REGISTER(1)                 General Commands Manual                REGISTER(1)

NNAAMMEE
       register - conditional testing whether a register is defined

DDEESSCCRRIIPPTTIIOONN
       not yet defined
       now defined

       tab after identifier:    myreg is defined

       escape sequence after identifier: -myreg is defined

       backslash in name: \ is defined

       dot in name: . is defined \. is defined

       invalid escape in name: G is defined \G is defined

OpenBSD                          June 3, 2022                      REGISTER(1)