Tags are created case-sensitive but tag filters are case-insensitive

[mkne]

When adding tags to parts it might happen that someone enters a tag name with just a difference in upper or lower case of letters. For example a tag might be "newTag" but a user accidentally might type "newtag" which will create a new tag with that name. So in future you will have "newTag" and "newtag" in the dropdown list of available tags.

Now when you want to filter for parts with the wrong tag "RoHs" also the parts with tag "RoHS" will show up.
Filter settings:

Filter result:

Possible solutions:

1. harmonize tags (some websites always store tags in lower case) (not my preferred solution as some users might use Camel Case for their tags)
2. discipline users to not create duplicate tags with wrong spelling (more difficult, the bigger your user base is) or only allow predefined tags (normal users are not allowed to create new tags)
3. having something like "alternative names" in manufacturer or category where you can define different variants of spelling for a tag (I already use this heavily for manufacturers and categories because we import a lot from different info providers)
4. ... (maybe someone has an even better solution)