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has-unicode =========== Try to guess if your terminal supports unicode ```javascript var hasUnicode = require("has-unicode") if (hasUnicode()) { // the terminal probably has unicode support } ``` ```javascript var hasUnicode = require("has-unicode").tryHarder hasUnicode(function(unicodeSupported) { if (unicodeSupported) { // the terminal probably has unicode support } }) ``` ## Detecting Unicode What we actually detect is UTF-8 support, as that's what Node itself supports. If you have a UTF-16 locale then you won't be detected as unicode capable. ### Windows Since at least Windows 7, `cmd` and `powershell` have been unicode capable, but unfortunately even then it's not guaranteed. In many localizations it still uses legacy code pages and there's no facility short of running programs or linking C++ that will let us detect this. As such, we report any Windows installation as NOT unicode capable, and recommend that you encourage your users to override this via config. ### Unix Like Operating Systems We look at the environment variables `LC_ALL`, `LC_CTYPE`, and `LANG` in that order. For `LC_ALL` and `LANG`, it looks for `.UTF-8` in the value. For `LC_CTYPE` it looks to see if the value is `UTF-8`. This is sufficient for most POSIX systems. While locale data can be put in `/etc/locale.conf` as well, AFAIK it's always copied into the environment.
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