Returns a lowercase form of a given Unicode character.
ch | is the Unicode 11.0 code point to convert to the lowercase form. |
ch
, if any. If the lowercase form of ch
is not defined in the Unicode 11.0 code table, the function returns a copy of ch
.The function is conforms the Unicode 11.0 specification and uses a code table defined by the UnicodeData.txt file for Unicode 11.0.