Format::parse reads what a Format writes: its digits, its decimal and
grouping separators (the system's included) and the locale's Latin
marks in an Arabic-Indic format, plus every digit set. parse_number is
Format::from_tag(locale).parse, so the decimal marks come from CLDR's
data alone and the hand-made table is gone.
A lone . in a comma locale is the decimal mark when it can't be
grouping (1.5, 0.250, 1234.5, .5); 1.234 and 1.234.567 stay grouped in
German. The same holds for , in a point locale. Percent signs and units
are documented as the caller's to strip.
Plural rules are looked up by language alone: CLDR's parent of sr-Latn
and zh-Hant is the root, whose only category is other, so sr-latn rows
were rejected. The baked data covers every CLDR locale (10 KB): plural
rules for he, ro, nb, ca, sk, th, ms and the rest, and decimal symbols
for nb-NO, sk-SK, bn-BD, ar-MA and English in Europe. Format applies a
Region's separators only where the system set them, and an empty
grouping separator writes none.
trn_plain writes counts in 0-9 without grouping, for documents and file
names. reset_format goes back to the system region. trn_decimal and
Format write infinities and NaN as CLDR does and take the other form.
Tests that don't set a format use en-US, not the machine's region. The
ICU4X crates are pinned to ~2.3, the minor version the data is for.
Region::decimal and grouping are None unless Windows' or macOS's own
settings set them, so the number locale's CLDR data decides otherwise.
A cleared Windows sThousand is no grouping. LC_ALL=C and LC_NUMERIC=C
(and the other LC_* variables) mean the C locale; only LANG=C gives way
to the preferred language.
Format writes integers, decimals and percentages for a Region on ICU4X's
decimal formatter: the locale's digits (Arabic-Indic in Egypt, Persian in
Iran) or Latin ones on request, its separators and grouping sizes (Indian
12,34,567), CLDR's percent patterns, and the region's own separators where
the system sets them. I18n::format holds the one trn, file_size and
measure use, the system region's until set_format.
Plural rules move from intl_pluralrules to ICU4X, and trn_decimal picks
the form from the digits shown (1.0 files, 1,5 файла).
The CLDR data (decimal symbols, digits, plural rules, percent patterns)
covers the shipped languages and their regional variants; data/generate.sh
rebuilds it.
I18n::file_size writes a byte count in steps of 1024 (KB or KiB) or 1000
(KB), with decimals per unit, no decimals from a given value up, a
smallest and largest unit, and bytes as B or in words. I18n::measure
writes any value with a unit template such as "{n} px". Unit names are
catalog rows in context `unit`, keyed by the English template, so a
translation can change the symbol and its spacing.
Reads any Unicode decimal digits, the locale's decimal mark plus ٫,
grouping by the locale's other mark, spaces, apostrophes or ٬ (threes
or Indian 2-2-3), and -/−/+ signs, ignoring bidi marks. Input that
fits no single reading is an error, not a guess.
Region holds the number and time locales, metric or US measurement, A4 or
Letter, the decimal separator, and the grouping separator and clock when
the system sets them. Region::system reads Windows' regional format with
the user's changes, Apple's current locale, the POSIX LC_* variables each
on their own, and the preferred language on the web and Android.
Region::from_setting takes an app's saved choice ("auto" or a tag).
Ported from WordCraft's Region (storytold/wordcraft#857, #1494).
Co-authored-by: Dmitrii Khlapov <dkhlapov@pm.me>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
Skylar's review of 886a0b3:
1. tc/tid go locale by locale: in each locale the context or @id row,
then the plain row, so pt-br's plain row beats pt's context row.
2. pt (and pt-* other than pt-br) uses pt-PT plural rules: 0 is plural.
3. A script subtag (sr-Latn-RS, sr_RS@latin, be_BY@latin) never picks a
code of another script; sr-Cyrl-RS still picks sr.
4. A row defined twice is reported and the first kept, as in the checker.
5. The pseudo locale is debug-only via from_code, get marks too, and
looked_up() lists what was looked up for an app's audit.
6. intl_pluralrules pinned to =7.0.2; plural_form_counts copied from the
checker, plus pt.
7. I18n::new takes the app's offered codes: languages(), from_code,
match_tag and system_lang only return those; others stay fallbacks.
Smaller: en/pseudo/repeated codes are skipped and reported,
system_lang is cached, zh-hant-hk falls back to zh-hant, rtl adds ckb,
dv, ps, sd, ug and yi.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Review fixes (CodeRabbit): a glibc @latin/@cyrillic modifier becomes the
script subtag and only codes with that script are tried. sys-locale
drops the modifier, so on desktop Unix system_lang reads LANGUAGE,
LC_ALL, LC_MESSAGES and LANG raw, in its order. README: tl! qualifies
CURRENT with $crate; get follows the locale chain but never the plain
row or English.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Final review fixes: a European Portuguese locale wins over pt-br when both
are embedded; sr-latn no longer falls back to Cyrillic sr; get() looks up
one context with no plain or English fallback (key-cap names).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01F9fM3mv1PUyKpk5rdwUQrW
aiongg
Martin BallandClaude Opus 5.5