func ruleEntity(s *StateInline, silent bool) (_ bool) {
pos := s.Pos
src := s.Src
if src[pos] != '&' {
return
}
max := s.PosMax
if pos+1 < max {
if e, n := html.ParseEntity(src[pos:]); n > 0 {
if !silent {
s.Pending.WriteString(e)
}
s.Pos += n
return true
}
}
if !silent {
s.Pending.WriteByte('&')
}
s.Pos++
return true
}
func unescapeAll(s string) string {
anyChanges := false
i := 0
for i < len(s)-1 {
b := s[i]
if b == '\\' {
if mdpunct[s[i+1]] {
anyChanges = true
break
}
} else if b == '&' {
if _, n := html.ParseEntity(s[i:]); n > 0 {
anyChanges = true
break
}
}
i++
}
if !anyChanges {
return s
}
buf := make([]byte, len(s))
copy(buf[:i], s)
j := i
for i < len(s) {
b := s[i]
if b == '\\' {
if i+1 < len(s) {
b = s[i+1]
if mdpunct[b] {
buf[j] = b
j++
} else {
buf[j] = '\\'
j++
buf[j] = b
j++
}
i += 2
continue
}
} else if b == '&' {
if e, n := html.ParseEntity(s[i:]); n > 0 {
if len(e) > n && len(buf) == len(s) {
newBuf := make([]byte, cap(buf)*2)
copy(newBuf[:j], buf)
buf = newBuf
}
j += copy(buf[j:], e)
i += n
continue
}
}
buf[j] = b
j++
i++
}
return string(buf[:j])
}