/usr/share/doc/libjs-codemirror/examples/visibletabs.html is in libjs-codemirror 2.23-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | <!doctype html>
<html>
<head>
<title>CodeMirror: Visible tabs demo</title>
<link rel="stylesheet" href="../lib/codemirror.css">
<script src="../lib/codemirror.js"></script>
<script src="../mode/clike/clike.js"></script>
<link rel="stylesheet" href="../doc/docs.css">
<style type="text/css">
.CodeMirror {border-top: 1px solid #eee; border-bottom: 1px solid #eee;}
.cm-tab:after {
content: "\21e5";
display: -moz-inline-block;
display: -webkit-inline-block;
display: inline-block;
width: 0px;
position: relative;
overflow: visible;
left: -1.4em;
color: #aaa;
}
</style>
</head>
<body>
<h1>CodeMirror: Visible tabs demo</h1>
<form><textarea id="code" name="code">
#include "syscalls.h"
/* getchar: simple buffered version */
int getchar(void)
{
static char buf[BUFSIZ];
static char *bufp = buf;
static int n = 0;
if (n == 0) { /* buffer is empty */
n = read(0, buf, sizeof buf);
bufp = buf;
}
return (--n >= 0) ? (unsigned char) *bufp++ : EOF;
}
</textarea></form>
<p>Tabs inside the editor are spans with the
class <code>cm-tab</code>, and can be styled. This demo uses
an <code>:after</code> pseudo-class CSS hack that will not work on old
browsers. You can use a more conservative technique like a background
image as an alternative.</p>
<script>
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
lineNumbers: true,
tabSize: 4,
indentUnit: 4,
indentWithTabs: true,
mode: "text/x-csrc"
});
</script>
</body>
</html>
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