Don't rebase for some additional known prefixes to avoid that the links break when contained in an injected page snippet. This can certainly be made more generic, but for now, it hurts only for the tel links and is a good enough fix for me

Author: pilz

CHANGES.md

@@ -130,6 +130,7 @@
 
 ### Features
 
+-   pat-inject:  Don't rebase for some additional known prefixes to avoid that the links break when contained in an injected page snippet.
 -   pat-gallery: Allow adding images directly to the gallery.
 -   pat-validation: Allow for HTML5 style `required` attributes without a value.
 -   pat-validation: Added the possibility to check for fields equality

src/pat/inject/index.html

@@ -420,7 +420,7 @@ <h3>Inject and fix URLs of options</h3>
                 class="pat-inject"
                 data-pat-inject="url:./index.html#rebase-url-demo; target: self::element"
             >
-              injection happens here!
+              injection happens here! <a href="tel:3632347">Call for help</a>
             </button>
           </div>
         </section>

src/pat/inject/inject.js

@@ -911,6 +911,11 @@ const inject = {
                     value.slice(0, 2) !== "@@" &&
                     value[0] !== "#" &&
                     value.slice(0, 7) !== "mailto:" &&
+                    value.slice(0, 4) !== "tel:" &&
+                    value.slice(0, 4) !== "fax:" &&
+                    value.slice(0, 7) !== "callto:" &&
+                    value.slice(0, 10) !== "ts3server:" &&
+                    value.slice(0, 6) !== "teams:" &&
                     value.slice(0, 11) !== "javascript:"
                 ) {
                     value = utils.rebaseURL(base, value);