rustdoc-search: allow `:: ` and ` ::`

This restriction made sense back when spaces separated function
parameters, but now that they separate path components, there's
no real ambiguity any more.

Additionally, the Rust language allows it.

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/rustdoc-js-std/parser-paths.js b/tests/rustdoc-js-std/parser-paths.js
index 8d4dedf3f46..774e5d028cc 100644
--- a/tests/rustdoc-js-std/parser-paths.js
+++ b/tests/rustdoc-js-std/parser-paths.js
@@ -16,6 +16,54 @@ const PARSED = [
         error: null,
     },
     {
+        query: "a:: a",
+        elems: [{
+            name: "a:: a",
+            fullPath: ["a", "a"],
+            pathWithoutLast: ["a"],
+            pathLast: "a",
+            generics: [],
+            typeFilter: -1,
+        }],
+        foundElems: 1,
+        original: 'a:: a',
+        returned: [],
+        userQuery: 'a:: a',
+        error: null,
+    },
+    {
+        query: "a ::a",
+        elems: [{
+            name: "a ::a",
+            fullPath: ["a", "a"],
+            pathWithoutLast: ["a"],
+            pathLast: "a",
+            generics: [],
+            typeFilter: -1,
+        }],
+        foundElems: 1,
+        original: 'a ::a',
+        returned: [],
+        userQuery: 'a ::a',
+        error: null,
+    },
+    {
+        query: "a  ::  a",
+        elems: [{
+            name: "a  ::  a",
+            fullPath: ["a", "a"],
+            pathWithoutLast: ["a"],
+            pathLast: "a",
+            generics: [],
+            typeFilter: -1,
+        }],
+        foundElems: 1,
+        original: 'a  ::  a',
+        returned: [],
+        userQuery: 'a  ::  a',
+        error: null,
+    },
+    {
         query: 'A::B,C',
         elems: [
             {