Preedit (default)
ClassicBest for: widest compatibility
How it works
- The word shows inline with an underline and commits when the word ends.
A Vietnamese input method, rebuilt in Rust.
MăngRS is a Vietnamese input method engine for IBus, written in Rust on top of bamboo-core. It brings Telex, VNI, VIQR and the Microsoft layout together with a GTK4 settings window, macros, a custom dictionary and per-app rules.
Developed and tested on Arch Linux (IBus 1.5.34, GNOME 51, Wayland; X11 smoke-tested). Other distributions and desktop environments are not tested yet — IBus ≥ 1.5 and GTK4 are the only hard requirements.
Project
Latest version v0.1.2 · License MIT
Everything a Vietnamese typist needs.
Input methods
- Telex
- VNI
- VIQR
- Microsoft layout
Typing options
- Modern tone placement (hòa) or traditional (hoà)
- Free tone marking: hoangf → hoàng
- Spell check from a bundled 38,350-word list
- Auto-restore non-Vietnamese words
- Raw keys after / : @ . _ ~ = # & % ?
- w → ư, [ ] → ơ ư, -- → —
- Auto-capitalize and double space → period
- Macros with $TIME / $DATE expansion
Output charsets
- Unicode · Unicode NFD · TCVN3 · VNI · VIQR · VISCII · VPS · CP1258 · BKHCM · Vietware X · Vietware Full
Settings & quality
- GTK4 settings
- 6 tabs
- Hot reload
- JSON backup
- App rules
- 164 tests
Six ways to put Vietnamese on screen.
Non-preedit
ClassicBest for: Firefox, GTK apps
How it works
- Every key commits immediately; the tail is rewritten when a mark arrives.
Surrounding text
ClassicBest for: Sublime Text
How it works
- Non-preedit plus a check against the application's own text report.
Smooth
Uinput · X11Best for: terminals, quirky apps
How it works
- Raw keys are forwarded while typing; the Latin tail is erased with real Backspaces at word end.
Super Smooth
Uinput · X11Best for: fast typing
How it works
- Same as Smooth, without the safety check before rewriting the tail.
Select
Uinput · X11Best for: apps where Backspaces misbehave
How it works
- Shift+← selects the tail, Delete erases it, then the word commits.
The uinput modes need /dev/uinput and fall back to preedit wherever real-key injection cannot reach the application; on GNOME Wayland they resolve to preedit.
Install from source. Binary packages are not available yet.
One-line install
Downloads the source, builds it and installs it. Needs curl, Rust, IBus, GTK4 and sudo.
curl -fsSL https://raw.githubusercontent.com/fundokukiri/ibus-mangrs/dev/scripts/install-online.sh | shFrom source
Build the engine, then run the installer.
cargo build --release --features gui
./scripts/autoinstall.shEnable the input source
Restart IBus, then add Vietnamese → MăngRS in Settings → Keyboard → Input Sources. Switch layouts with Super+Space.
ibus restartBinary packages for Arch, Debian/Ubuntu and Fedora/openSUSE are not available yet. Full instructions live in docs/installation.md.
Free, open source, MIT licensed.
Get MăngRS.
Report a bug, request a feature, or help test it on your distribution.