{{Support for Apache's mod_rewrite, which allows fancy mappings from URLs to
  resources}}

extern type redirect_code;
{{An HTTP code to return as part of a redirection}}
extern val temp : redirect_code;
extern val permanent : redirect_code;
extern val seeother : redirect_code;
extern val redir300 : redirect_code;
extern val redir301 : redirect_code;
extern val redir302 : redirect_code;
extern val redir303 : redirect_code;
extern val redir304 : redirect_code;
extern val redir305 : redirect_code;
extern val redir307 : redirect_code;
extern val notfound : redirect_code;
{{Return 404 Not Found}}

extern type rewrite_arg;
{{Some mod_rewrite flags take arguments.
  This type stands for values that may validly be given for one of those
  arguments, which excludes commas and some other characters.}}

extern type mod_rewrite_flag;
{{See <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewriterule">the
  Apache documentation</a> for information on what these flags mean.}}

extern val redirect : mod_rewrite_flag;
extern val forbidden : mod_rewrite_flag;
extern val gone : mod_rewrite_flag;
extern val last : mod_rewrite_flag;
extern val chain : mod_rewrite_flag;
extern val nosubreq : mod_rewrite_flag;
extern val nocase : mod_rewrite_flag;
extern val qsappend : mod_rewrite_flag;
extern val noescape : mod_rewrite_flag;
extern val passthrough : mod_rewrite_flag;

extern val mimeType : rewrite_arg -> mod_rewrite_flag;
extern val redirectWith : redirect_code -> mod_rewrite_flag;
extern val skip : int -> mod_rewrite_flag;
extern val env : rewrite_arg -> rewrite_arg -> mod_rewrite_flag;

extern type mod_rewrite_cond_flag;
{{See <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewritecond">the
  Apache documentation</a> for information on what these flags mean.}}

extern val cond_nocase : mod_rewrite_cond_flag;
extern val ornext : mod_rewrite_cond_flag;

extern val rewriteRule : regexp -> no_spaces -> [mod_rewrite_flag] -> [^Vhost];
{{See <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewriterule">Apache
  documentation for <tt>RewriteRule</tt></a>.}}

extern val rewriteCond : no_spaces -> regexp -> [mod_rewrite_cond_flag] -> [^Vhost];
{{See <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewritecond">Apache
  documentation for <tt>RewriteCond</tt></a>.}}

extern val rewriteBase : no_spaces -> [Location];
{{See <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewritebase">Apache
  documentation for <tt>RewriteBase</tt></a>.}}

extern type proxy_port;
{{A port number above 1024}}

extern val proxyRewrite : regexp -> no_spaces -> proxy_reverse_target -> [mod_rewrite_flag] -> [^Vhost];

{{Safe wrapper around mod_rewrite proxy flag. All requests matching
  the regular expression in the first argument are proxied to the host
  specified in the third argument, appending a new URI by substituting
  variables in the second argument as per Apache
  mod_rewrite. Additional rewrite flags may be specified.}}

extern type mod_rewrite_trace_level;
{{A mod_rewrite log level, between 0 and 8. 2 or 3 are useful for
  debugging, higher will slow down apache considerably. 0 disables
  rewrite logging.}}

extern val rewriteLogLevel : mod_rewrite_trace_level -> [Vhost];
{{See <a href="https://httpd.apache.org/docs/current/mod/mod_rewrite.html#logging">
  documentation for <tt>mod_rewrite log levels</tt></a>.}}