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After
% emacs -q
(split-window-right)
(scroll-bar-mode 0)
(fringe-mode 0)
there is still a pixel-wide line separating the two windows. What is this
line called, and how can I change its width and colour? Can I replace it with
a character such as |, as is used in the terminal?
What you want to change is called the right-divider. By default you'll just see a vertical line.
Whether the right divider is shown or not is controlled by a frame-parameter called window-divider, which you can change by evaluating
(window-divider-mode)
You can call M-xcustomize-variable for window-divider-default-right-width to change the default size, and M-xcustomize-face for window-divider to change its colour. Note that changing the face will also affect the bottom-divider appearance.
M-x customize-variable fringe-mode, and then customize the variables window-divider to match the color of your window background, and window-divider-right-width to 1, (both in the customization group window-divider, the bar is 'invisible'
This is the vertical-border. You can set it like this:
(set-face-foreground 'vertical-border "green")
I don't know if it's possible to set the width, any further customisation would probably be done using window-divider-mode which 'covers' the vertical-border when it is turned on.
