fmt hyperlinked CLI text

[lionel-rowe]

Is your feature request related to a problem? Please describe.

A function for creating hyperlinked text to print to CLI output (see Hyperlinks (a.k.a. HTML-like anchors) in terminal emulators).

Not sure whether this should go under fmt/colors or a new fmt/ansi. fmt/colors makes most sense to me given it already contains various formatting functionality that doesn't strictly relate to color.

Example:

console.log("\x1B]8;;https://deno.land\x07Deno dot land\x1B]8;;\x07")

^ prints in CLI console as Deno dot land.

Describe the solution you'd like

Something like this:

export function hyperlink(text: string, url: string | URL) {
    return `\x1B]8;;${url}\x07${text}\x1B]8;;\x07`
}

Describe alternatives you've considered

• What should NO_COLOR output be? Maybe a markdown equivalent like [Deno dot land](https://deno.land)? Edit: or maybe not, this could easily break layouts. Probably best to just print the text without the hyperlink.
• This feature isn't supported by all TTY environments — is there some way of feature detecting it? (Probably not). Per the gist linked above, all ECMA-48-compliant terminals that don't implement the feature simply fall back to showing the text with no hyperlink.

[kt3k]

The support of that special sequence seems a bit too limited?

In spring 2017, GNOME Terminal and iTerm2 have changed this.

There seem no support on windows, and also default terminal of mac doesn't seem supporting?

[lionel-rowe]

Windows Terminal supports it. Not sure about macos and don't have access to a mac device to find out.

[kt3k]

Windows Terminal supports it.

👍

Not sure about macos and don't have access to a mac device to find out.

I tested with Terminal.app (the default one in mac), and it doesn't seem supporting it.

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On the other hand, I found that the builtin terminal of VSCode seems supporting it.

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Maybe Terminal.app is exceptional about the support of this..

[kt3k]

Note: Warp doesn't support this. WezTerm and kitty do support this.