Set language and language code correctly or in detail
I'm using Archlinux with Gnome, the gtranslator was installed from arch's repository, version 3.30.0. I think we should set the language and language code in profile correctly or in detail.
For example, I'm translating some gnome apps into Chinese, and I'm using the Simplified Chinese not Traditional Chinese, but there is only a "Chinese" in language setting and a "zh" in language code setting.
The language and language code should be split into "zh_CN" for "Simplified Chinese" using in mainland China, "zh_HK" and "zh_TW" for "Traditional Chinese" using in chinese hongkong and chinese taiwan, and maybe "zh_SG" for "Simplified Chinese" using in Singapore? I don't know.
What I really care about is if this header editing can affect the compile results, if is then set them correctly is very important, if not then it's optimizing more or less.