• New Format menu for Markdown: Bold (⌘B) and Italic (⌘I) wrap the selection in Markdown markers or take them off, and Add Link (⌘K) turns the selection into a link, using a URL you have copied. Typing *, _, `, ~, [, ( or " over a selection wraps it instead of replacing it • Copying a task list from Reader as plain text now gives empty and checked box characters instead of an invisible placeholder • Links whose address contains parentheses, like Wikipedia's, and README badges are now styled as one link in the editor, and ⌘-click opens the full address • Save As and Duplicate keep a file's extension, such as .json or .sh, and its permissions, so a copy of a private key stays private

• Tab follows each file's indentation: spaces at the file's own width in a space-indented file, a tab otherwise, and always spaces in YAML. With several lines selected, Tab indents them and ⇧Tab outdents them • Invisible characters get a faint mark in the editor: zero-width spaces, byte-order marks, bidirectional controls, and no-break and full-width spaces. Control codes such as NUL and ESC show as dimmed symbols. Saving, copying and Find still see the original characters • ⌘-click a Markdown link in the editor to follow it the way Reader does: a #heading link scrolls to the heading, a link to a local file opens it, and a web link opens in your browser

• Reader shows task lists as checkboxes: items that start with [ ] or [x] get an empty or checked box in place of the bullet, and checked items are dimmed. In the editor, [ ] and [x] dim like list markers • Text files with no extension or an unfamiliar one, like Dockerfile, .gitignore, or SSH keys such as id_ed25519, now open as plain text from Open With and File ▸ Open. A binary file picked this way is refused with a short alert

• Files that mix line endings keep them: saving changes only the endings of lines you added or edited, and a save without edits leaves the file exactly as it was • On a Markdown heading line the caret now spans the heading's text, and on the last line after a heading it sits one line below instead of inside it

• YAML frontmatter at the top of a Markdown file is now recognized. The editor dims its fences and leaves the lines between them plain, with no Markdown styling • Reader shows frontmatter as a quiet header: the title on top, the other fields as rows. Long headers fold into "+N more" and long values into "more" — click to see the rest

Fixed the height and position of the caret on the last line