google.appengine.api.search.unicode_util.LimitUnicode

Replaces 32-bit Unicode characters with surrogate pairs.

google.appengine.api.search.unicode_util.LimitUnicode(
    s
)

Returns a version of the string argument with all Unicode characters above 0xFFFF (those from the Supplementary Plane) replaced with the appropriate surrogate pairs. If there are no such characters, returns the same string instance.

See https://wikipedia.org/wiki/UTF-16#U.2B10000_to_U.2B10FFFF

Args
s	a string, possibly of unicode type, to be converted if necessary.

Returns
Unicode string with surrogate pairs, or the argument unmodified.