30 releases (7 breaking)

Uses new Rust 2024

0.9.3 Nov 25, 2025
0.9.1 Jul 24, 2025
0.5.1 Mar 28, 2025
0.2.1 Dec 31, 2024

#1651 in Command line utilities

GPL-3.0-only

1MB
15K SLoC

ASCA

ASCA is a Sound Change Applier written in Rust with WASM.

Repo for the web UI is here

Notable Features

  • Out of the box Distinctive Features and Alpha Notation
  • Manipulation of Syllables, Stress, and Tone
  • Cross Word-Boundary Interactions
  • Syllable Structure Matching
  • Left-to-Right and Right-to-Left Propagation
  • Metathesis and Hyperthesis (Long Range Metathesis)
  • Optional/Repeating Segments
  • References
  • Syntax which adheres to conventional standard notation
  • Digraph and Diacritic Support
  • Romanisation/Deromanisation

User guide can be found here.

Changelog

Cli

A cli specific user guide can be found here.

Installation

Precompiled binaries are available for Linux, Windows, and macOS. Add it to your path to have the asca command available in your terminal.

Alternatively, if you have Rust installed, asca can be installed with cargo.

cargo install asca

Dependencies

~4–7.5MB
~138K SLoC