Tabs and undo
Dirty markers, per-tab undo, close others, close all, and drag reordering.
All editionsComplete feature index
Every tool.
Close at hand.
37 capabilities, grouped for scanning.
From folder-wide search and crash restore to column editing and a real per-tab terminal, this is the full Linelark 1.0 surface.
Read the documentationAreaCapabilityWhat it doesEdition
Editing
Precise operations without turning the file into a project.
Syntax highlighting
69 curated language definitions with language-aware comments and keywords.
All editionsEditor guides
Line numbers, current-line highlight, indent guides, and bracket matching.
All editionsTyping assistance
Auto-indent, paired brackets and quotes, selection wrapping, and block indent.
All editionsLine operations
Duplicate, delete, move, join, sort, deduplicate, and remove empty lines.
All editionsColumn editing
Rectangular selection with ⌥-drag and text or number sequences with ⌥⌘C.
All editionsComments and case
Line and block comment toggles, case conversion, and trailing-space cleanup.
All editionsWord completion
Complete nearby identifiers and language keywords with ⌃Space or ⌥Esc.
All editionsDocument navigation
A colour-aware document map and bookmarks toggled from the gutter.
All editionsViewing and output
Word wrap, visible whitespace and EOLs, zoom, overwrite mode, and printing.
All editionsFiles and formats
Keep the bytes, line endings, and language identity intact.
Files and folders
Open one file or a folder with tree, open-file, function, and search views.
All editionsEleven encodings
UTF-8, UTF-16, Latin-1, Windows code pages, Mac Roman, Japanese encodings, and ASCII.
All editionsReinterpret encoding
Correct a mistaken encoding before saving or converting the document.
All editionsLine endings
Detect and preserve LF, CRLF, or CR, with explicit conversion from the menu.
All editionsLanguage detection
Recognise extensions, whole filenames such as Makefile, and shebang lines.
All editionsExternal changes
Detect on-disk edits and reload clean tabs when the file changes elsewhere.
All editionsSession restore
Bring back layouts, tabs, untitled documents, and unsaved edits after quit or crash.
All editionsFast tab access
Jump to the first nine tabs with ⌘1–⌘9.
All editionsSearch
Move from a single match to an entire folder without losing context.
Find and replace
Match case, whole word, regular expressions, wrap-around, and selection scope.
All editionsRegex replacement
Reuse capture groups with $1-style replacement references.
All editionsMark and count
Count matches, highlight every occurrence, and clear marks independently.
All editionsFind in Files
Search the open folder with file filters and click a result to open it.
All editionsReplace in Files
Preview exact file and match counts before writing while preserving file formats.
All editionsPanes
Arrange relationships between files, not just windows.
Four layouts
Use two or three columns, two rows, or a four-pane grid with draggable dividers.
All editionsDrag between panes
Move a tab directly from one pane strip to another.
All editionsShared-buffer views
Open one file in several panes with shared text and independent scroll positions.
All editionsKeyboard pane control
Move focus or send the active tab between panes from the keyboard.
All editionsLayout restore
Restore the pane arrangement and its tabs when the app relaunches.
All editionsStudio terminal
A real shell that belongs to the current tab.
One shell per tab
Start a login shell in the folder containing the tab’s file.
StudioInteractive xterm
Run full-screen programs with mouse reporting, 256 colours, and true colour.
StudioFinder-ready PATH
Use the login environment even when Linelark starts from Finder.
StudioFile-aware shell
Read the current file path from $LINELARK_FILE in each terminal session.
StudioClaude Code handoff
Opt in to a SessionStart hook that supplies the active file path.
StudioAppearance
Native controls and deliberate themes for long sessions.
System appearance
Choose Light, Dark, or Follow System at any time.
All editionsFive themes
Paper, Mist, Midnight, Tide, and Plum are original high-contrast palettes.
All editionsEditor settings
Choose a monospaced font, size, tab width, and individual editor toggles.
All editionsMac support
Runs natively on macOS 14 or newer, on Apple silicon and Intel.
All editions