JIRA Link will detect the current issue you are working on and will display a link in the status bar.
The detection of the issue use the current git branch name. Your Git branch name need to be prefixed by the JIRA issue.
See Change log
This extension contributes the following settings:
jiraLink.instanceUrl
: Set the base url of your JIRA instancejiraLink.ticketRegexp
: Regexp for matching ticket number