Source Code Repository Access
Notepad++ source code repository is available on GitHub: https://github.com/notepad-plus-plus/notepad-plus-plus
Your pull requests will be welcome. However, they are not always accepted for diverse reasons. Here are the guidelines for your pull requests: https://github.com/notepad-plus-plus/notepad-plus-plus/blob/master/CONTRIBUTING.md
Notepad++ is “Made in Worldwide” and distributed outside of USA territory (both source code and binary) so there shouldn’t be ECCN issue. However you may need Notepad++ ECCN number to conforme to US law, here it is: EAR99
VPAT for Notepad++
According US law, you may need Voluntary Product Accessibility Template file for Notepad++ if you are in USA territory.
From Binary Translations page you could get the language you need.
From the v3.1, Notepad++ has the extension capacity - the plugin system. Please see Plugins HOWTO to learn how to install a plugin or/and how to develop a plugin.
If you can not find the plugin you need, just make your own.
User Defined Language files
For some reasons that some languages are not supported by Notepad++, User Language Define System can help you out in this case. This system allows user to define his own language : not only the syntax highlighting keywords definition, but also the syntax folding keywords definition, comment keywords definition and the operators definition.
You can define your language via User Language Define Dialog. However, the language you need may be already defined by someone-else in this User Defined Languages Collection.
This is one of the most asked question in the forums. Check here to have the solution.
You can find Notepad++ thong in the following online shops, as well mugs and apparels.