::
::::  /hoon/sole/sur
  ::
^?
|%
+$  sole-action                                         ::  sole to app
  $:  id=@ta                                            ::  duct id
    $=  dat
    $%  ::  [%abo ~]                                    ::  reset interaction
        [%det sole-change]                              ::  command line edit
        [%ret ~]                                        ::  submit and clear
        [%clr ~]                                        ::  exit context
        [%tab pos=@ud]                                  ::  tab complete
    ==                                                  ::
  ==
+$  sole-buffer  (list @c)                              ::  command state
+$  sole-change                                         ::  network change
  $:  ler=sole-clock                                    ::  destination clock
      haw=@uvH                                          ::  source hash
      ted=sole-edit                                     ::  state change
  ==                                                    ::
+$  sole-clock  [own=@ud his=@ud]                       ::  vector clock
+$  sole-edit                                           ::  shared state change
  $%  [%del p=@ud]                                      ::  delete one at
      [%ins p=@ud q=@c]                                 ::  insert at
      [%mor p=(list sole-edit)]                         ::  combination
      [%nop ~]                                          ::  no-op
      [%set p=sole-buffer]                              ::  discontinuity
  ==                                                    ::
+$  sole-effect                                         ::  app to sole
  $%  [%bel ~]                                          ::  beep
      [%blk p=@ud q=@c]                                 ::  blink+match char at
      [%clr ~]                                          ::  clear screen
      [%det sole-change]                                ::  edit command
      [%err p=@ud]                                      ::  error point
      [%klr p=styx]                                     ::  styled text line
      [%mor p=(list sole-effect)]                       ::  multiple effects
      [%nex ~]                                          ::  save clear command
      [%pro sole-prompt]                                ::  set prompt
      [%sag p=path q=*]                                 ::  save to jamfile
      [%sav p=path q=@]                                 ::  save to file
      [%tab p=(list [=cord =tank])]                     ::  tab-complete list
      [%tan p=(list tank)]                              ::  classic tank
  ::  [%taq p=tanq]                                     ::  modern tank
      [%txt p=tape]                                     ::  text line
      [%url p=@t]                                       ::  activate url
  ==                                                    ::
+$  sole-command                                        ::  command state
  $:  pos=@ud                                           ::  cursor position
      say=sole-share                                    ::  cursor
  ==                                                    ::
+$  sole-prompt                                         ::  prompt definition
  $:  vis=?                                             ::  command visible
      tag=term                                          ::  history mode
      cad=styx                                          ::  caption
  ==                                                    ::
+$  sole-share                                          ::  symmetric state
  $:  ven=sole-clock                                    ::  our vector clock
      leg=(list sole-edit)                              ::  unmerged edits
      buf=sole-buffer                                   ::  sole state
  ==                                                    ::
::                                                      ::
::                                                      ::
++  sole-dialog                                         ::  standard dialog
  |*  out=$-(* *)                                       ::  output structure
  $-(sole-input (sole-result out))                      ::  output function
::                                                      ::
+$  sole-input  tape                                    ::  prompt input
++  sole-result                                         ::  conditional result
  |*  out=$-(* *)                                       ::  output structure
  $@(@ud (sole-product out))                            ::  error position
::                                                      ::
++  sole-product                                        ::  success result
  |*  out=$-(* *)                                       ::
  %+  pair  (list tank)                                 ::
  %+  each  (unit out)                                  ::  ~ is abort
  (pair sole-prompt (sole-dialog out))                  ::  ask and continue
::                                                      ::
+$  sole-gen                                            ::  XX virtual type
  $%  [%say $-((sole-args) (cask))]                     ::  direct noun
      [%ask $-((sole-args) (sole-product (cask)))]      ::  dialog
  ==                                                    ::
++  sole-args                                           ::  generator arguments
  |*  _[* *]                                            ::
  ,[[now=@da eny=@uvJ bek=beak] [,+<- ,+<+]]            ::
--