Italic version: make the vertical pipe character actually vertical

[chtenb]

Description of the new feature/enhancement (with images if possible)

Now that we have a dedicated glyph set for the italics, can we fix the fact that the vertical pipe is tilted like a forward slash?

• As you see, when italics are used the pipe looks awkward.
• Vertical pipes are used in circumstances where they are supposed to sort of connect vertically, e.g. in ASCII tables
• It's inconsistent with other orthogonal shapes, like dashes etc, which aren't tilted either
• The vertical pipe may now be mistaken for a forward slash (this actually happened to me when someone else was reading code from my screen)