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Function `std.uni.toUpperSpecial`

Converts s to uppercase using locale-aware special casing rules from Unicode 3.13 Section 3.13. Unlike toUpper, this function handles conditional casing rules that depend on surrounding context and language, such as:


						
				string toUpperSpecial(
				
  string s,
				
  CasingLanguage lang
				

				) @trusted;

Turkish/Azeri: lowercase i (U+0069) uppercases to dotted capital I (U+0130), and dotless i (U+0131) uppercases to plain I (U+0049).

The existing toUpper handles only the unconditional mappings from SpecialCasing.txt. This function adds the conditional rules that require knowledge of the preceding and following characters.

Parameters

Name	Description
s	the string to convert
lang	the language context to use for language-sensitive rules

Returns

A newly allocated string with the locale-aware uppercase mapping applied.

Authors

Dmitry Olshansky

License

Boost License 1.0.