emacs:highlight the current line by underline it.

Question

In vim, we can use "set cursorline" in dotvim file to turn it on. Is there a way to do this in emacs?

Answer 1

I don't think there's an exact equivalent built in. You can use hl-line-mode to highlight the current line, and customising that mode lets you set the highlighting to be underlining rather than the default different background colour -- but the underline you get stops at the end of the text in the line, rather than continuing to the edge of the window.

Answer 2

In your .emacs, customize the face for hl-line-mode, with something like:

(global-hl-line-mode 1)
(set-face-attribute hl-line-face nil :underline t)

hl-line-face is a variable that stores the name of the face hl-line-mode uses to show the current line. You can customize the :foreground :background and a bunch of other attributes to your liking. Check the docs here.

The global-hl-line-mode turns on highlighting the current line in all buffers. If you just want it in some buffers, turn it on with M-x hl-line-mode.