ignoreWhitespace: true apparently ignores only leading whitespace

[daveyostcom]

using System;
using DiffPlex;
using DiffPlex.DiffBuilder;
using DiffPlex.DiffBuilder.Model;
using System.Text;

// ignoreWhitespace: true
// apparently ignores only leading whitespace

// Cribbed from https://stackoverflow.com/a/23302056/1390116

namespace DiffPlexTest.Controllers {

  class Program {

    static void Main(string[] args) {
      StringBuilder sb = new StringBuilder();

      string oldText = "123\nabc def\nabc def g\n";
      string newText = " 123\nabc  def\nabc def  g\n";

      var d = new Differ();
      var builder = new InlineDiffBuilder(d);
      var result = builder.BuildDiffModel(oldText, newText, ignoreWhitespace: true);

      foreach (var line in result.Lines) {
        if (line.Type == ChangeType.Inserted) {
          sb.Append("+ ");
        } else if (line.Type == ChangeType.Deleted) {
          sb.Append("- ");
        } else if (line.Type == ChangeType.Modified) {
          sb.Append("* ");
        } else if (line.Type == ChangeType.Imaginary) {
          sb.Append("? ");
        } else if (line.Type == ChangeType.Unchanged) {
          sb.Append("  ");
        }
        sb.Append(line.Text + "\n");
      }
      Console.WriteLine(sb);
    }

  }

}

// expected:
// –––––––––
// 123
// abc def
// abc def g
//
// actual:
// –––––––
//    123
// - abc def
// - abc def g
// + abc  def
// + abc def  g

[mmanela]

Yea, if you do word diffing it works as you expect but when doing line diffing it only does beginning and end.

What is your expected behavior @daveyostcom ?

[jimfoye]

@mmanela So, how do we "do word diffing" to get the diff to ignore all whitespace? I'm using the SideBySideDiffBuilder static helper methods, but always the result is the same, as OP reported, that only whitespace at the start and end of lines is being ignored. Thanks.

[mmanela]

You found a bug for sure, just pushed a commit to fix it