network_site_url returns incorrect value for Multisite subdirectory install

[creativeinfusion]

network_site_url() does not return the location of the WordPress install for Multisite subdirectory installations

1. Install WordPress to its own directory (e.g. wordpress)
2. Install network as subdirectory.
3. Add a subsite (so we have main site and subsite).

network_site_url() returns the same value as network_home_url() when it should be different, i.e. it always returns http://domain.com rather than the expected http://domain.com/wordpress

For information, site_url and home_url return as follows:

	main site	subsite
site_url	http://domain.com/wordpress	http://domain.com/subsite
home_url	http://domain.com	http://domain.com/subsite

Note that the unexpected behaviour of site_url for the subsite seems to be by design (see comment:43:ticket:19796 and comment:78:ticket:19796).

[SergeyBiryukov]

Appears to be a duplicate of #23221.

[nacin]

I've removed the invalid designation from #23221 — what you are seeing is by design.

[SergeyBiryukov]

Duplicate of #23221.