Exception when completing commands with flags in = format

[mattisafur]

What Happened?

An exception is thrown when trying to use completion on commands with flags specified in the format --<flag>=<value>. When specifying flags in the --<flag> <value> format completion works.

output looks as follows

$ minikube service list --namespace=somename [tab pressed]__minikube_handle_flag:27: bad math expression: operand expected at end of string
  minikube service list --namespace=some

[tab pressed] signifies the point where completion was called.
The prompt shows again vertically aligned to the line above.

The issue appears to happen on zsh. I also tested the scenario in bash where it worked correctly.
I tested on both "default" and "adam1" prompts, in both cases the new line was aligned.
I tried using multiple flags with one or a few using the = format and didn't see any difference based on the order of the flags (and which one is = formatted).

Tested on Ubuntu running on WSL.

output of minikube version:

minikube version: v1.34.0
commit: 210b148df93a80eb872ecbeb7e35281b3c582c61

Attach the log file

Minikube logs are not included as they don't contain any info relating to completion.

Operating System

Ubuntu

Driver

Docker