On: Black: An uncompromising Python code formatter

[Izkata]

Also possibly a terminal text editor - the cursor sits on the column where the next character would be input (such as vim's insert mode). So with 79 character lines, the cursor is sitting at 80 while waiting for the next input.

If your screen is larger than that it's no big deal, but if your screen is 80 columns and the cursor was at column 81, it would wrap to the next line without actually being a newline.

[mappu → Izkata]

Also taking up a character, are ASCII-rendered scrollbars (like EDIT.COM and friends).

[samatman → Izkata]

Yes.

The old standard was actually 78, so that a diff would fit on the screen.