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document.createElement() shim creates elements with non-null siblings in IE < 9

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Example code (run in IE < 9): ``` javascript var div1 = document.createElement("div"); var div2 = document.createElement("div"); alert(div2.previousSibling); // Should be null, is actually a reference to div1 ``` nextSibling...

Change key handler to use CM6 keymap

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This PR changes the key handling to use a keymap with a single keybinding with the [any](https://codemirror.net/docs/ref/#view.KeyBinding.any) method, which is new in `@codemirror/view` 6.3.0. This means that rather than the...

Selecting a node does not work well in IE

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_From [[email protected]](https://code.google.com/u/102341046603171543275/) on January 01, 2011 10:33:19_ What steps will reproduce the problem? 1.Use the following HTML: function testClone(node){ var range = rangy.createRange(); range.selectNode(node); document.body.appendChild(range.cloneContents()); rangy.getSelection().setSingleRange(range); var range2 = rangy.getSelection().getRangeAt(0);...

In Chrome, <input autofocus> doesn't work when Rangy is included

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_From [[email protected]](https://code.google.com/u/109609144121560897758/) on January 21, 2013 14:16:45_ What steps will reproduce the problem? 1. Go to this URL: data:text/html;, 1. Watch the input box What is the expected output? What...

Block cursor improvements

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# Why The block cursor currently has a couple of issues. Firstly, the cursor is taller on an empty line than on non-empty lines. To illustrate this, all of the...

Currently, "武汉" is transliterated (via `to_url`) as "wu-yi". I have it on good authority that this is incorrect and should be transliterated as "wu-han", so this PR changes the transliteration...

IOError: closed stream error when starting worker process in Rails 6.1 on Ubuntu

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Steps to reproduce: 1. Use a machine running Ubuntu 20.04 with Ruby (I used 2.6.5 but I don't think it matters) and Bundler 2. Create a new Rails 6.1 application...

The built `dist/index.js` contains `/*@__PURE__*/` annotations, as mentioned in the [CM buildhelper README](https://github.com/codemirror/buildhelper/): > NOTE: This tool will add a `/*@__PURE__*/` annotation in front of every top-level function call, to...