strconv: add QuoteToGraphic and friends
This version of quoting allows runes in category Zs, such as the
ideographic space characters, to be passed through unquoted.
Still to do (maybe): A way to access this from Printf.
Updates #11511.
Change-Id: I3bae84b1aa0bc1b885318d3f67c5f451099a2a5a
Reviewed-on: https://go-review.googlesource.com/14184
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
diff --git a/src/strconv/isprint.go b/src/strconv/isprint.go
index 0cf363c..20a02de 100644
--- a/src/strconv/isprint.go
+++ b/src/strconv/isprint.go
@@ -635,3 +635,23 @@
0xf57a,
0xf5a4,
}
+
+// isGraphic lists the graphic runes not matched by IsPrint.
+var isGraphic = []uint16{
+ 0x00a0,
+ 0x1680,
+ 0x2000,
+ 0x2001,
+ 0x2002,
+ 0x2003,
+ 0x2004,
+ 0x2005,
+ 0x2006,
+ 0x2007,
+ 0x2008,
+ 0x2009,
+ 0x200a,
+ 0x202f,
+ 0x205f,
+ 0x3000,
+}
