The features — editing, search, LSP, git

01 · editing

Editing does not depend on where you are in the file.

Multiple carets and column selection

The buffer is a persistent Piece Table: text is not rewritten wholesale, it is assembled from pieces. So inserting at the start of an 800 MB file costs the same as inserting at the end.

Several carets at once, column (block) selection mode.
Smart indentation: tabs or spaces, auto-detected per file.
Bracket pair highlighting, block folding, bookmarks.
Practically free undo history on snapshots — instant rollback.

shard.hpp— ingest-pipeline

shard.hppingest.cpp

// metric sinks

void Shard::bindAll() {

sink_flush.reserve(64);

sink_merge.reserve(64);

sink_purge.reserve(64);

for (auto& s : sinks_)

s.bind(index_, "shard");

}

main↑2✓0⚠03 carets · 1,284 undo steps

Ln 41, Col 14UTF-8LFH

Line wrapping that does not break on a long line

A full soft-wrap engine with lazy layout on top of the text buffer: layout is computed only for the visible region, so a line of several million characters never freezes the interface.

soft wrap · lazy layout · smooth wheel zoom

Soft wrap

lazy layout

One zoom control

fit width · whole page

Column mode

multiple carets

Block folding

bookmarks

02 · search and replace

Regular expressions on RE2 — and project-wide search.

We do not write our own regex engine: RE2 gives predictable running time without catastrophic backtracking.

Find and replace

Full replace with regular expressions, in the selection or across the file.

Occurrence highlighting

The word under the cursor is highlighted across the visible text.

Project-wide search

Results grouped by file, with a jump straight to the line.

Multi-root workspaces

Several roots in one workspace — search covers all of them.

03 · syntax and language intelligence

Highlighting re-parses only what you changed.

tree-sitter and LSP instead of home-made parsers

Incremental parsing: highlighting does not slow down on a large file.
Languages: C, C++, Go, JavaScript, Python.
C/C++ diagnostics over LSP via clangd — enabled on demand.
Unreal Engine projects: .clangd is generated automatically.

limits, honestly

Go-to-definition, hover and completion over LSP are not implemented yet — they are planned.

ingest.cpp— ingest-pipeline

ingest.cppshard.hpp

112

size_t Ingest::run(span<const Row> rows) {

113

auto shard = pick(rows.front());

114

return shard.flush(rows, 0);

115

}

116

117

// only this body was re-parsed

clangd · diagnosticstoo many arguments to member function 'flush'declared: size_t flush(span<const T>)

main↑2✓0✕1clangd

Ln 114, Col 24UTF-8LFCPP

04 · git and changes

A commit is assembled where the text is edited.

On libgit2: change markers next to line numbers, a Source Control panel, per-hunk staging, side-by-side diff and an inline peek at the HEAD version.

ingest.cpp · diff— ingest-pipeline

ingest.cpp · diffSource Control

HEADingest.cpp

112 auto shard = pick(rows);

113 return shard.flush(rows, 0);

114}

115

116// metric sinks

working copy+1 −1

112 auto shard = pick(rows);

113 return shard.flush(rows);

114}

115

116// metric sinks

main↑2✓0⚠02 hunks · 1 staged

Ln 113, Col 1UTF-8LFCPP

05 · working with files

A file should not suffer because you opened it.

Saving is atomic: the disk always holds either the whole old version or the whole new one. An open file is locked across processes, and external changes are never applied silently.

Atomic (crash-safe) saving
Cross-process locking of the open file
Notification about external changes on disk
Recent files list
Multi-root workspaces
Open formats: nothing proprietary

06 · appearance

Two design directions, both themes, your fonts.

Slate — calm

radius 6 · row 24px

Graphite — dense

radius 3 · row 20px

Accent colours

your pick

Separate fonts

code · ui · panels

Window transparency

vibrancy · mica / acrylic

Document zoom

and PDF

07 · full list

In one table.

Wording is taken from the 0.4.x release description. If something is not in this table, it is not in the product.

Area	What exists today
Speed and large files	mmap opening from 100 MB, background line indexing, explicit Normal / LargeText / HugeSlice modes
Editing	Multiple carets, column selection, smart indentation with auto-detection, bracket pairs, folding, bookmarks, snapshot-based undo history
Line wrapping	Soft wrap with lazy layout on top of the buffer
Search	Fast search, find and replace with RE2, highlighting of the word under the cursor, project-wide search grouped by file
Syntax	tree-sitter: C, C++, Go, JavaScript, Python — incremental parsing
Language intelligence	LSP: C/C++ diagnostics via clangd, support for Unreal Engine projects
Data	CSV/TSV table mode: rainbow columns, pinned header, large line numbers
Markdown	Preview with Mermaid diagrams in the embedded web engine
Books and documents	WYSIWYG for EPUB, FB2, RTF: sheet, contents, serif typography, zoom. PDF: page thumbnails, text-layer extraction
Rich text	Headings, lists, alignment, links, images; export to PDF, saving to EPUB, FB2, RTF
Images	Built-in viewer, including correct SVG rendering
Git	Change markers, Source Control with commits, per-hunk staging, side-by-side diff, inline peek at HEAD (libgit2)
Appearance	Dark and light themes, Slate and Graphite directions, accent colours, separate fonts, window transparency
Zoom	One control at 50–400%, fit-width and whole-page modes, wheel zoom
Plugins	API in plain C ABI, SDK and template; eight plugins in the box
Files	Atomic saving, cross-process locking, external-change notification, recent files, multi-root workspaces

Everything that works in 0.4.x — no promises.

Editing does not depend on where you are in the file.

Multiple carets and column selection

Line wrapping that does not break on a long line

Regular expressions on RE2 — and project-wide search.

Find and replace

Occurrence highlighting

Project-wide search

Multi-root workspaces

Highlighting re-parses only what you changed.

tree-sitter and LSP instead of home-made parsers

A commit is assembled where the text is edited.

A file should not suffer because you opened it.

Two design directions, both themes, your fonts.

In one table.

Try it on your own file.