Ok, now we have synonyms which is great and helps a bit more to organize the tags. But I think we need something more (in addition).
I know that having tag hierarchy was proposed before and more or less declined but I mean something different.
This question clearly says that synonyms like
php5 -> php are not intended (I swear, this is the last question about it.. from me ;) ) and the comments show that we indeed should have version numbers in the tags.
But if we have a look at the
php5 tag, we can see that only a little more than half of the questions are tagged with
php. Clearly every of these questions should be tagged with
php as this the tag which is most probably in the interesting tag list.
We cannot keep track of all the questions that miss this tag and retag them.
Can we have some kind of a base-tag relationship that adds a tag like
php if a question is tagged with
php5 and missing it? This could be implemented like the synonyms.