Unable to unset environment variable on linux

[tobil4sk]

There is an issue where I cannot unset an environment variable when targetting neko with Haxe.

If I check the value of a variable that does not exist yet, it returns null:

Sys.getEnv("VARIABLE"); //null

Afterwards, if I set it, then I am unable to unset it. Setting it to an empty string means that getting the value of the variable will now be the empty string instead of null, whereas on Windows it deletes the variable.

Sys.putEnv("VARIABLE", "value"); // setting it
Sys.putEnv("VARIABLE", ""); // attempting to unset

Sys.getEnv("VARIABLE"); // returns ""

If I run this code on the eval target then it works properly, after setting to an empty string, Sys.getEnv returns null again. I was wrong.