Some more changes please

Done, thanks@OskarStark

Could you please update the PR to tell aboutsymfony/symfony#30348 also? That'd be great :)

I've added aSee also at the end, like i've done for the service locator docs here :#11042

Please note that insymfony/symfony#31463 I'm proposing to change the fallback from FQCN to service id. This PR should be updated accordingly when mine is merged.

symfony/symfony#31463 is now merged with another behavior to document:
when a tagged_locator is used, the index-by attribute defaults to the tag name (minus any "dot" prefix):
!tagged_locator app.foo will collect a servicebar with tagapp.foo {foo: baz} as indexbaz (and fallback to the service idbar when thefoo attribute is not defined.

Closing as already merged in#11042, which was identical to this one and documented two different Symfony features (symfony/symfony#30348 andsymfony/symfony#30257). Thanks.

@javiereguiluz I don't think#11042 covers this feature.#11042 is aboutservice locators & the!tagged_locator tag, whereas this PR is abouttagged services &!tagged tag.

Even though they are very similar, they are still two different features, each with its own dedicated page. Currently, theindex_by &default_index_method options of the!tagged tag are not documented anywhere apart from the originalblog post.

Perhaps you should consider reopening this PR since it covers these undocumented features?

Let's open then. Thanks.

Thanks@XuruDragon for creating this PR! This is now merged and I've shortened the changes a bit without loosing any information afterwards in 4ffbc62 .