Sub PunctuationToNonBreakingEmDash()
' Paul Beverley - Version 27.05.22
' Changes next hyphen/em/en dash to a non-breaking em/en dash

myDash = ChrW(8212) ' em dash

trackit = True

searchChars = "-~" & ChrW(8211) & ChrW(8212) & ChrW(8722) & Chr(30)

myTrack = ActiveDocument.TrackRevisions
If trackit = False Then ActiveDocument.TrackRevisions = False
Set rng = Selection.Range.Duplicate
rng.End = ActiveDocument.Content.End
If Len(rng) > 1000 Then rng.End = rng.Start + 1000

For Each ch In rng.Characters
  If InStr(searchChars, ch.Text) > 0 Then
    ch.Select
    gotChar = True
    Exit For
  Else
  End If
  DoEvents
Next ch
If gotChar = False Then
  Beep
Else
  Selection.TypeText Text:=myDash & ChrW(8205)
End If
ActiveDocument.TrackRevisions = myTrack
End Sub