add 'more' option

[masuhar]

add 'more' option so that the shortcode automatically generates a "read more..." in the summary.

[prg-bib key='kasuya2024aplas-src' more='true']

The above example should work as if the "more" tag is inserted before, i.e.,

<!--more-->
[prg-bib key='kasuya2024aplas-src' more='false']

The default behavior can be "true". (But we need to update all the pages using the shortcode.)

[masuhar]

Inserting the following code didn't work.

    if($atts['more']!='false'){
        $more_link_text = __( '(more...)' );
        $code .= apply_filters( 'the_content_more_link', ' <a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text );
    }

However, it confirmed

• the 'more' option is recognized correctly.
• when 'more="true"', it produces '(more...)' text.
• it does not stop showing the subsequent frame.
• it appears even in the page view.

[masuhar]

I need to understand the execution model of generating a post page and generating a list of excerpted posts!