Auto merge of #59622 - GuillaumeGomez:improve-one-char-search, r=QuietMisdreavus

Ensure that exact matches come first in rustdoc search

Fixes #59287.

cc @scottmcm

r? @QuietMisdreavus

Author: bors

src/librustdoc/html/static/main.js

@@ -930,10 +930,10 @@ if (!DOMTokenList.prototype.remove) {
                     returned = checkReturned(ty, output, true);
                     if (output.name === "*" || returned === true) {
                         in_args = false;
-                        var module = false;
+                        var is_module = false;
 
                         if (input === "*") {
-                            module = true;
+                            is_module = true;
                         } else {
                             var allFound = true;
                             for (var it = 0; allFound === true && it < inputs.length; it++) {
@@ -955,7 +955,7 @@ if (!DOMTokenList.prototype.remove) {
                                 dontValidate: true,
                             };
                         }
-                        if (module === true) {
+                        if (is_module === true) {
                             results[fullId] = {
                                 id: i,
                                 index: -1,
@@ -1073,6 +1073,10 @@ if (!DOMTokenList.prototype.remove) {
                     if (index !== -1 || lev <= MAX_LEV_DISTANCE) {
                         if (index !== -1 && paths.length < 2) {
                             lev = 0;
+                        } else if (searchWords[j] === val) {
+                            // Small trick to fix when you're looking for a one letter type
+                            // and there are other short named types.
+                            lev = -1;
                         }
                         if (results[fullId] === undefined) {
                             results[fullId] = {

src/test/rustdoc-js/search-short-types.js

@@ -0,0 +1,8 @@
+const QUERY = 'P';
+
+const EXPECTED = {
+    'others': [
+        { 'path': 'search_short_types', 'name': 'P' },
+        { 'path': 'search_short_types', 'name': 'Ap' },
+    ],
+};

src/test/rustdoc-js/search-short-types.rs

@@ -0,0 +1,68 @@
+macro_rules! imp {
+    ($name:ident) => {
+        pub struct $name {
+            pub op: usize,
+        }
+        impl $name {
+            pub fn op() {}
+            pub fn cmp() {}
+            pub fn map() {}
+            pub fn pop() {}
+            pub fn ptr() {}
+            pub fn rpo() {}
+            pub fn drop() {}
+            pub fn copy() {}
+            pub fn zip() {}
+            pub fn sup() {}
+            pub fn pa() {}
+            pub fn pb() {}
+            pub fn pc() {}
+            pub fn pd() {}
+            pub fn pe() {}
+            pub fn pf() {}
+            pub fn pg() {}
+            pub fn ph() {}
+            pub fn pi() {}
+            pub fn pj() {}
+            pub fn pk() {}
+            pub fn pl() {}
+            pub fn pm() {}
+            pub fn pn() {}
+            pub fn po() {}
+        }
+    };
+    ($name:ident, $($names:ident),*) => {
+        imp!($name);
+        imp!($($names),*);
+    };
+}
+macro_rules! en {
+    ($name:ident) => {
+        pub enum $name {
+            Ptr,
+            Rp,
+            Rpo,
+            Pt,
+            Drop,
+            Dr,
+            Dro,
+            Sup,
+            Op,
+            Cmp,
+            Map,
+            Mp,
+        }
+    };
+    ($name:ident, $($names:ident),*) => {
+        en!($name);
+        en!($($names),*);
+    };
+}
+
+imp!(Ot, Foo, Cmp, Map, Loc, Lac, Toc, Si, Sig, Sip, Psy, Psi, Py, Pi, Pa, Pb, Pc, Pd);
+imp!(Pe, Pf, Pg, Ph, Pj, Pk, Pl, Pm, Pn, Po, Pq, Pr, Ps, Pt, Pu, Pv, Pw, Px, Pz, Ap, Bp, Cp);
+imp!(Dp, Ep, Fp, Gp, Hp, Ip, Jp, Kp, Lp, Mp, Np, Op, Pp, Qp, Rp, Sp, Tp, Up, Vp, Wp, Xp, Yp, Zp);
+
+en!(Place, Plac, Plae, Plce, Pace, Scalar, Scalr, Scaar, Sclar, Salar);
+
+pub struct P;