Show exact case-sensitive matches first

See rust-lang/rust#129430

lib/search/docs/base-v2.js

@@ -2089,6 +2089,7 @@ export default class DocSearchV2 {
  */
  const sortResults = async (results, isType, preferredCrate) => {
  const userQuery = parsedQuery.userQuery;
+ const casedUserQuery = parsedQuery.original;
  const result_list = [];
  for (const result of results.values()) {
  result.item = this.searchIndex[result.id];
@@ -2099,6 +2100,13 @@ export default class DocSearchV2 {
  result_list.sort((aaa, bbb) => {
  let a, b;
 
+ // sort by exact case-sensitive match
+ a = (aaa.item.name !== casedUserQuery);
+ b = (bbb.item.name !== casedUserQuery);
+ if (a !== b) {
+ return a - b;
+ }
+
  // sort by exact match with regard to the last word (mismatch goes later)
  a = (aaa.word !== userQuery);
  b = (bbb.word !== userQuery);