<p>I wanted to build a minimal syntax highlighting for fasta files. Such files are used commonly in biology/bioinformatics and may look like this:</p>

<pre><code>>Description of first element
TAGCGACTACGACTACGATCAGCATCTACGAT

>Description of second element
TGAGCTACGACGTGAGCGGGGAGCGGCGCCTAG
</code></pre>

<p>I wanted to highlight the description lines and thought that marking it as "comment" should work. However, it looks like it is not possible to use <code>></code> as character for a comment.</p>

<p>/home/myuser/.config/geany/filedefs/filetypes.Fasta.conf:</p>

<pre><code>[styling=Conf]

[settings]
lexer_filetype=Conf
extension=fasta

comment_single=>
</code></pre>

<p>The <code>filetype_extensions.conf</code> was adjusted accordingly and the *.fasta files are recognized as Fasta files according to the menu <code>Document</code> -> <code>Set filetype</code></p>

<p>This does not work as intended. Lines starting with <code>#</code> or <code>;</code> are highlighted as comments, but lines starting with <code>></code> are not.</p>

<p>Did I do anything wrong? Could you please help me with this (seemingly simple) issue?</p>

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