how to use "AND", "OR" for RewriteCond on Apache?

Question

Is this how to use AND, OR for RewriteCond on Apache?

rewritecond A [or]
rewritecond B
rewritecond C [or]
rewritecond D
RewriteRule ... something

becomes if ( (A or B) and (C or D) ) rewrite_it.

So it seems like "OR" is higher precedence than "AND"? Is there a way to easily tell, like in the (A or B) and (C or D) syntax?

Answer 1

You’ll probably need to convert it into disjunctive normal form:

  (A or B) and (C or D)
= (A and (C or D)) or (B and (C or D))
= (A and C) or (A and D) or (B and C) or (B and D)