Function if

src/engine/variable.c:217–260

#ifdef OS_VMS
        else if ( ( module->name && object_equal( module->name, constant_ENVIRON ) )
                  || root_module() == module )
        {
            /* On VMS, when a variable from root or ENVIRON module is not found,
             * explicitly request it from the process.
             * By design, process variables (and logicals) are not made available
             * to C main(), and thus will not get loaded in bulk to root/ENVRON.
             * So we get around it by getting any such variable on first request.
             */
            const char * val = getenv( object_str( symbol ) );

            if ( val )
            {
                struct module_t * environ_module = module;
                char * environ[ 2 ] = { 0 }; /* NULL-terminated */
                string buf[ 1 ];

                if ( root_module() == module )
                {
                    environ_module = bindmodule( constant_ENVIRON );
                }

                string_copy( buf, object_str( symbol ) );
                string_append( buf, "=" );
                string_append( buf, val );

                environ[ 0 ] = buf->value;

                /* Load variable to global module, with splitting, for backward
                 * compatibility. Then to .ENVIRON, without splitting.
                 */
                var_defines( root_module(), environ, 1 );
                var_defines( environ_module, environ, 0 );
                string_free( buf );

                if ( module->variables && ( v = (VARIABLE *)hash_find(
                    module->variables, symbol ) ) )
                {
                    if ( DEBUG_VARGET )
                        var_dump( v->symbol, v->value, "get" );
                    result = v->value;
                }
            }
        }
#endif
    }
    return result;