CodeMirror

The CodeMirror mode marc adds syntax highlighting for MARC and PICA.

https://codemirror.net/

Example

You can edit the following data and see effects on syntax highlighting:

LDR/00-23  *****crm##22*****#a#4500
005        19920902031155.0
008/00-39  870119q18601869xxunnn############rn####d
040	       ##$a[organization code]$c[organization code]

=260  \\$aNew York :$bSingleton Press,$c2001.
=700  1\‡aSmith, Mary.
=008  010226s2001\\\\||||||||||||||\|eng\d

003@    $0123456789
021A    $aDas @Beispiel mit $$-Zeichen
101@    $a23$cPICA
203@/01 $09875

Usage

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.43.0/codemirror.min.css">
...
<pre><code class="language-marc">
...put record data here...
</code></pre>
...
<script src='https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.43.0/codemirror.min.js'></script>
<script src='marc.js'></script>
<script src='codemirror.js'></script>