String types that hold bmp-chars.
The type bmp-string
is a string that can hold bmp-chars, that is characters with code below #x10000
(that is 16-bit). This corresponds to the Basic Multilingual Plane of Unicode.
simple-bmp-string
is the simple version of bmp-string
, that is it is a simple-array of bmp-chars.
bmp-string
s use less memory than cl:character
strings (type text-string), but cannot hold supplementary characters (that is, characters with code #x10000
or greater).
bmp-string
was new in LispWorks 7.0. In LispWorks 6.1 and earlier versions text-string is similar to bmp-string
. However, in most cases where you use text-string you probably still want to use text-string (using its new meaning, covering all the Unicode range).
LispWorks User Guide and Reference Manual - 20 Sep 2017