enable [ -afmprs ] name ...
       Enable the named hash table elements, presumably disabled earlier
       with disable.  The default is to enable builtin commands.  The -a
       option causes enable to act on regular or global aliases.  The -s
       option causes enable to act on suffix aliases.  The -f option causes
       enable to act on shell functions.  The -r option causes enable to
       act on reserved words.  Without arguments all enabled hash table
       elements from the corresponding hash table are printed.  With the -m
       flag the arguments are taken as patterns (should be quoted) and all
       hash table elements from the corresponding hash table matching these
       patterns are enabled.  Enabled objects can be disabled with the
       disable builtin command.

       enable -p reenables patterns disabled with disable -p.  Note that it
       does not override globbing options; for example, `enable -p "~"'
       does not cause the pattern character ~ to be active unless the
       EXTENDED_GLOB option is also set.  To enable all possible patterns
       (so that they may be individually disabled with disable -p), use
       `setopt EXTENDED_GLOB KSH_GLOB NO_SH_GLOB'.
