<p></p>
<p>The open dialog is provided by the GTK library, not Geany itself.  On my Linux box it shows a list of available protocols, but maybe GTK on Mac doesn't provide any such protocols, and hence the red background when you type <code>:</code>.</p>
<p>Maybe there is no list because nobody interfaced GTK to the relevant OSX libraries or because of permissions (OSX seems to be getting more restrictive on these things).</p>

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