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go/scanner: skip first character if it's a BOM

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R=r
CC=golang-dev
https://golang.org/cl/6490095
This commit is contained in:
Robert Griesemer 2012-09-07 13:56:31 -07:00
parent 91f2a34ddc
commit d5ab44e2fe
1 changed files with 4 additions and 1 deletions
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5
src/pkg/go/scanner/scanner.go
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@ -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")
}
}