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  1. Qt
  2. QTBUG-79902

QLocale: make fuller and more faithful use of the CLDR data

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Details

    • User Story
    • Resolution: Unresolved
    • P2: Important
    • 6.x
    • None
    • Core: Locales (i18n)
    • None

    Description

      There are various ways that we fail to use CLDR fully and faithfully. At least:

      • CLDR's date-time formatting is richer than ours
      • CLDR distinguishes number formatting for percentages from that for currencies and ordinary numbers
      • Some number formats have separators in a different pattern than the "thousands" pattern currently assumed
      • CLDR locales can have variants (e.g. POSIX variant of C and Valencian variant of Catalan)
      • Some fields that QLocaleData expects to store in a single QChar need a surrogate pair in at least some locales
      • CLDR has more distinctions than just singular/plural when it comes to varying the forms of texts

      The first two (at least) shall require incompatible API and behaviour changes.
      All shall require significant re-working of QLocale and its associated classes.

      Formatting of dates is handled rather clumsily between Q(Date|Time)+, QCalendar and QLocale. Some rationalisation of this following the addition of calendars (and the movement of some locale-specific data into the care of calendars rather than QLocale itself) shall likely be advantageous also.

      Adding support for percentages to our existing (currency and) number formatting will complicate the APIs (in QLocale, QString, QByteArray and likely others), making this a good moment to streamline the existing APIs as far as possible.

      All of the formatting-related aspects of this (and linked tasks) should be designed with an eye to eventual C++20 <format>-compatibility.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-89383 QLocale.toCurrencyString doesn't return the right value for negative values

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Technical task - A technical task. QTBUG-112909 Support all CLDR's various ways of naming time-zones

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-82831 Do byte-amount formatting less wrongly

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-67661 Inconsistencies of the behaviour of QLocale, and no respect to system's local

          • P4: Low - Would be nice to fix, but it's not very important.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-81371 When QLocale formats numbers, it only uses localised digits for base ten

          • P4: Low - Would be nice to fix, but it's not very important.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-75036 Qt Linguist UI wrongly says "Translate to English"

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-81343 QLocaleData::m_currency_rounding is unused

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-53811 QLocale::toString(double) ignores system settings for group separator (german)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-74287 QLocale::nativeCountryName does not use country information from locale object

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-75845 QLocale reads country from language.

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-84877 QLocale::system() uses short names of days and months for narrow formats

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-94460 QLocale's names for languages, scripts and territories don't match CLDR's en.xml's proper names

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-123872 time wrongly displayed in zh_TW locale

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-75110 Number.fromLocaleString is stricter than DoubleValidator

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-91351 QLocale::formattedDataSize() is implemented wrongly

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Task - A task that needs to be done. QTBUG-115743 Separate support for accounting and standard formatting of currencies

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Task - A task that needs to be done. QTBUG-70516 Extend Qt's support for CLDR date/time formatting

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open

          Task - A task that needs to be done. QTBUG-74286 Reimplement QLocaleData::stringTo(Uns|)LongLong() to take size of string

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Suggestion - Public suggestions QTBUG-95460 Support localized infinity and NaN representations

          • P4: Low - Would be nice to fix, but it's not very important.
          • Reported

          Suggestion - Public suggestions QTBUG-66115 Let (QString|QLocale)::toFloat ignore trailing non-digits

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open

          User Story - Created by Jira Software - do not edit or delete. Issue type for a user story. QTBUG-81050 Do number-formatting correctly

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          User Story - Created by Jira Software - do not edit or delete. Issue type for a user story. QTBUG-81053 Upgrade remaining single-UTF16-codepoint members of QLocaleData

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          User Story - Created by Jira Software - do not edit or delete. Issue type for a user story. QTBUG-81344 Clean up the CLDR-digestion python scripts

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Suggestion - Public suggestions QTBUG-64942 Provide a way to map QLocale::Country values to ISO 3166 country codes

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          For Gerrit Dashboard: QTBUG-79902
          # Subject Branch Project Status CR V
          288200,2 Ensure we use UTF-8 for the emitted QLocaleXML data file dev qt/qtbase Status: MERGED +2 0
          293934,10 Take number system into account in currency format look-up 5.15 qt/qtbase Status: MERGED +2 0
          294144,7 Change QLocale to use CLDR's accounting formats for currencies 5.15 qt/qtbase Status: MERGED +2 0
          294245,2 Ensure we use UTF-8 for the emitted QLocaleXML data file 5.15 qt/qtbase Status: MERGED +2 0

          Activity

            People

              Eddy Edward Welbourne
              Eddy Edward Welbourne
              Vladimir Minenko Vladimir Minenko
              Alex Blasche Alex Blasche
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