Hi, Antonio.
The operator '~' in JQL works with whole words, searching for the words in the search or derivatives (for example 'goes' is a derivative of 'go'), a fuzzy match. It won't match if a word contains part of the words in your search.
What is probably happening is that the '-' is considered as a word separator, so "182_INC-EXT" is considered as 2 words "182_INC" and "EXT", so it is found by the search, while '_' is probably not considered a word separator, so "182_EXT" is considered a single word and it is not a derivative of 'EXT' (which is not even an English word), so it is not found.
I did not understand if you want the issues with "182_EXT" and "182_INC-EXT" to be found or not.
If you want them to be found, you could take advantage of wild cards. Unfortunately it is not possible to add wild card in the beginning of a word, otherwise you could make "182_EXT" be found by doing "*EXT" ('*' is the wild card). There is already a feature request to allow this feature: https://jira.atlassian.com/browse/JRA-6218. If that is what you want, you should add yourself as a watcher to this improvement request, so you are notified if they allow wild cards in the beginning.
If you want them not to be found, that would probably require something more advanced.
You can read more about advanced search with JQL here: https://confluence.atlassian.com/display/JIRA/Advanced+Searching.
You can read more about wild cards here: https://confluence.atlassian.com/display/JIRA/Performing+Text+Searches.
I hope it was helpful.
Kind regards.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.