[wp-trac] [WordPress Trac] #44564: wp_make_link_relative(home_url()) returns empty

[WordPress Trac]

#44564: wp_make_link_relative(home_url()) returns empty
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 Reporter:  Fleuv         |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Permalinks    |    Version:  4.9.7
 Severity:  normal        |   Keywords:  needs-patch
  Focuses:                |
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 According to the documentation of the function
 [[https://codex.wordpress.org/Function_Reference/wp_make_link_relative|wp_make_link_relative()]]:

 > Removes the http or https protocols and the domain. **Keeps the path '/'
 at the beginning**, so it isn't a true relative link, but from the web
 root base.

 Regarding, keeping the path '/' at the beginning. This isn't necessarily
 true when there isn't a path after the web root base (e.g. with the
 homepage URL this is often the case) resulting in an empty string to be
 returned.

 Consider the test case in the code block below for a WordPress
 installation what uses the web root base. Thus I can confirm this bug to
 exists on installation locations such as: http://example.com/ or
 http://subdomain.example.com/ but not on http://example.com/subdirectory/

 The following code will return an empty string.
 {{{#!php
 <?php
 echo wp_make_link_relative(home_url());
 }}}


 The expected result is: '/'

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Ticket URL: <https://core.trac.wordpress.org/ticket/44564>
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