v0.2.0: mark recurring to-dos with a recurrence symbol

- Detect recurrence via the 'recurring' tag maintained by the Repeating
  To-Dos plugin (v2 stores recurrence in userData, not the note body, so
  tag-presence is the correct signal — not body scanning)
- DataAdapter gains getNoteTagTitles; lookup runs for to-dos only (notes
  can't recur), keeping extra API calls minimal
- GtdEvent.isRecurring threaded through collector and payload
- Webview shows ↻ to the right of any icon/glyph across all views:
  strip tiles, hover-card rows, month-grid chips, unscheduled chips
- RECURRING_TAG constant leaves room for a future configurable tag name
- README documents the pairing; SPEC roadmap marks Option A shipped
- Version bumped to 0.2.0; 2 new tests (49 total)

README.md

@@ -75,6 +75,12 @@ Goes in any note or to-do that should appear on the calendar. **An empty block i
 
 To-dos keep being real Joplin to-dos throughout — due dates still sort, alarm, and sync exactly as before. Completed to-dos render checked and struck through.
 
+## Repeating to-dos
+
+GTD Calendar plays nicely with the **[Repeating To-Dos](https://joplinapp.org/plugins/plugin/com.github.TheScriptingGuy.joplin-plugin-repeating-todos/)** plugin (v2). Install it, set a to-do to repeat (e.g. every Tuesday), and that to-do appears on the calendar at its next due date like any other — no extra setup. Recurring to-dos are marked with a ↻ symbol so you can tell them apart at a glance.
+
+Because that plugin keeps a recurring to-do as a single item at its *next* due date, the calendar shows the next occurrence rather than every future one. Recurrence is detected via the `recurring` tag the plugin maintains; if you use a different recurrence tool that tags its to-dos `recurring`, the ↻ will appear for those too.
+
 ## Drilldown
 
 Everything is clickable: single-event tiles, every row of a multi-event hover card, every chip in the month grid, every Unscheduled chip. Clicking opens the source note.

SPEC.md

@@ -188,7 +188,7 @@ Recorded direction, not commitments. Each gets a focused design pass before work
 
 Recurrence itself is delegated to an existing community plugin (open-environment approach; we don't reimplement it). Candidates evaluated: BeatLink's original *Repeating To-Dos* (unmaintained), the *[Revived]* fork (maintained, GitHub issues only), and *Repeating To-dos v2* by TheScriptingGuy (`com.github.TheScriptingGuy.joplin-plugin-repeating-todos`, best-documented). All share the same mechanic: on completion the to-do's alarm date is reset to the next occurrence and the to-do is unmarked — so at any moment a recurring to-do is a **single** to-do at its next due date, with the recurrence rule stored in the note body.
 
-- **Option A (chosen for 0.2.0):** detect the recurrence marker in the body and tag those events with a ↻ glyph. No series projection — the to-do shows at its next due date like any dated to-do. Minimal, robust, no hard coupling to another plugin's body format.
+- **Option A (shipped in 0.2.0):** detect recurrence and mark those events with a ↻ glyph. *Implementation note:* v2 of the plugin stores recurrence in Joplin's `userData` (not the note body) and maintains a `recurring` **tag** as its query index — so detection is by tag presence on to-dos (constant `RECURRING_TAG`), not body-scanning. Cleaner than the originally-planned body parse, and reuses the tag-fetching the kanban work will need. No series projection — the to-do shows at its next due date.
 - **Option B (in pocket):** parse the recurrence rule and project all future occurrences across the visible window. Deferred because the body format has proven to be a moving target across forks; promote to a 0.2.x only if Option A's single-occurrence view proves insufficient, and target a specific fork's format at that time.
 - **README:** recommend the maintained fork (v2 first, Revived as fallback); warn about the known "recurrence block injected into all notes" failure mode; note coexistence (their plugin moves the anchor, ours draws the marker).
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "joplin-plugin-gtd-calendar",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "scripts": {
     "test": "jest",
     "dist": "webpack --env joplin-plugin-config=buildMain && webpack --env joplin-plugin-config=buildExtraScripts && webpack --env joplin-plugin-config=createArchive",

src/Gtd/collectEvents.ts

@@ -1,4 +1,10 @@
-import { CalendarConfig, DataAdapter, GtdEvent, RawNote } from "./types";
+import {
+	CalendarConfig,
+	DataAdapter,
+	GtdEvent,
+	RawNote,
+	RECURRING_TAG,
+} from "./types";
 import resolveScopedFolderIds from "./folderScope";
 import extractGtdBlock from "./gtdBlock";
 import { resolveEventDate } from "./resolveDate";
@@ -44,7 +50,7 @@ export default async function collectEvents(
 			scannedNotes += 1;
 			if (note.id === calendarNoteId) continue;
 
-			const event = noteToEvent(note, config, warnings);
+			const event = await noteToEvent(adapter, note, config, warnings);
 			if (event) events.push(event);
 		}
 	}
@@ -59,11 +65,12 @@ export default async function collectEvents(
 	};
 }
 
-function noteToEvent(
+async function noteToEvent(
+	adapter: DataAdapter,
 	note: RawNote,
 	config: CalendarConfig,
 	warnings: string[]
-): GtdEvent | null {
+): Promise<GtdEvent | null> {
 	const mode = note.is_todo ? config.todos : config.notes;
 	if (mode === "none") return null;
 
@@ -81,6 +88,13 @@ function noteToEvent(
 		warnings.push(`"${note.title}": unparseable date "${block.date}"`);
 	}
 
+	// Only to-dos can recur; skip the tag lookup for plain notes.
+	let isRecurring = false;
+	if (note.is_todo) {
+		const tags = await adapter.getNoteTagTitles(note.id);
+		isRecurring = tags.includes(RECURRING_TAG);
+	}
+
 	return {
 		id: note.id,
 		title: block && block.title ? block.title : note.title,
@@ -92,6 +106,7 @@ function noteToEvent(
 		icon: block ? block.icon : null,
 		text: block ? block.text : null,
 		updatedTime: note.updated_time,
+		isRecurring,
 	};
 }
 

src/Gtd/types.ts

@@ -55,6 +55,8 @@ export interface GtdEvent {
 	icon: string | null;
 	text: string | null;
 	updatedTime: number;
+	/** True when the to-do carries the recurrence index tag (see RECURRING_TAG). */
+	isRecurring: boolean;
 }
 
 export interface RawFolder {
@@ -66,4 +68,14 @@ export interface RawFolder {
 export interface DataAdapter {
 	getFolders(): Promise<RawFolder[]>;
 	getNotesInFolder(folderId: string): Promise<RawNote[]>;
+	/** Lowercased tag titles for a note. Used to detect recurrence. */
+	getNoteTagTitles(noteId: string): Promise<string[]>;
 }
+
+/**
+ * Tag maintained by the "Repeating To-Dos" plugin family as a query index
+ * for recurring to-dos. We treat its presence as the recurrence signal.
+ * Kept as a constant so a future `recurring-tag:` config option (or a
+ * switch to a different recurrence plugin) is a one-line change.
+ */
+export const RECURRING_TAG = "recurring";

src/gtd-calendar-webview.js

@@ -86,6 +86,12 @@
 		return event.completed ? "☑" : "☐";
 	}
 
+	// Recurrence mark, shown to the right of any icon/glyph.
+	var RECUR_MARK = "↻";
+	function recurSuffix(event) {
+		return event.isRecurring ? " " + RECUR_MARK : "";
+	}
+
 	function renderPayload(el, payload, contentScriptId) {
 		el.innerHTML = "";
 
@@ -188,11 +194,11 @@
 			const icon = document.createElement("span");
 			icon.className = "event";
 			if (first.fgColour) icon.style.color = first.fgColour;
-			icon.textContent = first.icon
-				? first.icon
-				: first.title.slice(0, 2);
+			icon.textContent =
+				(first.icon ? first.icon : first.title.slice(0, 2)) +
+				recurSuffix(first);
 			if (group.events.length > 1) {
-				icon.textContent += "+" + (group.events.length - 1);
+				icon.textContent += " +" + (group.events.length - 1);
 			}
 			tile.appendChild(icon);
 
@@ -237,7 +243,8 @@
 
 			const title = document.createElement("p");
 			title.className = "title";
-			title.textContent = typeGlyph(event) + " " + event.title;
+			title.textContent =
+				typeGlyph(event) + recurSuffix(event) + " " + event.title;
 			if (event.completed) title.style.textDecoration = "line-through";
 			row.appendChild(title);
 
@@ -319,6 +326,7 @@
 				chip.className = "gtd-grid-chip gtd-calendar-clickable";
 				chip.textContent =
 					(event.icon ? event.icon : typeGlyph(event)) +
+					recurSuffix(event) +
 					" " +
 					event.title;
 				chip.style.backgroundColor =
@@ -371,6 +379,7 @@
 			item.className = "gtd-calendar-clickable";
 			item.textContent =
 				(event.icon ? event.icon : typeGlyph(event)) +
+				recurSuffix(event) +
 				" " +
 				event.title;
 			if (event.bgColour) item.style.backgroundColor = event.bgColour;

src/index.ts

@@ -34,6 +34,14 @@ const joplinAdapter: DataAdapter = {
 			fields: NOTE_FIELDS,
 		});
 	},
+
+	async getNoteTagTitles(noteId: string): Promise<string[]> {
+		const tags = await fetchAllPages<{ title: string }>(
+			["notes", noteId, "tags"],
+			{ fields: ["title"] }
+		);
+		return tags.map((tag) => (tag.title || "").toLowerCase());
+	},
 };
 
 async function fetchAllPages<T>(path: string[], query: any): Promise<T[]> {

src/manifest.json

@@ -2,7 +2,7 @@
   "manifest_version": 1,
   "id": "com.victorwiebe.joplin.plugin.gtd-calendar",
   "app_min_version": "2.7",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "name": "GTD Calendar",
   "description": "Day, week, and month calendars populated by your notes and to-dos, with click-through to the source note. Configure with simple YAML blocks. A GTD-friendly fork of Event Calendar by Franco Speziali.",
   "author": "Victor Wiebe",

src/tests/Gtd/groupEvents.test.ts

@@ -13,6 +13,7 @@ function makeEvent(overrides: Partial<GtdEvent>): GtdEvent {
 		icon: null,
 		text: null,
 		updatedTime: 0,
+		isRecurring: false,
 		...overrides,
 	};
 }

src/tests/Gtd/gtd.test.ts

@@ -222,11 +222,18 @@ describe("date resolution", () => {
 // collectEvents (inclusion matrix + sorting, via a mock adapter)
 // ---------------------------------------------------------------------------
 
-function makeAdapter(folders: RawFolder[], notes: RawNote[]): DataAdapter {
+function makeAdapter(
+	folders: RawFolder[],
+	notes: RawNote[],
+	recurringIds: string[] = []
+): DataAdapter {
+	const recurring = new Set(recurringIds);
 	return {
 		getFolders: async () => folders,
 		getNotesInFolder: async (folderId: string) =>
 			notes.filter((n) => n.parent_id === folderId),
+		getNoteTagTitles: async (noteId: string) =>
+			recurring.has(noteId) ? ["recurring"] : [],
 	};
 }
 
@@ -348,3 +355,59 @@ describe("collectEvents", () => {
 		expect(result.events.map((e) => e.id)).toEqual(["n1", "t1", "n2"]);
 	});
 });
+
+describe("collectEvents — recurrence detection", () => {
+	const folders: RawFolder[] = [{ id: "blogs", parent_id: "root" }];
+
+	const recurringTodoBody = "```gtd\n```";
+	const notes: RawNote[] = [
+		makeNote({
+			id: "rt",
+			title: "Repeating blog post",
+			parent_id: "blogs",
+			is_todo: 1,
+			todo_due: new Date(2026, 6, 14).getTime(),
+			body: recurringTodoBody,
+		}),
+		makeNote({
+			id: "ot",
+			title: "One-off todo",
+			parent_id: "blogs",
+			is_todo: 1,
+			todo_due: new Date(2026, 6, 15).getTime(),
+			body: "```gtd\n```",
+		}),
+		makeNote({
+			id: "rn",
+			title: "Note that happens to carry the tag",
+			parent_id: "blogs",
+			body: "```gtd\ndate: 2026-07-16\n```",
+		}),
+	];
+
+	test("a to-do with the recurring tag is flagged isRecurring", async () => {
+		const result = await collectEvents(
+			makeAdapter(folders, notes, ["rt"]),
+			"calendar-note",
+			"blogs",
+			parseCalendarConfig({ todos: "all", notes: "all" })
+		);
+		const recurring = result.events.find((e) => e.id === "rt")!;
+		const oneOff = result.events.find((e) => e.id === "ot")!;
+		expect(recurring.isRecurring).toBe(true);
+		expect(oneOff.isRecurring).toBe(false);
+	});
+
+	test("plain notes are never flagged recurring even if tagged", async () => {
+		// "rn" is in the recurring set but is a note, not a todo — the tag
+		// lookup is skipped for notes, so it must come back false.
+		const result = await collectEvents(
+			makeAdapter(folders, notes, ["rn"]),
+			"calendar-note",
+			"blogs",
+			parseCalendarConfig({ todos: "all", notes: "all" })
+		);
+		const note = result.events.find((e) => e.id === "rn")!;
+		expect(note.isRecurring).toBe(false);
+	});
+});