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@ -50,6 +50,42 @@ BASE_VAR = """\
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}
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"""
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LOCAL_BASE_VAR = """\
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:root, [lang]:where(:not(:lang(zh, ja, ko))) {
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--vp-font-family-base:
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'Inter', BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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"""
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# From https://github.com/tats-u/yu-othic-css/ v1.0.0
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# (officially donated by its author)
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YU_GOTHIC_WEIGHT_FIXED = """\
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@font-face {
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font-family: 'Yu Gothic Weight Fixed';
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font-weight: 200;
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src: local('Yu Gothic Light');
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}
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@font-face {
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font-family: 'Yu Gothic Weight Fixed';
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font-weight: 300;
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src: local('Yu Gothic Regular');
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}
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@font-face {
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font-family: 'Yu Gothic Weight Fixed';
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font-weight: 400;
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src: local('Yu Gothic Medium');
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}
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@font-face {
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font-family: 'Yu Gothic Weight Fixed';
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font-weight: 600;
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src: local('Yu Gothic Bold');
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}
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"""
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# The 'Inter Core' faces leave the `cjkExclusions` characters uncovered so that
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# they fall through to the next family in the stack, which therefore must be
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# an explicit CJK font: a Latin system font (or `sans-serif`) would claim most
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@ -62,13 +98,11 @@ BASE_VAR = """\
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# cascade list and walks that list with each font's full character map, which
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# on macOS 26 / iOS 26 hands the symbols missing from the reduced PingFang
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# (U+FF5C, ①, ★, ※, ...) to Apple Symbols or the Japanese UI font at a
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# single weight. The CJK_FALLBACK_ANCHOR faces route them through the
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# language-aware system fallback instead. Bare zh means Hans per BCP 47
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# likely subtags, and with no Traditional Chinese rule it also covers
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# zh-Hant/zh-TW/zh-HK/zh-MO pages. If Hant handling is ever requested, add
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# after the zh rule (same specificity, so the later rule wins; the region
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# tags must be enumerated because `:lang(zh-Hant)` cannot match e.g.
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# `lang="zh-TW"`):
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# single weight. Bare zh means Hans per BCP 47 likely subtags, and with no
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# Traditional Chinese rule it also covers zh-Hant/zh-TW/zh-HK/zh-MO pages.
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# If Hant handling is ever requested, add after the zh rule (same specificity,
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# so the later rule wins; the region tags must be enumerated because
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# `:lang(zh-Hant)` cannot match e.g. `lang="zh-TW"`):
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# [lang]:where(:lang(zh-Hant), :lang(zh-TW), :lang(zh-HK), :lang(zh-MO)) {
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# --vp-font-family-base:
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# 'Inter Core', 'PingFang TC', 'Microsoft JhengHei', 'Noto Sans CJK TC',
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@ -78,23 +112,57 @@ BASE_VAR = """\
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CJK_BASE_VAR = """\
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[lang]:where(:lang(zh)) {
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--vp-font-family-base:
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'Inter Core', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',
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'Segoe UI Symbol', 'Noto Color Emoji';
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'Inter Core', 'PingFang SC', 'Noto Sans CJK SC', 'Noto Sans SC', 'Microsoft YaHei',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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/* Traditional Chinese */
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/* https://github.com/unicode-org/cldr-json/blob/main/cldr-json/cldr-core/supplemental/likelySubtags.json */
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/* Tentative: for regions that belong to neither PRC nor ROC, leave Chinese fonts to the user. */
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/* :lang(zh-[REGION]) matches zh-Hans-[REGION], which is unwanted, so we prefer [lang|=zh-[REGION]] instead. */
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[lang]:where(:lang(zh-Hant)), [lang|=zh-AU i], [lang|=zh-BN i], [lang|=zh-GB i], [lang|=zh-GF i], [lang|=zh-ID i], [lang|=zh-PA i], [lang|=zh-PF i], [lang|=zh-PH i], [lang|=zh-SR i], [lang|=zh-TH i], [lang|=zh-US i], [lang|=zh-VN i] {
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--vp-font-family-base:
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'Inter Core', BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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/* We can't cover cases that don't contain region subtag but contain extension subtags, such as -t-en due to CSS's limitation as of 2026-09 */
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[lang=zh-Hant i], [lang|=zh-TW i], :lang(zh-Hant-TW, zh-Bopo, zh-Hanb) {
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--vp-font-family-base:
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'Inter Core', 'PingFang TC', 'Noto Sans CJK TC', 'Noto Sans TC', 'Microsoft JhengHei',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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[lang]:where(:lang(zh-Hant-HK)), [lang|=zh-HK i] {
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/* Microsoft JhengHei is optimized for Taiwan, so we should not prioritize it for PRC regions */
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--vp-font-family-base:
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'Inter Core', 'PingFang HK', 'Noto Sans CJK HK', 'Noto Sans HK',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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[lang]:where(:lang(zh-Hant-MO)), [lang|=zh-MO i] {
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/* A Macao variant for Noto Sans CJK / Source Han Sans has not been released yet as of 2026-09. */
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--vp-font-family-base:
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'Inter Core', 'PingFang MO', 'PingFang HK', 'Noto Sans CJK HK', 'Noto Sans HK',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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[lang]:where(:lang(ja)) {
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--vp-font-family-base:
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'Inter Core', 'Hiragino Sans', 'Meiryo', 'Yu Gothic', 'Noto Sans CJK JP',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',
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'Segoe UI Symbol', 'Noto Color Emoji';
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'Inter Core', 'Hiragino Sans', 'Noto Sans CJK JP', 'Noto Sans JP', 'Yu Gothic Weight Fixed', 'Meiryo',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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[lang]:where(:lang(ko)) {
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--vp-font-family-base:
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'Inter Core', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Noto Sans CJK KR',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',
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'Segoe UI Symbol', 'Noto Color Emoji';
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'Inter Core', 'Apple SD Gothic Neo', 'Noto Sans CJK KR', 'Noto Sans KR', 'Malgun Gothic',
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BlinkMacSystemFont, sans-serif, 'Apple Color Emoji',
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'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
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}
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"""
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@ -290,8 +358,9 @@ def write_css(subsets: dict[str, str], cjk_exclusions: set[int]) -> None:
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+ "\n".join(inter)
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+ "\n"
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+ "\n".join(cjk)
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+ f"\n{YU_GOTHIC_WEIGHT_FIXED}"
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+ f"\n{CJK_FALLBACK_ANCHOR}"
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+ f"\n{BASE_VAR}\n{CJK_BASE_VAR}"
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+ f"\n{LOCAL_BASE_VAR}\n{CJK_BASE_VAR}"
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)
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Tatsunori Uchino
3 days ago
committed by
GitHub