I sometimes use for the clients, plugins that are based on wordpress shortcodes,they do offer a lot of options for the clients to play with like adding tabs galleries and so on.
But I see that the appearance of the shortcode itself is still a bit confusing to them.
so is there a way to customize them like instead of content here...
it will be something like : open gallery... end of gallery
and with out the square brackets?
While I am sure that this is theoritically possible, I am going to say “No, not really”.
If you look at the source, you can see that those brackets are hard-coded into a very complicated regex. I see no filters that will let you change that.
The only reasonable way to approach this that I can think of would be:
remove_filter('do_shortcode','the_content');
This, of course, will break any plugin supplied shortcodes as well as the core ones. So the other option would be to:
use into standard shortcodes
do_shortcode
on the result before returning the resultI think you should be able to preserve the functionality of Core and Plugin shortcodes as well as add your own pattern, but the regex you are needing is complex especially given the pattern you require.
Either option is far more code than I have time to address, not to mention the debugging that would be involved.