106 lines
4.9 KiB
Markdown
106 lines
4.9 KiB
Markdown
<!--
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***************************************************************************
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* (C)opyright 2026 by Ruben Carlo Benante *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see http://www.gnu.org/licenses/. *
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* *
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* Contact author at: *
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* Ruben Carlo Benante *
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* rcb@beco.cc *
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***************************************************************************
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-->
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# Zettelclean
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Keep a Zettelkasten filename's slug in sync with the note's H1 heading.
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Zettelclean resolves the "three sources of truth for a title" problem (filename vs H1 vs
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YAML `title:`) by separating concerns:
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- The **H1 heading** in the note body is the single source of truth for the human title.
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- The **filename** is a derived machine identity: `TIMEID-slug(H1).md`.
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- No YAML is written. Files stay pure Markdown.
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It is a small, one-way, prefix-gated renamer: edit the H1, and a moment later the filename's
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slug tail follows. Nothing else is touched.
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## How it works
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- A note is a zettel when its filename starts with a **TIMEID**: a run of 12 to 18 digits
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(a timestamp), for example `20260728145404-my-note.md`. Files without that prefix are
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ignored, so plain notes, daily notes, Excalidraw and Kanban files are never renamed.
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- The TIMEID is minted **once** and never changes. Only the slug tail is regenerated.
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- When you edit the H1, zettelclean waits about 5 seconds of idle, then renames the file to
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`TIMEID-slug(H1).md` using Obsidian's own rename (so backlinks are updated). A 10 second
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cooldown prevents a just-renamed file from being renamed again.
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- Sync is strictly one-way, H1 to filename. Renaming a file by hand is never fought.
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- Delete the H1 and the filename collapses back to the bare `TIMEID.md`.
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The slug is lowercase, ASCII, dash-separated: accents are folded (`Ciências` becomes
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`ciencias`), runs of punctuation and whitespace collapse to a single dash, and leading and
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trailing dashes are trimmed.
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## Creating notes
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Use Obsidian's built-in **Unique note creator** core plugin to mint the TIMEID:
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1. Settings -> Core plugins -> enable "Unique note creator".
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2. Set "Unique note format" to `YYYYMMDDHHmmss` (14 digits, second precision - avoids
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same-minute collisions).
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3. Click the "Create new unique note" ribbon icon. You get `20260728145404.md`; type your
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`# Title`, and zettelclean takes over from there.
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Zettelclean also accepts an existing 12-digit (`YYYYMMDDHHmm`) vault if you prefer not to
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change the setting.
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### Retrofitting existing notes
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Notes created before you adopted this workflow have no TIMEID. Right-click such a note in the
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file explorer and choose **"Add zettel TIMEID to filename"**. It mints a fresh timestamp,
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prepends it, and the note is now a zettel that syncs on future H1 edits.
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## Pretty sidebar (optional)
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By default the file explorer shows the slugged filename (with dashes). If you want the sidebar,
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tabs and graph to show the pretty H1 instead - with no YAML in your files - install the
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**Front Matter Title** community plugin and set its feature templates to:
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```
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#heading | _basename
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```
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That reads the first H1 directly and falls back to the filename when there is none.
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## Settings
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None. Zettelclean is zero-config in this version. The 5 second settle and 10 second cooldown
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are fixed.
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## Development
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- `npm install` (or `pnpm install`).
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- `npm run dev` - compile in watch mode.
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- `npm run build` - typecheck and produce `main.js`.
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- `npm test` - run the slug unit tests on Node's built-in test runner.
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- `npm run lint` - eslint with the Obsidian ruleset.
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The pure string logic lives in `src/slug.ts` and is unit-tested in isolation; the Obsidian
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wiring lives in `src/main.ts`.
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## License
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GNU General Public License v3.0 or later (`GPL-3.0-or-later`).
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Copyright (C) 2026 Ruben Carlo Benante (Dr. Béco) <rcb@beco.cc>.
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See [LICENSE](LICENSE) for the full text.
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