From d5ab44e2fe6fbc11528c7b3bb0f306167d8f1b1b Mon Sep 17 00:00:00 2001
From: Robert Griesemer <gri@golang.org>
Date: Fri, 7 Sep 2012 13:56:31 -0700
Subject: [PATCH] go/scanner: skip first character if it's a BOM

R=r
CC=golang-dev
https://golang.org/cl/6490095
---
 src/pkg/go/scanner/scanner.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/pkg/go/scanner/scanner.go b/src/pkg/go/scanner/scanner.go
index c213161c47..3322c58b33 100644
--- a/src/pkg/go/scanner/scanner.go
+++ b/src/pkg/go/scanner/scanner.go
@@ -125,6 +125,9 @@ func (s *Scanner) Init(file *token.File, src []byte, err ErrorHandler, mode Mode
 	s.ErrorCount = 0
 
 	s.next()
+	if s.ch == '\uFEFF' {
+		s.next() // ignore BOM
+	}
 }
 
 func (s *Scanner) error(offs int, msg string) {
@@ -390,7 +393,7 @@ func (s *Scanner) scanEscape(quote rune) {
 	for ; i > 0 && s.ch != quote && s.ch >= 0; i-- {
 		s.next()
 	}
-	if x > max || 0xd800 <= x && x < 0xe000 {
+	if x > max || 0xD800 <= x && x < 0xE000 {
 		s.error(offs, "escape sequence is invalid Unicode code point")
 	}
 }
-- 
2.48.1