When users create/define new syntax languages through "View | User definitions" in Notepad++, it stores this data in "userDefineLang.xml".
Usually, notepad++ portable launcher moves "xml" files from "Data\settings" to root app folder when starting, and vice-versa when finishing.
Nevertheless, only userDefineLang.xml is not copied.
It would be great if the userDefineLang.xml was copied too.
Is this modification possible for the next notepad++ release?
Thanks.
This has been fixed in today's 5.5 release.
Sometimes, the impossible can become possible, if you're awesome!