In Ignition 7 the tag browser rejected folder names containing &.
In Ignition 8 the tag browser allows folders to use this character but system.tag.write* fails because of illegal character.
Is it possible to allow the use of ampersands in tag paths?
I would call this a bug.
Please don’t. The more names diverge from language identifier rules the more corner cases will blow up.
Allowing ampersands looks to be an oversight on our part and a ticket has been opened to correct it. In 8.0 you can create a folder with an ampersand but you won’t be able to edit a folder name to include an ampersand in the current release. The intention is for ampersands to not be allowed in Tag Folder names.
This issue was fixed in the 8.0.2 nightly build that was uploaded today (5/9).