Overhaul image processing and other changes

* Get rid of every single `.Scratch`
* Bump KaTeX from 0.15.3 to 0.15.6
* Bump Fuse from 6.5.3 to 6.6.2
* Add cache busting to search indexes
* Improve search results in general
* Overhaul image processing
* By default, use `webp` as an extra image format conditionally (Hugo 0.83+)
* Other minor changes

1 files changed, 66 insertions, 47 deletions

diff --git a/layouts/_default/_markup/render-image.html b/layouts/_default/_markup/render-image.html
index 6f9ae60..77af37a 100644
--- a/layouts/_default/_markup/render-image.html
+++ b/layouts/_default/_markup/render-image.html
@@ -2,8 +2,14 @@
 {{ $altText := .Text }}
 {{ $class   := .Page.Param "markupImgClass" }}
 
-<!-- Get image processing options -->
-{{ $imageProc := .Page.Scratch.Get "imageProc" }}
+
+<!-- Image processing configuration -->
+{{ $imgProcConfig := false }}
+
+{{ with .Page }}
+  {{ $imgProcConfig = partialCached "utilities/image-processing-config" . }}
+{{ end }}
+
 
 <!-- Default image path -->
 {{ $imgPath := .Page.Param "imgPath" }}
@@ -12,58 +18,71 @@
   {{ $file = path.Join $imgPath $file }}
 {{ end }}
 
-<!-- Assume file is local if found -->
-{{ with $.Page.Resources.GetMatch $file }}
+{{ $inputFile := .Page.Resources.GetMatch $file }}
 
-  <!-- If image width is equal or greater than X, process it -->
-  {{ if ge .Width $imageProc.markupAutoResizeWidth }}
 
-    {{ $mediumRes := (index $imageProc.mediumRes 0) }}
+{{ with partial "utilities/image-processing" (dict "context" . "input" $inputFile "config" $imgProcConfig) }}
 
-    {{ $outputSet := slice }}
-    {{ $inputFile := . }}
+  {{ if .sets.default }}
+  
+    <picture>
     
-    {{ range $imageProc }}
-      {{ if reflect.IsSlice . }}
-        {{ $outputSet = $outputSet | append (printf "%s %s" (($inputFile.Resize (index . 0)).RelPermalink) (index . 1)) }}
+      <!-- Extra sets -->
+      {{ range .sets.extra }}
+        <source
+          srcset='{{ delimit .source ", " }}'
+          type="{{ .mediaType }}"
+        >
       {{ end }}
-    {{ end }}
+      
+      <!-- Default set -->
+      <source
+        srcset='{{ delimit .sets.default ", " }}'
+        type="{{ .default.MediaType }}"
+      >
+      
+      <img
+        {{ with $class }}class="{{ . }}"{{ end }}
+        loading="lazy"
+        {{ with .default }}
+          src="{{ .RelPermalink }}"
+          width="{{ .Width }}"
+          height="{{ .Height }}"
+        {{ end }}
+        {{ with $altText }}alt="{{ . }}"{{ end }}
+      />
+      
+    </picture>
     
-    <img
-      {{ with $class }}class="{{ . }}"{{ end }}
-      loading="lazy"
-      srcset='{{ delimit $outputSet ", " }}'
-      src="{{ (.Resize $mediumRes).RelPermalink }}"
-      width="{{ (.Resize $mediumRes).Width }}"
-      height="{{ (.Resize $mediumRes).Height }}"
-      {{ with $altText }}alt="{{ . }}"{{ end }}
-    />
-
   {{ else }}
-
-    {{ $processed := (.Resize (printf "%vx" .Width)) }}
-
-    <img
-      {{ with $class }}class="{{ . }}"{{ end }}
-      loading="lazy"
-      src="{{ $processed.RelPermalink }}"
-      width="{{ .Width }}"
-      height="{{ .Height }}"
-      {{ with $altText }}alt="{{ . }}"{{ end }}
-    />
-
-  {{ end }}
+  
+    <!-- Avoid trying to get width and height from SVG files -->
+    {{ if .input }}
+      <img
+        {{ with $class }}class="{{ . }}"{{ end }}
+        loading="lazy"
+        {{ with .input }}
+          src="{{ .RelPermalink }}"
+          {{ if ne .MediaType.SubType "svg" }}
+            width="{{ .Width }}"
+            height="{{ .Height }}"
+          {{ end }}
+        {{ end }}
+        {{ with $altText }}alt="{{ . }}"{{ end }}
+      />
+    {{ else }}
+    
+      <!-- If local file isn't found, assume it's a remote file -->
+      {{ with ($.Destination | safeURL) }}
+        <img
+          {{ with $class }}class="{{ . }}"{{ end }}
+          loading="lazy"
+          src="{{ . }}"
+          {{ with $altText }}alt="{{ . }}"{{ end }}
+        />
+      {{ end }}
+    {{ end }}
     
-{{ else }}
-  <!-- If local file isn't found, assume it's a remote file -->
-  {{ with (.Destination | safeURL) }}
-
-    <img
-      {{ with $class }}class="{{ . }}"{{ end }}
-      loading="lazy"
-      src="{{ . }}"
-      {{ with $altText }}alt="{{ . }}"{{ end }}
-    />
-
   {{ end }}
+  
 {{ end }}