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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>CodeMirror: Emacs bindings demo</title>
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<link rel="stylesheet" href="../lib/codemirror.css">
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<script src="../lib/codemirror.js"></script>
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<script src="../mode/clike/clike.js"></script>
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<script src="../keymap/emacs.js"></script>
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<link rel="stylesheet" href="../doc/docs.css">
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<style type="text/css">
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.CodeMirror {border-top: 1px solid #eee; border-bottom: 1px solid #eee;}
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</style>
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</head>
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<body>
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<h1>CodeMirror: Emacs bindings demo</h1>
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<form><textarea id="code" name="code">
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#include "syscalls.h"
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/* getchar: simple buffered version */
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int getchar(void)
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{
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static char buf[BUFSIZ];
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static char *bufp = buf;
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static int n = 0;
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if (n == 0) { /* buffer is empty */
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n = read(0, buf, sizeof buf);
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bufp = buf;
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}
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return (--n >= 0) ? (unsigned char) *bufp++ : EOF;
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}
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</textarea></form>
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<p>The emacs keybindings are enabled by
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including <a href="../keymap/emacs.js">keymap/emacs.js</a> and setting
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the <code>keyMap</code> option to <code>"emacs"</code>. Because
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CodeMirror's internal API is quite different from Emacs, they are only
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a loose approximation of actual emacs bindings, though.</p>
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<p>Also note that a lot of browsers disallow certain keys from being
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captured. For example, Chrome blocks both Ctrl-W and Ctrl-N, with the
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result that idiomatic use of Emacs keys will constantly close your tab
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or open a new window.</p>
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<script>
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CodeMirror.commands.save = function() {
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var elt = editor.getWrapperElement();
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elt.style.background = "#def";
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setTimeout(function() { elt.style.background = ""; }, 300);
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};
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var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
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lineNumbers: true,
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mode: "text/x-csrc",
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keyMap: "emacs"
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});
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</script>
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</body>
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</html>
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