BadParameter("custom error msg") with hide_input=True doesn't show "custom error msg" (a Click issue)

[anatoli26]

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Example Code

import typer
from typer import Option
from typing_extensions import Annotated

app = typer.Typer()


def check_passwd(passwd: str) -> str:
    if len(passwd) < 8:
        raise typer.BadParameter(
            "Password must be at least 8 chars long"
        )
    return passwd


@app.command()
def setpasswd(
    passwd: Annotated[
        str,
        Option(
            prompt="Enter a secure password",
            hide_input=True,
            callback=check_passwd,
        ),
    ],
) -> None:
    print(f"Your {passwd = }")


if __name__ == "__main__":
    app()

Description

When BadParameter("custom error msg") is raised for an option with hide_input=True, it doesn't show custom error msg, but rather a generic Error: The value you entered was invalid.. This is a known issue in Click, reported 4 months ago without any reply from the maintainers: pallets/click#2809 (the issue has all the details). I believe it could be overwritten by Typer, the problem is in the termui.py line 177.

Operating System

Linux

Operating System Details

Ubuntu 24.04

Typer Version

0.15.2

Python Version

3.12

Additional Context

When the entered value for the password is less than 8 chars, the provided code outputs:

Enter a secure password: 
Error: The value you entered was invalid.
Enter a secure password: 

instead of

Enter a secure password: 
Error: Password must be at least 8 chars long.
Enter a secure password: 

this way making it impossible to communicate to the user what was the problem (length, a set of chars, repetition, etc.)