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[Plugin: SyntaxHighlighter Evolved] do_shortcode returns/echos "1"

  • I’m doing something a bit more complex for a plugin, but solving this riddle will solve my issue as well.

    In hooking do_shortcode into the_content like so:

    add_filter('the_content', 'show_shortcode');
    
    function show_shortcode() {
    	echo do_shortcode('[html]Text[/html]');
    }

    …it echos/returns 1. Other shortcodes work as expected, but none of the ones associated with this plugin do. Switched wp_debug on to no avail.

    What am I missing here?

    http://wordpress.org/extend/plugins/syntaxhighlighter/

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