[Feature request]: warning when using "umlaute" in Name or Location

[mmattel]

Is your feature request related to a problem? Please describe. When adding content to a device name or location, a warning should appear when using "umlaute" like äöüÄÖÜ or similars from other languages. This is relevant when using Home Assistant, as of 2022.08, the discovery fails with a warning message containing: Received message on illegal discovery topic It drove me nuts finding out... There is no need to prevent, but a warning would be very helpful.

Describe the solution you'd like When a special character (umlaut or others) is recognized in the name or location of a device when applying, a warning would be helpful telling that this name might get issues when using HA.

Describe alternatives you've considered Adding a note in the documentation, but this might get overseen easily and is not an elegant solution.

Additional context When naming the device using standard ascii, it was immediately recognized by HA.

[nurikk]

We have friendly name validation code in z2m codebase. Should be easy to implement umlaut validation there

@Koenkk

[Koenkk]

@mmattel what characters are supported?

[mmattel]

Good question. I only have experience with german umlauts which did not work with mqtt HA discovery. But I highly guess that the issue also exists when using languages like french or spanish which have accents or nordic languages or even cyrillic - without having it tried... Regarding umlaut: äöüÄÖÜß which can be replaced by ae, oe, ue, ss. This is maybe similar in other latin based langauges.

[Koenkk]

@emontnemery see discussion above, what characters are supported for the topic?

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.