Scenario: Add support for hyperlinks

[zadjii-msft]

This is the the megathread for tracking all the remaining work that needs to be done for hyperlink support in Terminal.

"Soon" Timeframe

• Original issue: Add support for OSC 8, Hyperlink, to the console infrastructure #204 -> added in OSC 8 support for conhost and terminal #7251
• Allow file:// URIs -> added in Support the "file" URI scheme #7526
• [DISCUSSION] Allow more URI schemes #7562 Allow other URI schemes
• Render hyperlinks differently from regular text in Terminal -> added in Display URI tooltip, render dashed/solid underline for links #7420
• Hover underline text that have the same hyperlink ID and display the URI -> added in Display URI tooltip, render dashed/solid underline for links #7420
• Display a content dialog box for URIs we cannot parse/schemes we do not support -> added in Open up content dialogs for invalid URIs and unsupported schemes #7523
• Design Clickable Links & Link preview feature/extension #574 Add support for Terminal to auto-detect hyperlinks -> added in Add support for autodetecting URLs and making hyperlinks #7691
• Change pointer when hovering over a link #7563 Switch the pointer to the 👆 icon when we're hovering a link (in the clickable state, like with ctrl pressed)
• VtEngine::_SetHyperlink uses fmt::format to render the hyperlinks, and it should really use _WriteFormattedString
• Add hyperlink support to conhost #7564 Hook up hyperlinks to conhost (rendering + clicking)
• Include hyperlinks in HTML copy #7565 Make sure hyperlinks are included in HTML copy
• Only underline hyperlinks on hover #8123 Only underline hyperlinks on hover -> added in Make the link underline less obtrusive; don't use it for pattern #8148
• Controlling tooltip delay for URLs Controlling tooltip delay for URLs #8242
  • Abandoned, platform limitation
• Add a setting to disable auto detection of links (in PR v1.4.3141.0 show Windows Terminal (Preview) when right clicked on Task Bar #8239)
  • Abandoned, we're not sure anyone actually ever wanted this
• Links/URLs get offset when certain unicode characters are printed Links/URLs get offset when certain unicode characters are printed #8709
• URL hover doesn't work when VT mouse mode is enabled #9117
• Keyboard navigation of clickable link #6649
• IPv6 links can not be Ctrl+Clicked #11901

Backlog

• Add a setting to configure the regex used to detect patterns
• Allow "hyperlink" matching for arbitrary patterns and adding custom handlers  #8849
  • Theoretically, this could supersede [DISCUSSION] Allow more URI schemes #7562
  • Should be self-consistent with Add a setting to configure display of auto detected links, normally and on hover #8294
• Control the styling of hyperlinks - attributes used for autodetected hyperlinks, and then different attributes for hovered ones Add a setting to configure display of auto detected links, normally and on hover #8294
• Feature Request: link generation for files + other data types #2671

References

• This VsCode issue has an enormous set of references to improvements they've made: Test: Terminal link improvements vscode#172084
• Spec for Triggers and Custom Clickable Links #15700

[DHowett]

Proposed order of attack:

• Hover tooltip
• Rendering -- possibly simple rendering w/ a new underline style for me?
• Take a break, regroup, think about the design for autodetection
• (possibly work on other things in the meantime)
• Autodetection