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ICU-11010 improve ucol_mergeSortkeys() API doc

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X-SVN-Rev: 36166
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Markus Scherer 2014-08-14 20:35:54 +00:00
parent bbefa308aa
commit bfb928d8dd
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icu4c/source/i18n/unicode/ucol.h
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@ -1111,6 +1111,17 @@ ucol_getUCAVersion(const UCollator* coll, UVersionInfo info);
*
* This is useful, for example, for combining sort keys from first and last names
* to sort such pairs.
* See http://www.unicode.org/reports/tr10/#Merging_Sort_Keys
*
* The recommended way to achieve "merged" sorting is by
* concatenating strings with U+FFFE between them.
* The concatenation has the same sort order as the merged sort keys,
* but merge(getSortKey(str1), getSortKey(str2)) may differ from getSortKey(str1 + '\uFFFE' + str2).
* Using strings with U+FFFE may yield shorter sort keys.
*
* For details about Sort Key Features see
* http://userguide.icu-project.org/collation/api#TOC-Sort-Key-Features
*
* It is possible to merge multiple sort keys by consecutively merging
* another one with the intermediate result.
*