private bool GetIsValidWholeWordMatch(GetMatchingLinesArgs args, string adjustedSearchLine, HighlightInfo match) { bool previousCharacterMatters = !LuceneHelper.IsValidTokenBreakCharactor(args.SearchString.FirstOrDefault()); char previousCharacter = adjustedSearchLine.ElementAtOrDefault(match.StartIndex - 1); bool nextCharacterMatters = !LuceneHelper.IsValidTokenBreakCharactor(args.SearchString.LastOrDefault()); char nextCharacter = adjustedSearchLine.ElementAtOrDefault(match.EndIndex); bool isValidWholeWordMatch = (!previousCharacterMatters || LuceneHelper.IsValidTokenBreakCharactor(previousCharacter)) && (!nextCharacterMatters || LuceneHelper.IsValidTokenBreakCharactor(nextCharacter)); return(isValidWholeWordMatch); }