Execute shortcode only in another shortcode

I wonder if it’s possible to do a shortcode only in another shortcode. For example I got following code pieces:

<div class="su-heading su-heading-style-default su-heading-align-center" id="" style="font-size:13px;margin-bottom:20px"><div class="su-heading-inner">some pricing page</div></div>
[pricing_box]
  <div class="su-heading su-heading-style-default su-heading-align-center" id="" style="font-size:13px;margin-bottom:20px"><div class="su-heading-inner">Some title</div></div>
[/pricing_box]

Now I don’t want to define one shortcode heading which would apply to both the nested one and the first level shortcode. I want the both heading shortcodes to produce different outputs.
Of course, I could try to solve this by renaming one of the shortcodes to title or something, but this doesn’t always result in optimal naming arrangements.

Answers:

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Method 1

To use a different callback for the nested headings switch the shortcode handler
in the pricing_box callback and restore the main handler before you return
the string.

add_shortcode( 'pricing_box', 'shortcode_pricing_box' );
add_shortcode( 'heading',     'shortcode_heading_main' );

function shortcode_pricing_box( $atts, $content = '' )
{
    // switch shortcode handlers
    add_shortcode( 'heading', 'shortcode_heading_pricing_box' );

    $out = '<div class="pricing-box">' . do_shortcode( $content ) . '</div>';

    // restore main handler
    add_shortcode( 'heading', 'shortcode_heading_main' );

    return $out;
}

function shortcode_heading_main( $atts, $content = '' )
{
    return "<h2>$content</h2>";
}

function shortcode_heading_pricing_box( $atts, $content = '' )
{
    return "<h3>$content</h3>";
}

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0