Function gjs_environment_variable_is_set

util/misc.cpp:20–29

using mozilla::Err;

bool gjs_environment_variable_is_set(const char* env_variable_name) {
    const char* s = g_getenv(env_variable_name);
    if (!s)
        return false;

    if (*s == '\0')
        return false;

    return true;
}

/**
 * gjs_g_strv_concat: