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      1 #	@(#)autowrite	8.3 (Berkeley) 2/17/95
      2 
      3 Vi autowrite behavior, the fields with *'s are "don't cares".
      4 
      5 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
      6 Commands that are affected only by autowrite:
      7 
      8 Command	File		Autowrite?	Action:
      9 	modified?
     10 -----------------------------------------------
     11 ^Z	Y		Y		Write file and suspend.
     12 ^Z	Y		N		Suspend.
     13 ^Z	N		*		Suspend.
     14 
     15 # This behavior is NOT identical to :edit.
     16 ^^	Y		Y		Write file and jump.
     17 ^^	Y		N		Error.
     18 ^^	N		*		Jump.
     19 
     20 # The new nvi command ^T (:tagpop) behaves identically to ^].
     21 # This behavior is identical to :tag, :tagpop, and :tagpush with
     22 # force always set to N.
     23 ^]	Y		Y		Write file and jump.
     24 ^]	Y		N		Error.
     25 ^]	N		*		Jump.
     26 
     27 # There's no way to specify a force flag to the '!' command.
     28 :!	Y		Y		Write file and execute.
     29 :!	Y		N		Warn (if warn option) and execute.
     30 :!	N		*		Execute.
     31 
     32 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
     33 Commands that are affected by both autowrite and force:
     34 
     35 NOTE: the "force" flag is never passed on, i.e. the write
     36 to the file caused by the autowrite flag is never forced.
     37 
     38 Command	File		Autowrite?	Force? 	Action:
     39 	modified?			(!)
     40 -------------------------------------------------------
     41 # The first rule (YYY) is historic practice, but seems wrong.
     42 # In nvi, :next and :prev commands behave identically to :rewind.
     43 :next 	Y		Y		Y	Write changes and jump.
     44 :next 	Y		Y		N	Write changes and jump.
     45 :next 	Y		N		Y	Abandon changes and jump.
     46 :next 	Y		N		N	Error.
     47 :next 	N		*		*	Jump.
     48 
     49 :rewind	Y		Y		Y	Abandon changes and jump.
     50 :rewind	Y		Y		N	Write changes and jump.
     51 :rewind	Y		N		Y	Abandon changes and jump.
     52 :rewind	Y		N		N	Error.
     53 :rewind	N		*		*	Jump.
     54 
     55 # The new nvi commands, :tagpop and :tagtop, behave identically to :tag.
     56 # Note, this behavior is the same as :rewind and friends, as well.
     57 :tag	Y		Y		Y	Abandon changes and jump.
     58 :tag	Y		Y		N	Write changes and jump.
     59 :tag	Y		N		Y	Abandon changes and jump.
     60 :tag	Y		N		N	Error.
     61 :tag	N		*		*	Jump.
     62 
     63 # The command :suspend behaves identically to :stop.
     64 :stop	Y		Y		Y	Suspend.
     65 :stop	Y		Y		N	Write changes and suspend.
     66 :stop	Y		N		Y	Suspend.
     67 :stop	Y		N		N	Suspend.
     68 :stop	N		*		*	Suspend.
     69 
     70 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
     71 Commands that might be affected by autowrite, but aren't:
     72 
     73 Command	File		Autowrite?	Force? 	Action:
     74 	modified?			(!)
     75 -------------------------------------------------------
     76 #:ex, and :vi (executed while in vi mode) behave identically to :edit.
     77 :edit 	Y		*		Y	Abandon changes and jump.
     78 :edit 	Y		*		N	Error.
     79 :edit 	N		*		*	Jump.
     80 
     81 :quit	Y		*		Y	Quit.
     82 :quit	Y		*		N	Error.
     83 :quit	N		*		*	Quit.
     84 
     85 :shell	*		*		*	Execute shell.
     86 
     87 :xit	Y		*		*	Write changes and exit.
     88 :xit	N		*		*	Exit.
     89