Add to the list of common uses cases in the docs.

README.rst

@@ -70,6 +70,17 @@ typical for VCL deployments, such as:
 
 * Generating redirect responses, based on a header or the URL.
 
+* Permitting or rejecting request methods.
+
+* Matching the Basic Authentication credentials in an Authorization
+  request header.
+
+* Matching media types in the Content-Type header of a backend
+  response to determine if the content is compressible.
+
+* Matching headers or URLs to conditionally execute code that depends
+  on features of the request or response.
+
 Operations such as these are commonly implemented in native VCL with
 an ``if-elsif-elsif`` sequence of string comparisons or regex matches.
 As the number of matches increases, such a sequence becomes cumbersome

src/vmod_selector.vcc

@@ -66,6 +66,17 @@ typical for VCL deployments, such as:
 
 * Generating redirect responses, based on a header or the URL.
 
+* Permitting or rejecting request methods.
+
+* Matching the Basic Authentication credentials in an Authorization
+  request header.
+
+* Matching media types in the Content-Type header of a backend
+  response to determine if the content is compressible.
+
+* Matching headers or URLs to conditionally execute code that depends
+  on features of the request or response.
+
 Operations such as these are commonly implemented in native VCL with
 an ``if-elsif-elsif`` sequence of string comparisons or regex matches.
 As the number of matches increases, such a sequence becomes cumbersome