private Pattern[] CompilePunctuationPatterns()
{
Pattern[] puncsPat = new Pattern[puncs.Length];
for (int i = 0; i < puncs.Length; i++)
{
char punc = puncs[i];
puncsPat[i] = patternMap.ComputeIfAbsent(GetEscapedPuncPattern(punc), null);
}
return(puncsPat);
}