Adding upstream version 5.2.3+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

site/content/docs/5.2/examples/cheatsheet/cheatsheet.js

@@ -0,0 +1,73 @@
+/* global bootstrap: false */
+
+(() => {
+  'use strict'
+
+  // Tooltip and popover demos
+  document.querySelectorAll('.tooltip-demo')
+    .forEach(tooltip => {
+      new bootstrap.Tooltip(tooltip, {
+        selector: '[data-bs-toggle="tooltip"]'
+      })
+    })
+
+  document.querySelectorAll('[data-bs-toggle="popover"]')
+    .forEach(popover => {
+      new bootstrap.Popover(popover)
+    })
+
+  document.querySelectorAll('.toast')
+    .forEach(toastNode => {
+      const toast = new bootstrap.Toast(toastNode, {
+        autohide: false
+      })
+
+      toast.show()
+    })
+
+  // Disable empty links and submit buttons
+  document.querySelectorAll('[href="#"], [type="submit"]')
+    .forEach(link => {
+      link.addEventListener('click', event => {
+        event.preventDefault()
+      })
+    })
+
+  function setActiveItem() {
+    const { hash } = window.location
+
+    if (hash === '') {
+      return
+    }
+
+    const link = document.querySelector(`.bd-aside a[href="${hash}"]`)
+
+    if (!link) {
+      return
+    }
+
+    const active = document.querySelector('.bd-aside .active')
+    const parent = link.parentNode.parentNode.previousElementSibling
+
+    link.classList.add('active')
+
+    if (parent.classList.contains('collapsed')) {
+      parent.click()
+    }
+
+    if (!active) {
+      return
+    }
+
+    const expanded = active.parentNode.parentNode.previousElementSibling
+
+    active.classList.remove('active')
+
+    if (expanded && parent !== expanded) {
+      expanded.click()
+    }
+  }
+
+  setActiveItem()
+  window.addEventListener('hashchange', setActiveItem)
+})()