[fix] String started with at was interpreted as option

[zamentur]

The problem

Text related to an API option and starting with an at are interpreted as options and not as values !

Related issues: YunoHost/issues#2557

The solution

It's an argparse bug python/cpython#138950

Some comments suggest to use the equal notation but it doesn't work for positional arguments...

SO i found a dirty workaround cause no easy way to escape the value exists (doesn't really make sens in the usual context of argparse i guess...). I add a space at the beggining of the string and remove it just at the end of the wrapper function.

AI transparency: no AI used

PR Status

Tested manually

Code TODOs

seems ready

Tests TODOs

Indicate here tests you have already done, and tests you think should be done

• Call the code through webadmin call by hand and use a logger.warning to get the value of the return
• Change a user password starting with @ and log with it
• Test to upload a file
• Test an option allowing several values as a list

How to test