this post was submitted on 25 May 2026
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I'm surprised vim supports italics. Is there any terminal standard for that, like colors and bold text?
Apparently there are escape sequences for it; see my response to the parent post.
Even if there weren't, if a given terminal supported either the older Sixel or the newer KiTTY graphics protocol, it can outright display arbitrary images.
Mainline tmux doesn't support either protocol, though there's a fork that does do Sixel. They're using tmux, so I assume that that's not the route used.
I wouldn't be surprised if support comes from a plugin rather than Vim itself. Plugins can do a LOT in Vim.
Of course, Vim also has a crazy base feature set, so I guess I wouldn't be all that surprised if it did have base support.