basic impl

README.md

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+This is a Firefox Addon that allows to create a ["Text Fragment"](https://developer.mozilla.org/en-US/docs/Web/URI/Fragment/Text_fragments#:%7E:text=Text%20fragments%20allow%20linking%20directly%20to%20a%20specific%20portion%20of%20text%20in%20a%20web%20document) link for the context menu.
+
+
+# installation
+
+* git clone or export this repo
+* go to page "about:debugging#/runtime/this-firefox" (or "about:debugging"  then click "/runtime/this-firefox")
+* click on "Load Temporary Add-on…" 
+* select "manifest.json" file
+
+# usage
+
+* select a text in a document,
+* right clic to have contextual menu,
+* choose "text fragment" entry
+* paste the link in an address bar or in a mail or in a chat
+
+# limitation
+
+* not packaged, only debug mode yet
+  * on the plus side, the code is so simple that you can see it won't stab you in the back
+* tested only on Firefox
+  * the other, most popular, web browser is on the evil side for a long time now
+

background.js

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+browser.contextMenus.create({
+  id: "text-fragment",
+  title: "Text Fragment",
+  contexts: ["selection"]
+});
+
+browser.contextMenus.onClicked.addListener((info) => {
+  if (info.menuItemId === "text-fragment") {
+    const selectedText = encodeURIComponent(info.selectionText);
+    const pageUrl = info.pageUrl.split('#')[0]; // Remove existing fragment, if any
+    const textToCopy = `${pageUrl}#:~:text=${selectedText}`;
+
+    navigator.clipboard.writeText(textToCopy).then(() => {
+      console.log("Text copied to clipboard");
+    }).catch(err => {
+      console.error("Could not copy text: ", err);
+    });
+  }
+});
+

manifest.json

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+{
+  "manifest_version": 2,
+  "name": "Text Fragment Copier",
+  "version": "1.0",
+  "permissions": [
+    "contextMenus",
+    "clipboardWrite",
+    "activeTab"
+  ],
+  "background": {
+    "scripts": ["background.js"]
+  },
+  "icons": {
+    "48": "icon.png"
+  }
+}