) {
-					nr, ns := utf8.DecodeRuneInString(textRaw[end:])
-					if nr == ' ' || nr == '\t' || nr == '\n' || nr == '\r' {
-						break
-					}
-					end += ns
-				}
-
-				if end > start {
-					raw := textRaw[start:end]
-					// Trim common trailing punctuation that may follow paths in prose
-					trimmed := strings.TrimRight(raw, ",.;:)]}\\\"'?!")
-					suffix := raw[len(trimmed):]
-					p := filepath.Clean(trimmed)
-					if m.pathExists(p) {
-						att := m.createAttachmentFromPath(p)
-						if att != nil {
-							m.textarea.InsertAttachment(att)
-							if suffix != "" {
-								m.textarea.InsertRunesFromUserInput([]rune(suffix))
-							}
-							// Insert a trailing space only if the next rune isn't already whitespace
-							insertSpace := true
-							if end < len(textRaw) {
-								nr, _ := utf8.DecodeRuneInString(textRaw[end:])
-								if nr == ' ' || nr == '\t' || nr == '\n' || nr == '\r' {
-									insertSpace = false
-								}
-							}
-							if insertSpace {
-								m.textarea.InsertString(" ")
-							}
-							inserted++
-							last = end
-							idx = end
-							continue
-						}
-					}
-				}
+		text := string(msg)
 
-				// No valid path -> keep the '@' literally
-				m.textarea.InsertRune('@')
-				last = start
-				idx = start
+		if filePath := strings.TrimSpace(strings.TrimPrefix(text, "@")); strings.HasPrefix(text, "@") && filePath != "" {
+			statPath := filePath
+			if !filepath.IsAbs(filePath) {
+				statPath = filepath.Join(m.app.Info.Path.Cwd, filePath)
 			}
-			// Insert any trailing content after the last processed segment
-			if last < len(textRaw) {
-				m.textarea.InsertRunesFromUserInput([]rune(textRaw[last:]))
-			}
-			if inserted > 0 {
-				return m, util.CmdHandler(AttachmentInsertedMsg{})
-			}
-		}
-
-		// Case 2: user typed '@' and then pasted a valid path -> replace '@' with attachment
-		at := m.textarea.LastRuneIndex('@')
-		if at != -1 && at == m.textarea.CursorColumn()-1 {
-			p := filepath.Clean(text)
-			if m.pathExists(p) {
-				cur := m.textarea.CursorColumn()
-				m.textarea.ReplaceRange(at, cur, "")
-				att := m.createAttachmentFromPath(p)
-				if att != nil {
-					m.textarea.InsertAttachment(att)
+			if _, err := os.Stat(statPath); err == nil {
+				attachment := m.createAttachmentFromPath(filePath)
+				if attachment != nil {
+					m.textarea.InsertAttachment(attachment)
 					m.textarea.InsertString(" ")
-					return m, util.CmdHandler(AttachmentInsertedMsg{})
+					return m, nil
 				}
 			}
 		}
 
-		// Case 3: plain path pasted (e.g., drag-and-drop) -> attach if image or PDF
-		{
-			p := filepath.Clean(text)
-			if m.pathExists(p) {
-				mime := getMediaTypeFromExtension(strings.ToLower(filepath.Ext(p)))
-				if strings.HasPrefix(mime, "image/") || mime == "application/pdf" {
-					if att := m.createAttachmentFromFile(p); att != nil {
-						m.textarea.InsertAttachment(att)
-						m.textarea.InsertString(" ")
-						return m, util.CmdHandler(AttachmentInsertedMsg{})
-					}
-				}
+		text = strings.ReplaceAll(text, "\\", "")
+		text, err := strconv.Unquote(`"` + text + `"`)
+		if err != nil {
+			slog.Error("Failed to unquote text", "error", err)
+			text := string(msg)
+			if m.shouldSummarizePastedText(text) {
+				m.handleLongPaste(text)
+			} else {
+				m.textarea.InsertRunesFromUserInput([]rune(msg))
 			}
+			return m, nil
+		}
+		if _, err := os.Stat(text); err != nil {
+			slog.Error("Failed to paste file", "error", err)
+			text := string(msg)
+			if m.shouldSummarizePastedText(text) {
+				m.handleLongPaste(text)
+			} else {
+				m.textarea.InsertRunesFromUserInput([]rune(msg))
+			}
+			return m, nil
 		}
 
-		// Default: do not auto-convert. Insert raw text or summarize long pastes.
-		if m.shouldSummarizePastedText(textRaw) {
-			m.handleLongPaste(textRaw)
+		filePath := text
+
+		attachment := m.createAttachmentFromFile(filePath)
+		if attachment == nil {
+			if m.shouldSummarizePastedText(text) {
+				m.handleLongPaste(text)
+			} else {
+				m.textarea.InsertRunesFromUserInput([]rune(msg))
+			}
 			return m, nil
 		}
-		m.textarea.InsertRunesFromUserInput([]rune(textRaw))
-		return m, nil
+
+		m.textarea.InsertAttachment(attachment)
+		m.textarea.InsertString(" ")
 	case tea.ClipboardMsg:
 		text := string(msg)
 		// Check if the pasted text is long and should be summarized
@@ -340,7 +233,7 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			if atIndex == -1 {
 				// Should not happen, but as a fallback, just insert.
 				m.textarea.InsertString(msg.Item.Value + " ")
-				return m, util.CmdHandler(AttachmentInsertedMsg{})
+				return m, nil
 			}
 
 			// The range to replace is from the '@' up to the current cursor position.
@@ -354,13 +247,13 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			attachment := m.createAttachmentFromPath(filePath)
 			m.textarea.InsertAttachment(attachment)
 			m.textarea.InsertString(" ")
-			return m, util.CmdHandler(AttachmentInsertedMsg{})
+			return m, nil
 		case "symbols":
 			atIndex := m.textarea.LastRuneIndex('@')
 			if atIndex == -1 {
 				// Should not happen, but as a fallback, just insert.
 				m.textarea.InsertString(msg.Item.Value + " ")
-				return m, util.CmdHandler(AttachmentInsertedMsg{})
+				return m, nil
 			}
 
 			cursorCol := m.textarea.CursorColumn()
@@ -394,13 +287,13 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			}
 			m.textarea.InsertAttachment(attachment)
 			m.textarea.InsertString(" ")
-			return m, util.CmdHandler(AttachmentInsertedMsg{})
+			return m, nil
 		case "agents":
 			atIndex := m.textarea.LastRuneIndex('@')
 			if atIndex == -1 {
 				// Should not happen, but as a fallback, just insert.
 				m.textarea.InsertString(msg.Item.Value + " ")
-				return m, util.CmdHandler(AttachmentInsertedMsg{})
+				return m, nil
 			}
 
 			cursorCol := m.textarea.CursorColumn()
@@ -418,7 +311,8 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 			m.textarea.InsertAttachment(attachment)
 			m.textarea.InsertString(" ")
-			return m, util.CmdHandler(AttachmentInsertedMsg{})
+			return m, nil
+
 		default:
 			slog.Debug("Unknown provider", "provider", msg.Item.ProviderID)
 			return m, nil
diff --git a/packages/tui/internal/components/chat/editor_test.go b/packages/tui/internal/components/chat/editor_test.go
deleted file mode 100644
index f43a4078c..000000000
--- a/packages/tui/internal/components/chat/editor_test.go
+++ /dev/null
@@ -1,277 +0,0 @@
-package chat
-
-import (
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	"github.com/charmbracelet/bubbles/v2/spinner"
-	tea "github.com/charmbracelet/bubbletea/v2"
-	"github.com/sst/opencode/internal/app"
-	"github.com/sst/opencode/internal/completions"
-	"github.com/sst/opencode/internal/components/dialog"
-	"github.com/sst/opencode/internal/components/textarea"
-	"github.com/sst/opencode/internal/styles"
-)
-
-func newTestEditor() *editorComponent {
-	m := &editorComponent{
-		app:      &app.App{},
-		textarea: textarea.New(),
-		spinner:  spinner.New(),
-	}
-	return m
-}
-
-func TestPasteAtPathWithTrailingComma_PreservesPunctuation_NoDoubleSpace(t *testing.T) {
-	m := newTestEditor()
-	p := createTempTextFile(t, "", "pc.txt", "x")
-
-	paste := "See @" + p + ", next"
-	_, cmd := m.Update(tea.PasteMsg(paste))
-	if cmd == nil {
-		t.Fatalf("expected command to be returned for comma punctuation paste")
-	}
-	if _, ok := cmd().(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg for comma punctuation paste")
-	}
-	if len(m.textarea.GetAttachments()) != 1 {
-		t.Fatalf("expected 1 attachment, got %d", len(m.textarea.GetAttachments()))
-	}
-	v := m.Value()
-	if !strings.Contains(v, ", next") {
-		t.Fatalf("expected comma and following text to be preserved, got: %q", v)
-	}
-	if strings.Contains(v, ",  next") {
-		t.Fatalf("did not expect double space after comma, got: %q", v)
-	}
-}
-
-func TestPasteAtPathWithTrailingQuestion_PreservesPunctuation_NoDoubleSpace(t *testing.T) {
-	m := newTestEditor()
-	p := createTempTextFile(t, "", "pq.txt", "x")
-
-	paste := "Check @" + p + "? Done"
-	_, cmd := m.Update(tea.PasteMsg(paste))
-	if cmd == nil {
-		t.Fatalf("expected command to be returned for question punctuation paste")
-	}
-	if _, ok := cmd().(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg for question punctuation paste")
-	}
-	if len(m.textarea.GetAttachments()) != 1 {
-		t.Fatalf("expected 1 attachment, got %d", len(m.textarea.GetAttachments()))
-	}
-	v := m.Value()
-	if !strings.Contains(v, "? Done") {
-		t.Fatalf("expected question mark and following text to be preserved, got: %q", v)
-	}
-	if strings.Contains(v, "?  Done") {
-		t.Fatalf("did not expect double space after question mark, got: %q", v)
-	}
-}
-
-func TestPasteMultipleInlineAtPaths_AttachesEach(t *testing.T) {
-	m := newTestEditor()
-	dir := t.TempDir()
-	p1 := createTempTextFile(t, dir, "m1.txt", "one")
-	p2 := createTempTextFile(t, dir, "m2.txt", "two")
-
-	// Build a paste with text around, two @paths, and punctuation after the first
-	paste := "Please check @" + p1 + ", and also @" + p2 + " thanks"
-
-	_, cmd := m.Update(tea.PasteMsg(paste))
-	if cmd == nil {
-		t.Fatalf("expected command to be returned for multi inline paste")
-	}
-	if _, ok := cmd().(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg for multi inline paste")
-	}
-
-	atts := m.textarea.GetAttachments()
-	if len(atts) != 2 {
-		t.Fatalf("expected 2 attachments, got %d", len(atts))
-	}
-	v := m.Value()
-	if !strings.Contains(v, "Please check") || !strings.Contains(v, "and also") || !strings.Contains(v, "thanks") {
-		t.Fatalf("expected surrounding text to be preserved, got: %q", v)
-	}
-}
-
-func createTempTextFile(t *testing.T, dir, name, content string) string {
-	t.Helper()
-	if dir == "" {
-		td, err := os.MkdirTemp("", "editor-test-*")
-		if err != nil {
-			t.Fatalf("failed to make temp dir: %v", err)
-		}
-		dir = td
-	}
-	p := filepath.Join(dir, name)
-	if err := os.WriteFile(p, []byte(content), 0o600); err != nil {
-		t.Fatalf("failed to write temp file: %v", err)
-	}
-	abs, err := filepath.Abs(p)
-	if err != nil {
-		t.Fatalf("failed to get abs path: %v", err)
-	}
-	return abs
-}
-
-func createTempBinFile(t *testing.T, dir, name string, data []byte) string {
-	t.Helper()
-	if dir == "" {
-		td, err := os.MkdirTemp("", "editor-test-*")
-		if err != nil {
-			t.Fatalf("failed to make temp dir: %v", err)
-		}
-		dir = td
-	}
-	p := filepath.Join(dir, name)
-	if err := os.WriteFile(p, data, 0o600); err != nil {
-		t.Fatalf("failed to write temp bin file: %v", err)
-	}
-	abs, err := filepath.Abs(p)
-	if err != nil {
-		t.Fatalf("failed to get abs path: %v", err)
-	}
-	return abs
-}
-
-func TestPasteStartsWithAt_AttachesAndEmitsMsg(t *testing.T) {
-	m := newTestEditor()
-	p := createTempTextFile(t, "", "a.txt", "hello")
-
-	_, cmd := m.Update(tea.PasteMsg("@" + p))
-	if cmd == nil {
-		t.Fatalf("expected command to be returned")
-	}
-	msg := cmd()
-	if _, ok := msg.(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg, got %T", msg)
-	}
-
-	atts := m.textarea.GetAttachments()
-	if len(atts) != 1 {
-		t.Fatalf("expected 1 attachment, got %d", len(atts))
-	}
-	if v := m.Value(); !strings.HasSuffix(v, " ") {
-		t.Fatalf("expected trailing space after attachment, got value: %q", v)
-	}
-}
-
-func TestPasteAfterAt_ReplacesAtWithAttachment(t *testing.T) {
-	m := newTestEditor()
-	p := createTempTextFile(t, "", "b.txt", "hello")
-
-	m.textarea.SetValue("@")
-	// Cursor should be at the end after SetValue; paste absolute path
-	_, cmd := m.Update(tea.PasteMsg(p))
-	if cmd == nil {
-		t.Fatalf("expected command to be returned")
-	}
-	if _, ok := cmd().(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg from paste after '@'")
-	}
-
-	// Ensure the raw '@' rune was removed (attachment inserted in its place)
-	if m.textarea.LastRuneIndex('@') != -1 {
-		t.Fatalf("'@' rune should have been removed from the text slice")
-	}
-	if len(m.textarea.GetAttachments()) != 1 {
-		t.Fatalf("expected 1 attachment inserted")
-	}
-	if v := m.Value(); !strings.HasSuffix(v, " ") {
-		t.Fatalf("expected trailing space after attachment, got value: %q", v)
-	}
-}
-
-func TestPlainTextPaste_NoAttachment_NoMsg(t *testing.T) {
-	m := newTestEditor()
-	_, cmd := m.Update(tea.PasteMsg("hello"))
-	if cmd != nil {
-		t.Fatalf("expected no command for plain text paste")
-	}
-	if got := m.Value(); got != "hello" {
-		t.Fatalf("expected value 'hello', got %q", got)
-	}
-	if len(m.textarea.GetAttachments()) != 0 {
-		t.Fatalf("expected no attachments for plain text paste")
-	}
-}
-
-func TestPlainPathPng_AttachesImage(t *testing.T) {
-	m := newTestEditor()
-	// Minimal bytes; content isn't validated, extension determines mime
-	p := createTempBinFile(t, "", "img.png", []byte{0x89, 'P', 'N', 'G'})
-
-	_, cmd := m.Update(tea.PasteMsg(p))
-	if cmd == nil {
-		t.Fatalf("expected command to be returned for image path paste")
-	}
-	if _, ok := cmd().(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg for image path paste")
-	}
-	atts := m.textarea.GetAttachments()
-	if len(atts) != 1 {
-		t.Fatalf("expected 1 attachment, got %d", len(atts))
-	}
-	if atts[0].MediaType != "image/png" {
-		t.Fatalf("expected image/png mime, got %q", atts[0].MediaType)
-	}
-	if v := m.Value(); !strings.HasSuffix(v, " ") {
-		t.Fatalf("expected trailing space after attachment, got value: %q", v)
-	}
-}
-
-func TestPlainPathPdf_AttachesPDF(t *testing.T) {
-	m := newTestEditor()
-	p := createTempBinFile(t, "", "doc.pdf", []byte("%PDF-1.4"))
-
-	_, cmd := m.Update(tea.PasteMsg(p))
-	if cmd == nil {
-		t.Fatalf("expected command to be returned for pdf path paste")
-	}
-	if _, ok := cmd().(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg for pdf path paste")
-	}
-	atts := m.textarea.GetAttachments()
-	if len(atts) != 1 {
-		t.Fatalf("expected 1 attachment, got %d", len(atts))
-	}
-	if atts[0].MediaType != "application/pdf" {
-		t.Fatalf("expected application/pdf mime, got %q", atts[0].MediaType)
-	}
-	if v := m.Value(); !strings.HasSuffix(v, " ") {
-		t.Fatalf("expected trailing space after attachment, got value: %q", v)
-	}
-}
-
-func TestCompletionFiles_InsertsAttachment_EmitsMsg(t *testing.T) {
-	m := newTestEditor()
-	p := createTempTextFile(t, "", "c.txt", "hello")
-	m.textarea.SetValue("@")
-
-	item := completions.CompletionSuggestion{
-		ProviderID: "files",
-		Value:      p,
-		Display:    func(_ styles.Style) string { return p },
-	}
-	// Build the completion selected message as if the user selected from the dialog
-	msg := dialog.CompletionSelectedMsg{Item: item, SearchString: "@"}
-
-	_, cmd := m.Update(msg)
-	if cmd == nil {
-		t.Fatalf("expected command to be returned")
-	}
-	if _, ok := cmd().(AttachmentInsertedMsg); !ok {
-		t.Fatalf("expected AttachmentInsertedMsg from files completion selection")
-	}
-	if len(m.textarea.GetAttachments()) != 1 {
-		t.Fatalf("expected 1 attachment inserted from completion selection")
-	}
-	if v := m.Value(); !strings.HasSuffix(v, " ") {
-		t.Fatalf("expected trailing space after attachment, got value: %q", v)
-	}
-}
diff --git a/packages/tui/internal/tui/tui.go b/packages/tui/internal/tui/tui.go
index 1899df351..6a56e2012 100644
--- a/packages/tui/internal/tui/tui.go
+++ b/packages/tui/internal/tui/tui.go
@@ -382,9 +382,6 @@ func (a Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		a.app.Messages = []app.Message{}
 	case dialog.CompletionDialogCloseMsg:
 		a.showCompletionDialog = false
-	case chat.AttachmentInsertedMsg:
-		// Close completion dialog when the editor inserts an attachment
-		a.showCompletionDialog = false
 	case opencode.EventListResponseEventInstallationUpdated:
 		return a, toast.NewSuccessToast(
 			"opencode updated to "+msg.Properties.Version+", restart to apply.",