go spec: import path implementation restriction
R=rsc, r, r, adg
CC=golang-dev
https://golang.org/cl/5688074
diff --git a/doc/go_spec.html b/doc/go_spec.html
index 6cc1b2c..797e403 100644
--- a/doc/go_spec.html
+++ b/doc/go_spec.html
@@ -1,6 +1,6 @@
<!--{
"Title": "The Go Programming Language Specification",
- "Subtitle": "Version of February 22, 2012"
+ "Subtitle": "Version of February 23, 2012"
}-->
<!--
@@ -5097,6 +5097,15 @@
</p>
<p>
+Implementation restriction: A compiler may restrict ImportPaths to
+non-empty strings using only characters belonging to
+<a href="http://www.unicode.org/versions/Unicode6.0.0/">Unicode's</a>
+L, M, N, P, and S general categories (the Graphic characters without
+spaces) and may also exclude the ASCII characters
+<code>!"#$%&'()*,:;<=>?[\]^`{|}</code>.
+</p>
+
+<p>
Assume we have compiled a package containing the package clause
<code>package math</code>, which exports function <code>Sin</code>, and
installed the compiled package in the file identified by
