More readable errors for patterns

Hi,

I'm struggling with patterns usage and proper error display.

I would like to validate a range of number values, something like `1024-2048`, and I have a pattern to express allowed number values (values between 1024 and 49151) :
`pattern: "^(102[4-9]|10[3-9][0-9]|1[1-9][0-9]{2}|[2-9][0-9]{3}|[1-3][0-9]{4}|4[0-8][0-9]{3}|490[0-9]{2}|491[0-4][0-9]|4915[01])-(102[4-9]|10[3-9][0-9]|1[1-9][0-9]{2}|[2-9][0-9]{3}|[1-3][0-9]{4}|4[0-8][0-9]{3}|490[0-9]{2}|491[0-4][0-9]|4915[01])$"`

But the output for user is displayed as:

```
07:43:09.693Z - error: PATTERN should match pattern "^(102[4-9]|10[3-9][0-9]|1[1-9][0-9]{2}|[2-9][0-9]{3}|[1-3][0-9]{4}|4[0-8][0-9]{3}|490[0-9]{2}|491[0-4][0-9]|4915[01])-(102[4-9]|10[3-9][0-9]|1[1-9][0-9]{2}|[2-9][0-9]{3}|[1-3][0-9]{4}|4[0-8][0-9]{3}|490[0-9]{2}|491[0-4][0-9]|4915[01])$"
> 4 | "ports": "3000-302"
```

which is valid, but not readable to understand what is a valid input.

I would like to know if there is a way to force a message when an error occurs, for instance to use a description instead of the pattern value, or if any other mechanism exists to provide a more readable output without the need to put logic from error report ?

Thanks for your help !

The issue does not name files, tests, or an entry point. Start by locating how better-ajv-errors formats AJV PATTERN validation errors, then review how custom messages or schema descriptions could be supplied; the work is done when the approach and expected readable output are defined and covered by tests.

Written by the indexing model from the issue text.