Initial QSfera import

Server/vendor/github.com/clipperhouse/uax29/v2/graphemes/reader.go

@@ -0,0 +1,25 @@
+// Package graphemes implements Unicode grapheme cluster boundaries: https://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries
+package graphemes
+
+import (
+	"bufio"
+	"io"
+)
+
+type Scanner struct {
+	*bufio.Scanner
+}
+
+// FromReader returns a Scanner, to split graphemes per
+// https://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries.
+//
+// It embeds a [bufio.Scanner], so you can use its methods.
+//
+// Iterate through graphemes by calling Scan() until false, then check Err().
+func FromReader(r io.Reader) *Scanner {
+	sc := bufio.NewScanner(r)
+	sc.Split(SplitFunc)
+	return &Scanner{
+		Scanner: sc,
+	}
+}