Add hook to insert_with_markers() so theme/plugin authors can prevent writing to .htaccess

[alimony]

If not using .htaccess to rewrite, but instead keeping those settings in an Apache config file, it would be nice if writing the .htaccess file could be prevented by hooking into the function that does that (e.g. returning false or something like that).

Why? If the Apache option AllowOverride is turned off (which it should be for performance reasons, if not using any .htaccess files) the file won't ever be read. But still having it around (except cluttering) can possibly confuse someone having access to the server, seeing the file and thinking it actually controls anything. Especially since most WordPress support threads on the Internet assumes that an .htaccess file is used for rewrite rules.

One solution is to keep an empty, non-writable .htaccess file, optionally having a comment in it saying it's unused, but getting rid of the file altogether would be much cleaner. Also, it can still happen that someone accidentally changes the file permission, and someone else (or the same person) saves permalink options, saving a new .htaccess file, having created the possibility of confusion once again.

[jeremyfelt]

Introduces filter flush_rules_hard

[jeremyfelt]

23491.diff​ introduces a filter flush_rules_hard that enables one to skip the creation of a .htaccess file or IIS file. This comes in handy not only for those managing configurations separately, but for Nginx or other web servers as well where the .htaccess file becomes just clutter.

[nacin]

My take is 23491.2.diff​. Thoughts?

[jeremyfelt]

I like that that one better.

[wonderboymusic]

In 25328:

Add filter flush_rewrite_rules_hard to give devs chance to prevent writing to file when hard-flushing rewrite rules.

Props jeremyfelt, nacin.
Fixes #23491.

[DrewAPicture]

This filter needs a docblock per ​inline documentation standards

[nacin]

In 25464:

Add documentation for the new flush_rewrite_rules_hard filter. fixes #23491.

[chriscct7]

#14549 was marked as a duplicate.

[DrewAPicture]

#14549 was marked as a duplicate.