preamble-file-name

# `preamble-file-name`

The file name reflects the EIP number.

## Examples

    error[preamble-file-name]: file name must reflect the preamble header `eip`
      |
    2 | eip: 3
      |     ^^ this value
      |
      = help: this file's name should be `eip-3.md`

## Explanation

`preamble-file-name` makes sure that the file name matches the `eip` front matter (or preamble) field's value.

Before an EIP Editor assigns a number, the file's name should match the `title` field's value, replacing non-letter characters with underscores, prefixed with `eip-` and suffixed with `.md` (eg. `eip-the_title_of_my_proposal.md`.)