Rift

This is a vim-like text editor.

I use this daily and primarily.

Implemented:

• Quite a lot more than the below items, I just haven't updated this in a while due to actually working on it.
• f/F/t/T character-find motions with N/n repeat
• D to delete to end of line
• {N}G to jump to line N
• Terminal scrollback buffer
• Highlight active split pane
• H in file explorer to toggle hidden (dotfile) visibility
• Plugin support for arbitrary language syntax grammars (register via Lua API)
• SQL syntax highlighting (tree-sitter)
• Alt key modifier support in keybindings
• Expanded plugin API: buffer metadata, navigation, richer event hooks
• Clipboard ring buffer with multi-entry history (configurable size via clipboard.size)
• System clipboard integration (read/write via arboard, shown in clipboard tooltip)
• clipboard.size setting and :clipboard command to view ring
• :luareload command to reload plugins without restarting
• Plugin system (Lua, with user-defined events)
• CLI args: -v/--version, +N jump to line, + jump to last line, +/pattern search on open, -c cmd run ex command on open
• o / O to open a new line below/above in normal mode
• Soft line wrapping (setlocal wrap, with highly optimized rendering)
• Messages buffer (:messages to view editor messages)
• Everything-is-a-buffer architecture (file explorer, undotree, terminal, etc. are all buffers)
• BOM stripping and correct UTF-8 decoding on file load
• Multi-width unicode character rendering
• Count indicator in command-line completion
• Command-line completion engine (commands, subcommands, settings, setting values, file paths)
• vertical and horizontal splits (:split, :vsplit)
• split navigation (Ctrl+W h/j/k/l), resize (</>/,/.), freeze
• split equalization (:equalize, Ctrl+W =) with split.equalize_proportional mode (equal vs. proportional redistribution)
• split moving (H/J/K/L to move pane in a direcion)
• terminal emulator (:terminal, via alacritty_terminal)
• change command (c, C)
• dot repeat (.)
• smart dirty indicator (tracks saved state in undotree)
• capital insert commands (I, A)
• Undotree preview with change-focused scrolling
• Fancy undotree (with colors and syntax highlighting)
• persistent buffer state across file switches (dirty, undotree, etc.)
• command and search history (with up/down navigation)
• File explorer (ranger-style: open, new, delete, rename, copy, toggle hidden, metadata, bulk ops)
• ^W to delete back a word in insert/command/search
• benchmarking infrastructure (buffer, render, search, movement, syntax, history, screen, job, input)
• Treesitter (bash, c, c++, c#, css, go, html, java, js, json, lua, markdown, php, python, ruby, rust, typescript, yaml, zig)
• Async treesitter highlighting on background thread
• threaded job manager for async operations
• smartcase search
• search index warming (background cache)
• streaming search with multiple engines
• granular movement (word, sentence, paragraph, big word)
• Character abstraction for proper unicode handling (not just u8/char)
• O(log N) byte/char length synchronization
• interval trees for syntax metadata
• input box component
• select view with scrolling
• operator pending mode (d, c, y with motions)
• search + replace
• Custom regex engine (monster-regex)
• Polling instead of blocking input
• Resizing
• Buffer next/previous/ls
• Notify clear and clear all
• setting and command descriptions
• make command pattern more like settings design pattern (this took way too long)
• Not a gap buffer anymore! We now use a rope with a piece table
• dirty rectangles
• :edit filename to open a new document (:e to reload from disk)
• Multi-document support
• setlocal for document-level settings
• dumb gutter to avoid recalcing unless total lines changes significantly
• crlf and lf support
• add redraw command
• component level dirty flags to avoid clearing and repopulating full layers
• line indexing improvements
• line numbers
• colorizing and themes
• status bar to indicate filename, dirty
• notification system
• parse bang commands and pass the number of bangs
• hook notifications up to actual errors and warnings
• buffer composition
• double buffer rendering
• layer system for rendering
• various settings
• command mode
• insert mode
• basic cursor movement
• Save File (async)
• Save As
• Open File
• Syntax highlighting
• Undo and redo with hybrid delta+checkpointing approach
• debug mode toggle

Todo:

• LSP
• registers + unified yank/paste/delete
• visual selection (v, V, Ctrl+V)
• macros (q{reg} / @{reg})
• text objects (iw, aw, i", a(, etc.)
• jump list (Ctrl+O / Ctrl+I)
• marks and jumps (m{a-z}, '{mark})
• change list (g; / g,)
• help manual
• .riftrc config file
• code folding (zf/zo/zc)
• operator pending improvements (indent, format, case, etc.)
• animations

Known issues:

• 4 byte unicode characters are not able to be inserted on windows (this is a crossterm issue on windows, idk man)

Fixed stuff (lightly tracked):

• TOCTOU Race Condition between file check and file open
• Gap Buffer uses a lot of unsafe. Write more debug asserts
• inefficient string construction wrap_text in render loop
• Ascii only operation
  • Renderer does not handle multibyte characters
  • cursor calculation does not account for multibyte characters
  • fix by using String instead of u8
  • Use unicode-width instead of assuming everything is a single char
• Allow multiline notifications
• Ensure all components use the theme system
• search doesn't close on successful search
• :e to reload a file clears highlights
• floating window components not matching theme bg/fg
• searching for non existent text is really slow
• undo preview does not autoload
• syntax highlighting not updated as typing occurs
• scroll fails on select_view beyond window
• commandline commands do not properly close commandline
• insert operations not grouped as undo transactions
• delete operations not grouped as undo transactions
• undotree initial position wrong
• terminal crashes when running interactive programs
• terminal open in split causes flicker
• notification padding wrong
• cursor does not move after typing a space in the terminal
• input boxes for file explorer not accepting input
• split rendering and navigation fixes
• clipboard tooltip not showing system clipboard on Wayland (missing wayland-data-control feature)
• search highlight offset wrong on non-ASCII characters
• operator pending mode blocking on certain key sequences
• file explorer entry duplication on recursive directory traversal
• terminal keybinding actions not bindable to other keys

Install

cargo install monster-rift

With syntax highlighting:

cargo install -F treesitter monster-rift