External links open in a new tab

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ

layouts/_markup/render-link.html

@@ -0,0 +1,4 @@
+{{- /* Markdown links: external ones open in a new tab */ -}}
+{{- $external := findRE `(?i)^(https?:)?//` .Destination -}}
+<a href="{{ .Destination | safeURL }}"{{ with .Title }} title="{{ . }}"{{ end }}{{ if $external }} target="_blank" rel="noopener"{{ end }}>{{ .Text }}</a>
+{{- /* no trailing newline */ -}}

layouts/_partials/entries.html

@@ -1,7 +1,7 @@
 {{/* list of {title, url, text, platform} */}}
 <dl class="entries">
   {{ range . }}
-  <dt>{{ if .url }}<a href="{{ .url }}" rel="nofollow noopener">{{ .title | default .url }}</a>{{ else }}{{ .title }}{{ end }}{{ with .platform }} <small>{{ . }}</small>{{ end }}</dt>
+  <dt>{{ if .url }}<a href="{{ .url }}"{{ partial "ext.html" .url }}>{{ .title | default .url }}</a>{{ else }}{{ .title }}{{ end }}{{ with .platform }} <small>{{ . }}</small>{{ end }}</dt>
   {{ with .text }}<dd>{{ . | markdownify }}</dd>{{ end }}
   {{ end }}
 </dl>

layouts/_partials/ext.html

@@ -0,0 +1,5 @@
+{{- /* attributes for a link to this address: external ones open in a new tab */ -}}
+{{- if findRE `(?i)^(https?:)?//` (string .) -}}
+  {{- return (` target="_blank" rel="noopener"` | safeHTMLAttr) -}}
+{{- end -}}
+{{- return ("" | safeHTMLAttr) -}}

layouts/baseof.html

@@ -31,7 +31,7 @@
   </main>
   <footer class="site-footer">
     {{ with .Params.source }}
-    <p>Recovered from the <a href="{{ .url }}">Wayback Machine capture of {{ .date }}</a>.</p>
+    <p>Recovered from the <a href="{{ .url }}"{{ partial "ext.html" .url }}>Wayback Machine capture of {{ .date }}</a>.</p>
     {{ end }}
     <p>Content © its original authors at Old-Computers.com. Rebuilt from the Internet Archive</p>
     <p><a href="{{ site.Home.RelPermalink }}members/">Members</a> -

layouts/machine-tabs/single.html

@@ -27,7 +27,7 @@
         {{ with .cover }}<img src="{{ . }}" alt="" loading="lazy">{{ end }}
         <figcaption>
           {{ if .text }}<div>{{ .text | markdownify }}</div>
-          {{ else }}<a href="{{ .url }}"><strong>{{ .title }}</strong></a>{{ end }}
+          {{ else }}<a href="{{ .url }}"{{ partial "ext.html" .url }}><strong>{{ .title }}</strong></a>{{ end }}
         </figcaption>
       </figure>
       {{ end }}