rustdoc-search: account for numeric disambiguators on impls

Fixes #128676

src/librustdoc/html/static/js/main.js

@@ -390,13 +390,18 @@ function preLoadCss(cssUrl) {
             if (splitAt !== -1) {
                 const implId = savedHash.slice(0, splitAt);
                 const assocId = savedHash.slice(splitAt + 1);
-                const implElem = document.getElementById(implId);
-                if (implElem && implElem.parentElement.tagName === "SUMMARY" &&
-                    implElem.parentElement.parentElement.tagName === "DETAILS") {
-                    onEachLazy(implElem.parentElement.parentElement.querySelectorAll(
+                const implElems = document.querySelectorAll(
+                    `details > summary > section[id^="${implId}"]`,
+                );
+                onEachLazy(implElems, implElem => {
+                    const numbered = /^(.+?)-([0-9]+)$/.exec(implElem.id);
+                    if (implElem.id !== implId && (!numbered || numbered[1] !== implId)) {
+                        return false;
+                    }
+                    return onEachLazy(implElem.parentElement.parentElement.querySelectorAll(
                         `[id^="${assocId}"]`),
                         item => {
-                            const numbered = /([^-]+)-([0-9]+)/.exec(item.id);
+                            const numbered = /^(.+?)-([0-9]+)$/.exec(item.id);
                             if (item.id === assocId || (numbered && numbered[1] === assocId)) {
                                 openParentDetails(item);
                                 item.scrollIntoView();
@@ -404,10 +409,11 @@ function preLoadCss(cssUrl) {
                                 setTimeout(() => {
                                     window.location.replace("#" + item.id);
                                 }, 0);
+                                return true;
                             }
                         },
                     );
-                }
+                });
             }
         }
     }

tests/rustdoc-gui/search-result-impl-disambiguation.goml

@@ -41,3 +41,24 @@ assert-document-property: ({
     "URL": "struct.ZyxwvutMethodDisambiguation.html#method.method_impl_disambiguation-1"
 }, ENDS_WITH)
 assert: "section:target"
+
+// Checks that, if a type has two methods with the same name,
+// and if it has multiple inherent impl blocks, that the numeric
+// impl block's disambiguator is also acted upon.
+go-to: "file://" + |DOC_PATH| + "/lib2/index.html?search=MultiImplBlockStruct->bool"
+wait-for: "#search-tabs"
+assert-count: ("a.result-method", 1)
+assert-attribute: ("a.result-method", {
+    "href": "../lib2/another_mod/struct.MultiImplBlockStruct.html#impl-MultiImplBlockStruct/method.second_fn"
+})
+click: "a.result-method"
+wait-for: "details:has(summary > #impl-MultiImplBlockStruct-1) > div section[id='method.second_fn']:target"
+
+go-to: "file://" + |DOC_PATH| + "/lib2/index.html?search=MultiImplBlockStruct->u32"
+wait-for: "#search-tabs"
+assert-count: ("a.result-method", 1)
+assert-attribute: ("a.result-method", {
+    "href": "../lib2/another_mod/struct.MultiImplBlockStruct.html#impl-MultiImplBlockTrait-for-MultiImplBlockStruct/method.second_fn"
+})
+click: "a.result-method"
+wait-for: "details:has(summary > #impl-MultiImplBlockTrait-for-MultiImplBlockStruct) > div section[id='method.second_fn-1']:target"

tests/rustdoc-gui/src/lib2/another_mod/mod.rs

@@ -1 +1,19 @@
-pub fn tadam() {}
+pub struct MultiImplBlockStruct;
+
+impl MultiImplBlockStruct {
+    pub fn first_fn() {}
+}
+
+impl MultiImplBlockStruct {
+    pub fn second_fn(self) -> bool { true }
+}
+
+pub trait MultiImplBlockTrait {
+    fn first_fn();
+    fn second_fn(self) -> u32;
+}
+
+impl MultiImplBlockTrait for MultiImplBlockStruct {
+    fn first_fn() {}
+    fn second_fn(self) -> u32 { 1 }
+}