mongol-norm
Copyright (c) 2026 Satsrag Borzood

This product includes software and data derived from third-party sources.
Their notices are reproduced below as required by their licenses.

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mongfontbuilder
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The shaping rules in `src/rules.rs` are ported from mongfontbuilder's OpenType
shaping pipeline, and the data they run on (`python/mongol_norm/data/*.json`,
compiled into `src/generated/`) is generated from mongfontbuilder.
mongfontbuilder is distributed under the MIT License:

    MIT License

    Copyright (c) 2023-2025 Kushim-Jiang

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.

Source: https://github.com/Kushim-Jiang/mongfontbuilder

The `font` feature bundles the Hudum font mongfontbuilder composes
(`fonts/hudum.otf`, outlines removed; `fonts/mongfontbuilder.json` pins the
commit), with its OpenType Layout rules under the same MIT License.

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Noto Sans Mongolian (the bundled shaping font's source)
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`fonts/hudum.otf` is composed from mongfontbuilder's test source
`tests/fonts/hudum.ufo`, whose drawings derive from Noto Sans Mongolian. The
bundled font carries none of the drawings — only the layout tables — and keeps
the source's licence:

    Copyright 2023 The Noto Project Authors
    (https://github.com/notofonts/mongolian)

    This Font Software is licensed under the SIL Open Font License,
    Version 1.1. This license is available with a FAQ at:
    https://scripts.sil.org/OFL

    Noto is a trademark of Google Inc.

The licence text is in `fonts/OFL.txt`; `fonts/NOTICE.txt` describes the font.

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UTN #57 / Unicode
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The shaping rules also implement the algorithm described in Unicode Technical
Note #57 (v4), "Encoding and Shaping of the Mongolian Script". Unicode data and
technical materials are subject to the Unicode Terms of Use / Unicode License.

Source: https://www.unicode.org/notes/tn57/tn57-4.html
