Fix Terminal Character Bugs.

output.go

@@ -87,7 +87,7 @@ type parseState struct {
  vt100 rune
 }
 
-func (t *Terminal) handleOutput(buf []byte) {
+func (t *Terminal) handleOutput(buf []byte) []byte {
  if t.hasSelectedText() {
  t.clearSelectedText()
  }
@@ -100,14 +100,24 @@ func (t *Terminal) handleOutput(buf []byte) {
  size int
  r rune
  i = -1
+ cols = t.config.Columns
+ rows = t.config.Rows
  )
  for {
+ // check if terminal size has changed
+ if t.config.Columns != cols || t.config.Rows != rows {
+ break
+ }
+
  i++
  buf = buf[size:]
  r, size = utf8.DecodeRune(buf)
  if size == 0 {
  break
  }
+ if r == utf8.RuneError && size == 1 {
+ return buf
+ }
 
  if r == asciiEscape {
  t.state.esc = i
@@ -152,6 +162,7 @@ func (t *Terminal) handleOutput(buf []byte) {
  if t.state.esc != noEscape {
  t.state.esc = -1
  }
+ return buf
 }
 
 func (t *Terminal) parseEscState(r rune) (shouldContinue bool) {

term.go

@@ -271,8 +271,9 @@ func (t *Terminal) guessCellSize() fyne.Size {
 }
 
 func (t *Terminal) run() {
- bufLen := 4069
+ bufLen := 4096
  buf := make([]byte, bufLen)
+ var leftOver []byte
  for {
  num, err := t.out.Read(buf)
  if err != nil {
@@ -286,8 +287,12 @@ func (t *Terminal) run() {
  fyne.LogError("pty read error", err)
  }
 
- t.handleOutput(buf[:num])
- if num < bufLen {
+ if len(leftOver) > 0 {
+ buf = append(leftOver, buf[:num]...)
+ num += len(leftOver)
+ }
+ leftOver = t.handleOutput(buf[:num])
+ if num < bufLen+len(leftOver) {
  t.Refresh()
  }
  }