github-simplified-diffs.user.js

// ==UserScript==
// @name        Github simplified diffs
// @namespace   example
// @include     https://git.musta.ch/*
// @include     https://gist.git.musta.ch/*
// @include     https://github.com/*
// @include     https://gist.github.com/*
// @version     1.2
// @grant       none
// ==/UserScript==


function simplify() {
  function gsub(selector, regex) {
    var nodes = document.querySelectorAll(selector);
    for (var n = 0; n < nodes.length; n++) {
      var children = nodes[n].childNodes;
      for (var m = 0; m < children.length; m++) {
        var text = children[m];
        if (text.nodeType === 3) {
          text.textContent = text.textContent.replace(regex, ' ');
          break;
        }
      }
    }
  }
  gsub('td.blob-code-addition span.blob-code-inner', /^\+/);
  gsub('td.blob-code-deletion span.blob-code-inner', /^-/);
  gsub('td.blob-code-addition', /^\+/);
  gsub('td.blob-code-deletion', /^-/);
}

var token = null;
document.addEventListener(
  "DOMNodeInserted",
  function() { clearTimeout(token); token = setTimeout(simplify, 1); },
  false
);