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Diffstat (limited to 'deps/icu-small/source/i18n/unicode/ucal.h')
| -rw-r--r-- | deps/icu-small/source/i18n/unicode/ucal.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/deps/icu-small/source/i18n/unicode/ucal.h b/deps/icu-small/source/i18n/unicode/ucal.h index 10d8bc5274..889a1ec51d 100644 --- a/deps/icu-small/source/i18n/unicode/ucal.h +++ b/deps/icu-small/source/i18n/unicode/ucal.h @@ -139,6 +139,19 @@ * For example, subtracting 5 days from the date <code>September 12, 1996</code> * results in <code>September 7, 1996</code>. * + * <p> + * The Japanese calendar uses a combination of era name and year number. + * When an emperor of Japan abdicates and a new emperor ascends the throne, + * a new era is declared and year number is reset to 1. Even if the date of + * abdication is scheduled ahead of time, the new era name might not be + * announced until just before the date. In such case, ICU4C may include + * a start date of future era without actual era name, but not enabled + * by default. ICU4C users who want to test the behavior of the future era + * can enable the tentative era by: + * <ul> + * <li>Environment variable <code>ICU_ENABLE_TENTATIVE_ERA=true</code>.</li> + * </ul> + * * @stable ICU 2.0 */ |