Update the intervals query docs

docs/reference/query-dsl/intervals-query.asciidoc

@@ -397,68 +397,3 @@ This query does *not* match a document containing the phrase `hot porridge is
 salty porridge`, because the intervals returned by the match query for `hot
 porridge` only cover the initial two terms in this document, and these do not
 overlap the intervals covering `salty`.
-
-Another restriction to be aware of is the case of `any_of` rules that contain
-sub-rules which overlap. In particular, if one of the rules is a strict
-prefix of the other, then the longer rule can never match, which can
-cause surprises when used in combination with `max_gaps`. Consider the
-following query, searching for `the` immediately followed by `big` or `big bad`,
-immediately followed by `wolf`:
-
-[source,console]
---------------------------------------------------
-POST _search
-{
-  "query": {
-    "intervals" : {
-      "my_text" : {
-        "all_of" : {
-          "intervals" : [
-            { "match" : { "query" : "the" } },
-            { "any_of" : {
-                "intervals" : [
-                    { "match" : { "query" : "big" } },
-                    { "match" : { "query" : "big bad" } }
-                ] } },
-            { "match" : { "query" : "wolf" } }
-          ],
-          "max_gaps" : 0,
-          "ordered" : true
-        }
-      }
-    }
-  }
-}
---------------------------------------------------
-
-Counter-intuitively, this query does *not* match the document `the big bad
-wolf`, because the `any_of` rule in the middle only produces intervals
-for `big` - intervals for `big bad` being longer than those for `big`, while
-starting at the same position, and so being minimized away. In these cases,
-it's better to rewrite the query so that all of the options are explicitly
-laid out at the top level:
-
-[source,console]
---------------------------------------------------
-POST _search
-{
-  "query": {
-    "intervals" : {
-      "my_text" : {
-        "any_of" : {
-          "intervals" : [
-            { "match" : {
-                "query" : "the big bad wolf",
-                "ordered" : true,
-                "max_gaps" : 0 } },
-            { "match" : {
-                "query" : "the big wolf",
-                "ordered" : true,
-                "max_gaps" : 0 } }
-           ]
-        }
-      }
-    }
-  }
-}
---------------------------------------------------

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search/230_interval_query.yml

@@ -21,6 +21,10 @@ setup:
             - '{"text" : "Baby its cold there outside"}'
             - '{"index": {"_index": "test", "_id": "4"}}'
             - '{"text" : "Outside it is cold and wet"}'
+            - '{"index": {"_index": "test", "_id": "5"}}'
+            - '{"text" : "the big bad wolf"}'
+            - '{"index": {"_index": "test", "_id": "6"}}'
+            - '{"text" : "the big wolf"}'
 
 ---
 "Test ordered matching":
@@ -444,4 +448,31 @@ setup:
                         prefix: out
   - match: { hits.total.value: 3 }
 
+---
+"Test rewrite disjunctions":
+  - do:
+      search:
+        index: test
+        body:
+          query:
+            intervals:
+              text:
+                all_of:
+                  intervals:
+                    - "match":
+                        "query": "the"
+                    - "any_of":
+                        "intervals":
+                          - "match":
+                              "query": "big"
+                          - "match":
+                              "query": "big bad"
+                    - "match":
+                        "query": "wolf"
+                  max_gaps: 0
+                  ordered: true
+
+  - match: { hits.total.value: 2   }
+  - match: { hits.hits.0._id:  "6" }
+  - match: { hits.hits.1._id:  "5" }