[ComputerGuru]

As part of an automated Jira upgrade script (well, Makefile) we needed to export changes to the listener port/scheme configuration which is unfortunately stored “in the code” so to speak (in WEB-INF/web.xml) which Atlassian doesn’t deign to whitespace normally (indentation is all over the place, as is formatting, character encoding, and more) —- and they mangle it differently somehow with each point release. So the Makefile calls xmllint to normalize formatting and whitespace of both the untouched source files from the old and new release as well as the locally modified (deployed) configuration, then calls diff/patch accordingly (in a three-way).