title: diff text documents but ignore single character differences? Set a minimum edit distance filter?
body: <p>I have two versions of a large book in txt format and I'd like to compare them to find significant changes between the versions, ignoring small single character differences.</p>
  
  <p>There are lots of diffing tools that can ignore whitespace differences, but I also want to ignore small typos and single or couple character differences.  For example, one version of the book has a repeated misspelling of <code>leige</code> hundreds of times and this is corrected in the next version to <code>liege</code>.  Some proper nouns have also changed their spelling.  (I could make custom workarounds for each misspelling, but would like something more general purpose)</p>
  
  <p>Since I only care about more significant multi-word differences want I really want is to set a filter that ignores changes for a line unless the Levenshtein edit distance is above some threshold.</p>
  
  <p>Looking around all the diff/comparisons tools I find seem to have code in mind so they lack any feature around ignoring small text changes.  Google's diff_match_patch library is great for diffing plaintext and ignoring whitespace changes (<a href="https://neil.fraser.name/software/diff_match_patch/demos/diff.html" rel="nofollow noreferrer">demo here</a>) but doesn't seem to have an out of the box way to ignore single character non-whitespace differences.</p>
  
  <p><strong>tl;dr; Are there any diff tools that can compare text documents but filter out minor single character non-whitespace differences?</strong></p>