<!-- BEFORE SUBMITTING AN ISSUE: 1. Search for your issue on GitHub: https://github.com/prettier/prettier/issues A large number of opened issues are duplicates of existing issues. If someone has already opened an issue for what you are experiencing, you do not need to open a new issue — please add a 👍 reaction to the existing issue instead. 2. We get a lot of requests for adding options, but Prettier is built on the principle of being opinionated about code formatting. This means we have a very high bar for adding new options. Find out more: https://prettier.io/docs/en/option-philosophy.html Tip! Don't write this stuff manually. 1. Go to https://prettier.io/playground 2. Paste your code and set options 3. Press the "Report issue" button in the lower right --> As provided by @alexandrtovmach in https://github.com/gatsbyjs/gatsby/pull/18942#issuecomment-549749393, parsing zero-based lists is broken. **Prettier 1.18.2** [Playground link](https://prettier.io/playground/#N4Igxg9gdgLgprEAuEAGAdAAgDIEsDOMAOlAIxZ6EkBMFBMIANCBAA4y7T7KgCGATvwgB3AAoCE3FLwBuEXABMmIAEb9eYANZwYAZVYbcUAObIY-AK5xmACxgBbADYB1G7nj4DYOLsnvcMu4Ansjg+NzMRvhw-DCi6sb2vMgAZryO0cwAVvgAHgBC6lo6urz2cHhQcKnpmSA5ubpGxo5wAIoWEPA1GdYgBvzR-KFJ-JoKIlDKrPxGMM6KMDbIAByozDMQ0c7qrKEzcEMy1cwAjp3w8WxSILz4ALRVcArPyvxw57jv8byJyUhpXrMaL2XBmSx9fDNVodLrVAG1PowXgqBYKJbIajMcy8XCOZoAYQg9iSoSg0BOIAs0QAKiipIDogBfJlAA) ```sh --parser markdown ``` **Input:** ```md 0. List 1. List 2. List ``` **Output:** ```md 0. List 1. List 1. List ``` **Expected behavior:** ```md 0. List 1. List 2. List ```
As provided by @alexandrtovmach in gatsbyjs/gatsby#18942 (comment), parsing zero-based lists is broken.
Prettier 1.18.2
Playground link
Input:
Output:
Expected behavior: