I'm not sure about this but I think all you need is

tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'

For example:

$ tree
.
├── file0
└── foo
    ├── bar
    │   └── file2
    └── file1

2 directories, 3 files
$ tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'
.
+-- file0
\-- foo
    +-- bar
    │   \-- file2
    \-- file1

2 directories, 3 files

Alternatively, you can use the --charset option (might be a GNU extension, I'm not sure):

$ tree --charset=ascii
.
|-- file0
`-- foo
    |-- bar
    |   `-- file2
    `-- file1

2 directories, 3 files

I'm not sure about this but I think all you need is

tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'

For example:

$ tree
.
├── file0
└── foo
    ├── bar
    │   └── file2
    └── file1

2 directories, 3 files
$ tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'
.
+-- file0
\-- foo
    +-- bar
    │   \-- file2
    \-- file1

2 directories, 3 files

Alternatively, you can use the --charset option:

$ tree --charset=ascii
.
|-- file0
`-- foo
    |-- bar
    |   `-- file2
    `-- file1

2 directories, 3 files

I'm not sure about this but I think all you need is

tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'

For example:

$ tree
.
├── file0
└── foo
    ├── bar
    │   └── file2
    └── file1

2 directories, 3 files
$ tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'
.
+-- file0
\-- foo
    +-- bar
    │   \-- file2
    \-- file1

2 directories, 3 files

I'm not sure about this but I think all you need is

tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'

For example:

$ tree
.
├── file0
└── foo
    ├── bar
    │   └── file2
    └── file1

2 directories, 3 files
$ tree | sed 's/├/\+/g; s/─/-/g; s/└/\\/g'
.
+-- file0
\-- foo
    +-- bar
    │   \-- file2
    \-- file1

2 directories, 3 files

Alternatively, you can use the --charset option (might be a GNU extension, I'm not sure):

$ tree --charset=ascii
.
|-- file0
`-- foo
    |-- bar
    |   `-- file2
    `-- file1

2 directories, 3 files