PR63715: s/can/came and add a caution about REDIRECT_-prefixed envvars
@@ -318,10 +318,10 @@ RewriteRule "^foo\.html$" "foo.night.html"
<dt>Description:</dt>
<dd>
- <p>At time, we want to maintain some kind of status when we
+ <p>At times, we want to maintain some kind of status when we
perform a rewrite. For example, you want to make a note that
you've done that rewrite, so that you can check later to see if a
- request can via that rewrite. One way to do this is by setting an
+ request came via that rewrite. One way to do this is by setting an
environment variable.</p>
</dd>
@@ -344,7 +344,10 @@ RewriteCond "%{ENV:rewritten}" =1
<p>Note that environment variables do not survive an external
redirect. You might consider using the [CO] flag to set a
- cookie.</p>
+ cookie. For per-directory and htaccess rewrites, where the final
+ substitution is processed as an internal redirect, environment
+ variables from the previous round of rewriting are prefixed with
+ "REDIRECT_". </p>
</dd>
</dl>
