v0.2.7

App-owned slash menus with icons and groups, @ mentions, painted fences, app link cards and any-scheme links, searchable submenus, block caret height, and grey hairlines.

New

• editor::AppExt::set_slash_items replaces the slash menu's items, which are editor::slash_defaults() until it is called. A SlashItem is a Row(SlashRow) with a label, optional icon and SlashAction, or a Group of rows behind a submenu with its own icon. SlashAction::Block turns the block into a BlockKind; SlashAction::Run hands the app a SlashAt with the editor and block index.
• The default slash rows carry block glyphs, with quotes and callouts behind one Quote group. A query ranks rows across groups; a group with several matches stays a submenu and a lone match stands as its own row.
• Chrome::mention turns on an @ menu over the rows from editor::AppExt::set_mention_source. Picking a Mention replaces @query with a chip linking its URL.
• markdown::BlockRenderer receives a Fence with its language, code and an optional rewrite that writes new code as an undoable edit. Painted fences sit inside PAINTED_CONTEXT, so keys typed into their controls stay there; LeaveBlock returns focus to the document. Editing::fence takes a FenceHost, and Editor::set_code, Editor::place_block and Doc::set_code back it.
• markdown::AppExt::set_link_card installs a LinkCard painter for links the app owns, in place of the bookmark. LinkPreview::glyph paints an app icon where a favicon would go; a chip with one opens no hover card.
• Explicit links and autolinks accept any scheme:// URL. markdown::is_link tests for one; is_url still decides what bare text links itself as.
• Item::searchable opens a submenu with a focused query field that narrows its rows by label and description and scrolls past SEARCH_ROWS. ui::menu::init installs its keys; ui::menu::bindings returns them.
• ui::AppExt::set_caret_height makes block carets fill the line (CaretHeight::Line, the default) or stand as tall as the text (CaretHeight::Text).
• Theme::border_faint is the faintest hairline, and Theme::drop_target fills a pane docking preview when no material paints it.

Changed

• BlockRenderer takes &Fence instead of separate language and code arguments.
• Theme has border_faint and drop_target fields; struct literals must include them.
• Hairline ink is a light grey on dark and a dark grey on light instead of pure white or black.
• popover::divider, popover::menu_section and popover::dialog_field take &Theme.
• Canvas selection rings and handles are 1px in the theme's ring color instead of the accent.
• The pane docking preview is a thin material where materials are on, and Theme::drop_target otherwise.
• drag::Carry::host takes the origin the target draws the ghost at.
• gpui is updated to 0.3.16.

Fixed

• Enter at the start of a block moves the whole block down under an empty paragraph, so a heading keeps its level.
• Dropped drag items, including custom ghosts and tabs hosted by a dock, settle from where they were last drawn.