Creates a numbered, unwrapped versions of .txt books (for the ones like in project gutenberg https://www.gutenberg.org/)

NumberedNoWrappedTxtBooks.cs

        public static void Main(string[] args)
        {
            var path = @"C:\Users\bob\Downloads\AliceInWonderland.txt";
            path = @"C:\Users\bob\Downloads\Frankenstein.txt";
            path = @"C:\Users\bob\Downloads\MobyDick.txt";
            var text = File.ReadAllText(path);

            // add numbers in front of each line
            var lines = text.Split(["\r\n", "\n"], StringSplitOptions.None);
            var digits = Math.Floor(Math.Log10(lines.Length) + 1);
            var format = "{0:D" + digits + "}";
            var lineNum = 1;
            var newLines = new string[lines.Length];
            foreach (var line in lines)
            {
                newLines[lineNum - 1] = $"{string.Format(format, lineNum)}: {line}";
                lineNum++;
            }

            var newPath = Path.Combine(Path.GetDirectoryName(path)!, Path.GetFileNameWithoutExtension(path) + "Numbered" + Path.GetExtension(path));
            File.WriteAllLines(newPath, newLines);

            // create a no wrap version
            var linesNoWrap = new List<string>();
            var paragraph = new StringBuilder();
            var prevEmpty = false;
            foreach (var line in lines)
            {
                if (string.IsNullOrWhiteSpace(line))
                {
                    linesNoWrap.Add(paragraph.ToString());
                    if (!prevEmpty)
                    {
                        linesNoWrap.Add(string.Empty);
                    }
                    paragraph.Clear();
                    prevEmpty = true;
                }
                else
                {
                    if (paragraph.Length > 0)
                    {
                        paragraph.Append(' ');
                    }
                    paragraph.Append(line);
                    prevEmpty = false;
                }
            }

            if (paragraph.Length > 0)
            {
                linesNoWrap.Add(paragraph.ToString());
            }

            // create a no wrap numbered version
            var linesNoWrapNumbered = new string[linesNoWrap.Count];
            digits = Math.Floor(Math.Log10(linesNoWrap.Count) + 1);
            format = "{0:D" + digits + "}";
            lineNum = 1;
            foreach (var line in linesNoWrap)
            {
                linesNoWrapNumbered[lineNum - 1] = $"{string.Format(format, lineNum)}: {line}";
                lineNum++;
            }

            var newPathNoWrap = Path.Combine(Path.GetDirectoryName(path)!, Path.GetFileNameWithoutExtension(path) + "NoWrap" + Path.GetExtension(path));
            File.WriteAllLines(newPathNoWrap, linesNoWrap);

            var newPathNoWrapNumbered = Path.Combine(Path.GetDirectoryName(path)!, Path.GetFileNameWithoutExtension(path) + "NoWrapNumbered" + Path.GetExtension(path));
            File.WriteAllLines(newPathNoWrapNumbered, linesNoWrapNumbered);
        }