Avoid using · character

[mbovel]

[test_windows_full]

Joint work with @nicolasstucki

[mbovel]

@nicolasstucki well that wasn't the problem. Same test failing:

Do you still want to merge this PR?

[nicolasstucki]

Using only ASCII characters seems better at this stage. I would merge this change.

[mbovel]

Minor: looking at the output again, it's not evident that ----------- denotes a more important line than - - - - - -. Maybe we could use = and - à la Markdown? Feels more standard to me.

|------------------------------
|
| Dash and Dash-space
|
|- - - - - - - - - - - - - - -
|
|
|

|==============================
|
| Equal and Dash
|
|------------------------------
|
|
|