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The editor

Oleafly’s editor is built on CodeMirror 6 and tuned for LaTeX. Line numbers, soft wrapping, bracket matching, and an active-line highlight are always on; everything else on this page is a click or a shortcut away.

Shortcuts below show the macOS key first; on Windows and Linux, read ⌘ as Ctrl.

The toolbar

Section titled “The toolbar”

A formatting toolbar sits above every .tex-family file, left to right:

  • Undo (⌘Z) and Redo (⌘⇧Z)
  • Heading menu: inserts \part, \chapter, \section, \subsection, \subsubsection, or \paragraph
  • Bold (⌘B): wraps the selection in \textbf{…}
  • Italic (⌘I): wraps the selection in \textit{…}
  • Insert link: \href{}{}
  • Add citation: opens the citation lookup (DOI, arXiv, or title)
  • Insert cross-reference: \ref{}
  • Insert figure: a complete figure float with \includegraphics, \centering, and \caption
  • Insert table: a table float with a starter tabular
  • Insert list menu: bulleted (itemize) or numbered (enumerate)
  • Code intelligence menu: go to definition, find references, rename symbol (see Code intelligence)
  • Find (⌘F): opens find and replace

The same inserts, plus Ask AI and Generate figure from selection, live in the right-click menu, so nothing requires a trip to the top of the screen.

With ⌘B and ⌘I, the cursor lands inside the braces when nothing is selected, so you can keep typing without repositioning.

Find and replace

Section titled “Find and replace”

Press ⌘F for a VSCode-style widget in the top-right corner of the editor:

  • Match case (Aa), whole word (ab), and regular expression (.*) toggles
  • A live match counter (3 of 41), with No results and Invalid states, capped at 2000+ for huge documents
  • Enter jumps to the next match, Shift+Enter to the previous, Esc closes
  • Select all matches turns every match into a cursor for simultaneous editing
  • The chevron expands the Replace row: replace next, replace All, and a Preserve case toggle that maps the original token’s casing onto the replacement (so replacing figure with image also turns Figure into Image)

Code folding

Section titled “Code folding”

Click the arrow in the gutter to collapse a \begin…\end environment (nesting-aware) or a section (it folds until the next section of the same or higher level). Perfect for getting a 40-page chapter out of the way while you edit the conclusion.

Multi-cursor and block selection

Section titled “Multi-cursor and block selection”

The editor supports multiple selections: Alt-drag for a rectangular (column) selection, and Select all matches in the find widget for one cursor per match. Every cursor types, deletes, and pastes together.

Indentation and brackets

Section titled “Indentation and brackets”

Four-space indent unit with auto-indent as you type. Tab indents (or accepts the open autocomplete suggestion). Brackets and quotes auto-close, backspace removes pairs together, and the matching bracket highlights at the cursor.

Vim mode

Section titled “Vim mode”

Settings, General, Vim mode (or run “Enable vim mode” from the ⌘K palette) switches on full Vim keybindings: hjkl, operators and text objects (dd, ciw), :w, visual mode, the lot. It applies live, no restart, and all the Oleafly shortcuts on this page keep working alongside it.

The built-in LaTeX linter

Section titled “The built-in LaTeX linter”

The editor checks structural problems as you type, before any compile:

  • \end{itemize} without a matching \begin, or mismatched pairs (expected \end{figure}, got \end{table})
  • Unclosed environments
  • Duplicate \label{} keys
  • An odd number of $ on a line (almost always a forgotten math delimiter)

Errors get red squiggles, warnings amber, with markers in the gutter. Compile errors from the actual LaTeX run appear separately in the Logs pane, and Preflight adds its own source-level checks inline.

Word count

Section titled “Word count”

Run Word count from the ⌘K palette for words, characters, and lines in the active file.

More than .tex

Section titled “More than .tex”

Files open with highlighting matched to their extension: BibTeX, Markdown, JSON, YAML, TOML, CSS, shell scripts, and more. Images and PDFs open as rendered views instead of text, and binary formats are protected from accidental corruption; see Files & folders.

Section titled “Related pages”