Rollup merge of #133043 - notriddle:master, r=fmease

rustdoc-search: case-sensitive only when capitals are used
This is the "smartcase" behavior, described by vim and dtolnay.
Fixes#133017

Author: matthiaskrgr

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

@@ -2500,6 +2500,7 @@ class DocSearch {
 constsortResults=async(results,typeInfo,preferredCrate)=>{
 constuserQuery=parsedQuery.userQuery;
 constnormalizedUserQuery=parsedQuery.userQuery.toLowerCase();
+constisMixedCase=normalizedUserQuery!==userQuery;
 constresult_list=[];
 for(constresultofresults.values()){
 result.item=this.searchIndex[result.id];
@@ -2511,10 +2512,12 @@ class DocSearch {
 leta,b;
 
 // sort by exact case-sensitive match
-a=(aaa.item.name!==userQuery);
-b=(bbb.item.name!==userQuery);
-if(a!==b){
-returna-b;
+if(isMixedCase){
+a=(aaa.item.name!==userQuery);
+b=(bbb.item.name!==userQuery);
+if(a!==b){
+returna-b;
+}
 }
 
 // sort by exact match with regard to the last word (mismatch goes later)

tests/rustdoc-js-std/write.js

@@ -0,0 +1,24 @@
+constEXPECTED=[
+{
+'query': 'write',
+'others': [
+{'path': 'std::fmt','name': 'write'},
+{'path': 'std::fs','name': 'write'},
+{'path': 'std::ptr','name': 'write'},
+{'path': 'std::fmt','name': 'Write'},
+{'path': 'std::io','name': 'Write'},
+{'path': 'std::hash::Hasher','name': 'write'},
+],
+},
+{
+'query': 'Write',
+'others': [
+{'path': 'std::fmt','name': 'Write'},
+{'path': 'std::io','name': 'Write'},
+{'path': 'std::fmt','name': 'write'},
+{'path': 'std::fs','name': 'write'},
+{'path': 'std::ptr','name': 'write'},
+{'path': 'std::hash::Hasher','name': 'write'},
+],
+},
+];

tests/rustdoc-js/case.js

@@ -0,0 +1,17 @@
+constEXPECTED=[
+{
+'query': 'Foo',
+'others': [
+{'path': 'case','name': 'Foo','desc': 'Docs for Foo'},
+{'path': 'case','name': 'foo','desc': 'Docs for foo'},
+],
+},
+{
+'query': 'foo',
+'others': [
+// https://github.com/rust-lang/rust/issues/133017
+{'path': 'case','name': 'Foo','desc': 'Docs for Foo'},
+{'path': 'case','name': 'foo','desc': 'Docs for foo'},
+],
+},
+];

tests/rustdoc-js/case.rs

@@ -0,0 +1,7 @@
+#![allow(nonstandard_style)]
+
+/// Docs for Foo
+pubstructFoo;
+
+/// Docs for foo
+pubstructfoo;