Under macOS Catalina 10.15.1, Using the standard "tree" command (as supplied by MacPorts), if at the Terminal prompt I `cd` to a folder and then execute `tree` there,  I get output like this:

    .
    ├── Activity\ Monitor.app
    ├── ApplicationsFolderIcon.icns
    ├── BBEdit.app
    ├── Backup
    │   ├── Backup\ and\ Sync\ from\ Google.app
    │   ├── Carbon\ Copy\ Cloner.app
    │   ├── Dropbox.app\ 
    │   ├── ForeverSave\ 2.app
    │   ├── Get\ Backup\ Pro\ 3.app

However, if I redirect the output to a text file, as in

    tree > myapps.txt

then I get wrong characters when I view the file in TextEdit:

    .
    ├── Activity\ Monitor.app
    ├── ApplicationsFolderIcon.icns
    ├── BBEdit.app
    ├── Backup
    │   ├── Backup\ and\ Sync\ from\ Google.app
    │   ├── Carbon\ Copy\ Cloner.app
    │   ├── Dropbox.app\ 
    │   ├── ForeverSave\ 2.app
    │   ├── Get\ Backup\ Pro\ 3.app

What's wrong?