disable [ -afmprs ] name ...
       Temporarily disable the named hash table elements or patterns.  The
       default is to disable builtin commands.  This allows you to use  an
       external  command  with the same name as a builtin command.  The -a
       option causes disable to act on regular or global aliases.  The  -s
       option  causes  disable  to  act  on suffix aliases.  The -f option
       causes disable to act on shell functions.  The  -r  options  causes
       disable  to  act on reserved words.  Without arguments all disabled
       hash table elements from the corresponding hash table are  printed.
       With  the -m flag the arguments are taken as patterns (which should
       be quoted to prevent them from undergoing filename expansion),  and
       all  hash table elements from the corresponding hash table matching
       these patterns are disabled.  Disabled objects can be enabled  with
       the enable command.

       With  the option -p, name ... refer to elements of the shell's pat-
       tern syntax as described  in  the  section  `Filename  Generation'.
       Certain elements can be disabled separately, as given below.

       Note  that patterns not allowed by the current settings for the op-
       tions EXTENDED_GLOB, KSH_GLOB and SH_GLOB are  never  enabled,  re-
       gardless of the setting here.  For example, if EXTENDED_GLOB is not
       active,  the  pattern ^ is ineffective even if `disable -p "^"' has
       not been issued.  The list below indicates any option settings that
       restrict the use of the pattern.  It should be noted  that  setting
       SH_GLOB  has  a wider effect than merely disabling patterns as cer-
       tain expressions, in particular those  involving  parentheses,  are
       parsed differently.

       The  following patterns may be disabled; all the strings need quot-
       ing on the command line to prevent them from being interpreted  im-
       mediately  as  patterns  and the patterns are shown below in single
       quotes as a reminder.

       '?'    The pattern character ? wherever it occurs,  including  when
              preceding a parenthesis with KSH_GLOB.

       '*'    The pattern character * wherever it occurs, including recur-
              sive   globbing   and  when  preceding  a  parenthesis  with
              KSH_GLOB.

       '['    Character classes.

       '<' (NO_SH_GLOB)
              Numeric ranges.

       '|' (NO_SH_GLOB)
              Alternation  in  grouped  patterns,  case   statements,   or
              KSH_GLOB parenthesised expressions.

       '(' (NO_SH_GLOB)
              Grouping  using single parentheses.  Disabling this does not
              disable the use of parentheses for KSH_GLOB where  they  are
              introduced  by  a special character, nor for glob qualifiers
              (use `setopt NO_BARE_GLOB_QUAL' to disable  glob  qualifiers
              that use parentheses only).

       '~' (EXTENDED_GLOB)
              Exclusion in the form A~B.

       '^' (EXTENDED_GLOB)
              Exclusion in the form A^B.

       '#' (EXTENDED_GLOB)
              The pattern character # wherever it occurs, both for repeti-
              tion  of  a  previous  pattern  and  for indicating globbing
              flags.

       '?(' (KSH_GLOB)
              The grouping form ?(...).  Note this is also disabled if '?'
              is disabled.

       '*(' (KSH_GLOB)
              The grouping form *(...).  Note this is also disabled if '*'
              is disabled.

       '+(' (KSH_GLOB)
              The grouping form +(...).

       '!(' (KSH_GLOB)
              The grouping form !(...).

       '@(' (KSH_GLOB)
              The grouping form @(...).
