Body without trailing whitespace
Script family (drives the terminator glyph)
Optional total grapheme budget the result must fit in
Optionallang: stringOptional language code for Korean-specific handling
Body + terminator, never longer than maxLength when given
Append a script-appropriate terminator to
trimmed, shrinking the body first whenmaxLengthwould otherwise be exceeded. The trim preserves whole graphemes (Array.from) so CJK/RTL clusters are never cut mid-codepoint, and trailing dangling separators are scrubbed before stapling the terminator so we don't emit… —.artefacts.