# lang/current Get or set the process-wide current language. With no argument, returns the active language: the host's `--lang` flag if set, else `$LANG` with region/encoding stripped (`es_ES.UTF-8` → `"es"`, `C`/`POSIX` → `"en"`), else `"en"`. With an argument, sets it process-wide and returns the argument. ## Syntax

[lang/current]
[lang/current $lang]

## Parameters - `$lang` — (optional) language code (string or keyword, e.g. `:fr` or `"fr"`) ## Examples

[lang/current]        # → "es"  (under LANG=es_ES.UTF-8)
[lang/current :fr]    # → :fr   (sets process-wide)
[lang/current]        # → "fr"

## Returns String when reading. When setting, the argument value as passed (keyword or string). `%Err{:message}` when the argument is not a string or keyword. ## See Also `lang/get`, `lang/langs`, `lang/load`