# Case Folding Properties # # This file is a supplement to the UnicodeData file. # It provides a case folding mapping generated from the Unicode Character Database. # If all characters are mapped according to the full mapping below, then # case differences (according to UnicodeData.txt and SpecialCasing.txt) # are eliminated. # # The data supports both implementations that require simple case foldings # (where string lengths don't change), and implementations that allow full case folding # (where string lengths may grow). Note that where they can be supported, the # full case foldings are superior: for example, they allow "MASSE" and "Maße" to match. # # All code points not listed in this file map to themselves. # # NOTE: case folding does not preserve normalization formats! # # For information on case folding, see # UTR #21 Case Mappings, at http://www.unicode.org/unicode/reports/tr21/ # # ================================================================================ # Format # ================================================================================ # The entries in this file are in the following machine-readable format: # # ; ; ; # # # The status field is: # C: common case folding, common mappings shared by both simple and full mappings. # F: full case folding, mappings that cause strings to grow in length. Multiple characters are separated by spaces. # S: simple case folding, mappings to single characters where different from F. # T: special case for uppercase I and dotted uppercase I # - For non-Turkic languages, this mapping is normally not used. # - For Turkic languages (tr, az), this mapping can be used instead of the normal mapping for these characters. # Note that the Turkic mappings do not maintain canonical equivalence without additional processing. # See the discussions of case mapping in the Unicode Standard for more information. # # Usage: # A. To do a simple case folding, use the mappings with status C + S. # B. To do a full case folding, use the mappings with status C + F. # # The mappings with status T can be used or omitted depending on the desired case-folding # behavior. (The default option is to exclude them.) # # =================================================================