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+setopt [ {+|-}options | {+|-}o option_name ] [ -m ] [ name ... ]
+ Set the options for the shell. All options specified either
+ with flags or by name are set.
+
+ If no arguments are supplied, the names of all options currently
+ set are printed. The form is chosen so as to minimize the dif-
+ ferences from the default options for the current emulation (the
+ default emulation being native zsh, shown as <Z> in zshop-
+ tions(1)). Options that are on by default for the emulation are
+ shown with the prefix no only if they are off, while other op-
+ tions are shown without the prefix no and only if they are on.
+ In addition to options changed from the default state by the
+ user, any options activated automatically by the shell (for ex-
+ ample, SHIN_STDIN or INTERACTIVE) will be shown in the list.
+ The format is further modified by the option KSH_OPTION_PRINT,
+ however the rationale for choosing options with or without the
+ no prefix remains the same in this case.
+
+ If the -m flag is given the arguments are taken as patterns
+ (which should be quoted to protect them from filename expan-
+ sion), and all options with names matching these patterns are
+ set.
+
+ Note that a bad option name does not cause execution of subse-
+ quent shell code to be aborted; this is behaviour is different
+ from that of `set -o'. This is because set is regarded as a
+ special builtin by the POSIX standard, but setopt is not.