Description

Create an enumeration, an error proc-macro derive panicked message: "" occurs when inputting most non-English languages as its value.

Steps to Reproduce

1. Add SeaORM version 0.12.0 or above to the project.
2. Use the command sea-orm-cli generate entity -u sqlite://any.sqlite to create any entity.
3. Add an enumeration to the created table and use a non-English language as its value.

Expected Behavior

The enumeration should be able to handle all supported characters without any errors.

Actual Behavior

An error occurs when most non-English languages are used as the enumeration value: proc-macro derive panicked message: "".

Reproduces How Often

The issue is consistently reproducible.

Workarounds

No workaround has been identified yet.

Reproducible Example

Please refer to this example link: Reproducible Example

#[derive(Clone, Debug, PartialEq, Eq, EnumIter, DeriveActiveEnum)]
#[sea_orm(rs_type = "String", db_type = "String(None)", enum_name = "status")]
pub enum Status {
    // #[sea_orm(string_value = "Open")]
    // #[sea_orm(string_value = "열려 있는")]

    // The following situations
    // proc-macro derive panicked message: `""` is not a valid identifier
    #[sea_orm(string_value = "打开")]
    // #[sea_orm(string_value = "開ける")]
    // #[sea_orm(string_value = "Нээлттэй")]
    // #[sea_orm(string_value = "Открыть")]
    // #[sea_orm(string_value = "يفتح")]
    Open,
    #[sea_orm(string_value = "Close")]
    Close,
}

Versions

SeaORM version: 0.12.0 and above.