From e87060f707c107eeb99295e961eb1437d0dd0436 Mon Sep 17 00:00:00 2001
From: Cell <1024@lruihao.cn>
Date: Wed, 31 Dec 2025 16:43:04 +0800
Subject: [PATCH] perf(search): enable anchorify for headings in search results
 (#672)

---
 assets/js/theme.js       |  1 +
 hugo.toml                |  2 +
 layouts/home.search.json | 92 +++++++++++++++++++++++++---------------
 3 files changed, 61 insertions(+), 34 deletions(-)

diff --git a/assets/js/theme.js b/assets/js/theme.js
index 087110c0..9d852fa8 100644
--- a/assets/js/theme.js
+++ b/assets/js/theme.js
@@ -372,6 +372,7 @@ class FixIt {
         }
       );
       autosearch.on('autocomplete:selected', (_event, suggestion, _dataset, _context) => {
+        document.getElementById('mask')?.click();
         window.location.assign(suggestion.uri);
       });
       if (isMobile) {
diff --git a/hugo.toml b/hugo.toml
index c89f2631..5af42bcc 100644
--- a/hugo.toml
+++ b/hugo.toml
@@ -496,6 +496,8 @@ snippetLength = 30
 highlightTag = "em"
 # whether to use the absolute URL based on the baseURL in search index
 absoluteURL = false
+# FixIt 0.4.0 | NEW whether to enable anchorify for headings in search results
+anchorify = true
 
 [params.search.algolia]
 index = ""
diff --git a/layouts/home.search.json b/layouts/home.search.json
index 18eae38c..f0907ace 100644
--- a/layouts/home.search.json
+++ b/layouts/home.search.json
@@ -22,48 +22,72 @@
     {{/* Remove line number for code */}}
     {{- $content = $content | replaceRE `<span class="lnt?"> *\d*\n?</span>` "" -}}
     {{- $content = $content | replaceRE ` class="heading-element"` "" -}}
-    {{- $anchor := "" -}}
-    {{- range $h, $contenth := split $content "<h1 id=" -}}
-      {{- if gt $h 0 -}}
-        {{- $anchor = replace (index (split $contenth ">") 0) `"` "" -}}
-        {{- $contenth = printf "<h1 id=%v" $contenth -}}
+    {{- if ne $.Site.Params.search.anchorify false -}}
+      {{- /* When anchorify is enabled (default), create separate index entries for each heading */ -}}
+      {{- $anchor := "" -}}
+      {{- range $h, $contenth := split $content "<h1 id=" -}}
+        {{- if gt $h 0 -}}
+          {{- $anchor = replace (index (split $contenth ">") 0) `"` "" -}}
+          {{- $contenth = printf "<h1 id=%v" $contenth -}}
+        {{- end -}}
+        {{- range $i, $contenti := split $contenth "<h2 id=" -}}
+          {{- if gt $i 0 -}}
+            {{- $anchor = replace (index (split $contenti ">") 0) `"` "" -}}
+            {{- $contenti = printf "<h2 id=%v" $contenti -}}
+          {{- end -}}
+          {{- range $j, $contentj := split $contenti "<h3 id=" -}}
+            {{- if gt $j 0 -}}
+              {{- $anchor = replace (index (split $contentj ">") 0) `"` "" -}}
+              {{- $contentj = printf "<h3 id=%v" $contentj -}}
+            {{- end -}}
+            {{- range $k, $contentk := split $contentj "<h4 id=" -}}
+              {{- if gt $k 0 -}}
+                {{- $anchor = replace (index (split $contentk ">") 0) `"` "" -}}
+                {{- $contentk = printf "<h4 id=%v" $contentk -}}
+              {{- end -}}
+              {{- range $l, $contentl := split $contentk "<h5 id=" -}}
+                {{- if gt $l 0 -}}
+                  {{- $anchor = replace (index (split $contentl ">") 0) `"` "" -}}
+                  {{- $contentk = printf "<h5 id=%v" $contentl -}}
+                {{- end -}}
+                {{- range $m, $contentm := split $contentl "<h6 id=" -}}
+                  {{- if gt $m 0 -}}
+                    {{- $anchor = replace (index (split $contentm ">") 0) `"` "" -}}
+                    {{- $contentm = printf "<h6 id=%v" $contentm -}}
+                  {{- end -}}
+                  {{/* Plainify, unescape and remove (\n, \t) */}}
+                  {{- $contentj = $contentj | plainify | htmlUnescape | replaceRE `[\n\t ]+` " " -}}
+                  {{- if gt $.Site.Params.search.contentLength 0 -}}
+                    {{- $contentj = substr $contentj 0 $.Site.Params.search.contentLength -}}
+                  {{- end -}}
+                  {{- if $contentj | and (ne $contentj " ") -}}
+                    {{- $one := printf "%v:%v:%v" $uri $i $j | dict "content" $contentj "uri" (printf "%v#%v" $uri $anchor) "objectID" | merge $meta -}}
+                    {{- $index = $index | append $one -}}
+                  {{- end -}}
+                {{- end -}}
+              {{- end -}}
+            {{- end -}}
+          {{- end -}}
+        {{- end -}}
       {{- end -}}
-      {{- range $i, $contenti := split $contenth "<h2 id=" -}}
+    {{- else -}}
+      {{- /* When anchorify is disabled, create index entries by splitting at h2 and h3 headings only */ -}}
+      {{- range $i, $contenti := split $content "<h2 id=" -}}
         {{- if gt $i 0 -}}
-          {{- $anchor = replace (index (split $contenti ">") 0) `"` "" -}}
           {{- $contenti = printf "<h2 id=%v" $contenti -}}
         {{- end -}}
         {{- range $j, $contentj := split $contenti "<h3 id=" -}}
           {{- if gt $j 0 -}}
-            {{- $anchor = replace (index (split $contentj ">") 0) `"` "" -}}
             {{- $contentj = printf "<h3 id=%v" $contentj -}}
           {{- end -}}
-          {{- range $k, $contentk := split $contentj "<h4 id=" -}}
-            {{- if gt $k 0 -}}
-              {{- $anchor = replace (index (split $contentk ">") 0) `"` "" -}}
-              {{- $contentk = printf "<h4 id=%v" $contentk -}}
-            {{- end -}}
-            {{- range $l, $contentl := split $contentk "<h5 id=" -}}
-              {{- if gt $l 0 -}}
-                {{- $anchor = replace (index (split $contentl ">") 0) `"` "" -}}
-                {{- $contentk = printf "<h5 id=%v" $contentl -}}
-              {{- end -}}
-              {{- range $m, $contentm := split $contentl "<h6 id=" -}}
-                {{- if gt $m 0 -}}
-                  {{- $anchor = replace (index (split $contentm ">") 0) `"` "" -}}
-                  {{- $contentm = printf "<h6 id=%v" $contentm -}}
-                {{- end -}}
-                {{/* Plainify, unescape and remove (\n, \t) */}}
-                {{- $contentj = $contentj | plainify | htmlUnescape | replaceRE `[\n\t ]+` " " -}}
-                {{- if gt $.Site.Params.search.contentLength 0 -}}
-                  {{- $contentj = substr $contentj 0 $.Site.Params.search.contentLength -}}
-                {{- end -}}
-                {{- if $contentj | and (ne $contentj " ") -}}
-                  {{- $one := printf "%v:%v:%v" $uri $i $j | dict "content" $contentj "uri" (printf "%v#%v" $uri $anchor) "objectID" | merge $meta -}}
-                  {{- $index = $index | append $one -}}
-                {{- end -}}
-              {{- end -}}
-            {{- end -}}
+          {{/* Plainify, unescape and remove (\n, \t) */}}
+          {{- $contentj = $contentj | plainify | htmlUnescape | replaceRE `[\n\t ]+` " " -}}
+          {{- if gt $.Site.Params.search.contentLength 0 -}}
+            {{- $contentj = substr $contentj 0 $.Site.Params.search.contentLength -}}
+          {{- end -}}
+          {{- if $contentj | and (ne $contentj " ") -}}
+            {{- $one := printf "%v:%v:%v" $uri $i $j | dict "content" $contentj "objectID" | merge $meta -}}
+            {{- $index = $index | append $one -}}
           {{- end -}}
         {{- end -}}
       {{- end -}}