The docs for mod_substitute say:
f
The f flag causes mod_substitute to flatten the result of a
substitution allowing for later substitutions to take place on the
boundary of this one.
Can someone tell me what that means? Perhaps give an example of when
I might want to use it? I'm unable to figure out what "flatten" means
in this context. Is there a case when something will break if I don't
use f?
Thanks.
--
Just because your voice reaches halfway around the world doesn't mean
you are wiser than when it reached only to the end of the bar.
Edward R. Murrow
