rustdoc-search: use more descriptive "x not found; y instead" message

Author: notriddle

src/librustdoc/html/static/js/search.js

@@ -2000,7 +2000,7 @@ function initSearch(rawSearchIndex) {
                 : results.query.elems[0].name;
             output += "<h3 class=\"search-corrections\">" +
                 `Type "${orig}" not found. ` +
-                "Showing results for " +
+                "Showing results for closest type name " +
                 `"${results.query.correction}" instead.</h3>`;
         }
 

tests/rustdoc-gui/search-corrections.goml

@@ -1,3 +1,5 @@
+// ignore-tidy-linelength
+
 // Checks that the search tab result tell the user about corrections
 // First, try a search-by-name
 go-to: "file://" + |DOC_PATH| + "/test_docs/index.html"
@@ -22,7 +24,7 @@ assert-css: (".search-corrections", {
 })
 assert-text: (
     ".search-corrections",
-    "Type \"notablestructwithlongnamr\" not found. Showing results for \"notablestructwithlongname\" instead."
+    "Type \"notablestructwithlongnamr\" not found. Showing results for closest type name \"notablestructwithlongname\" instead."
 )
 
 // Corrections do get shown on the "In Return Type" tab.
@@ -33,7 +35,7 @@ assert-css: (".search-corrections", {
 })
 assert-text: (
     ".search-corrections",
-    "Type \"notablestructwithlongnamr\" not found. Showing results for \"notablestructwithlongname\" instead."
+    "Type \"notablestructwithlongnamr\" not found. Showing results for closest type name \"notablestructwithlongname\" instead."
 )
 
 // Now, explicit return values
@@ -50,5 +52,5 @@ assert-css: (".search-corrections", {
 })
 assert-text: (
     ".search-corrections",
-    "Type \"notablestructwithlongnamr\" not found. Showing results for \"notablestructwithlongname\" instead."
+    "Type \"notablestructwithlongnamr\" not found. Showing results for closest type name \"notablestructwithlongname\" instead."
 )