initial import of NetBSD tree

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diff --git a/usr.bin/vi/docs/bugs.current b/usr.bin/vi/docs/bugs.current
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+List of known bugs:
+
++ The number option doesn't display line numbers in ex append/insert
+  mode.
+
++ The option sidescroll is completely wrong, and setting it does more
+  harm than good.
+
++ When nvi edits files that don't have trailing newlines, it appends
+  one, regardless.
+
++ Open mode is not yet implemented.
+
++ ^C isn't passed to the shell in the script windows as an interrupt
+  character.
+
++ The options:
+
+	hardtabs, lisp, optimize, redraw, slowopen
+
+  are recognized, but not implemented.  These options are unlikely to
+  be implemented, so if you want them you might want to say something!
+  I will implement lisp if anyone ever documents how it worked.
+
++ Screen repainting over slow lines, for some screen changes, isn't
+  as good as the historic vi's.
+
++ The line movement commands ('k', 'j' are easy examples) don't find the
+  most attractive cursor position correctly when wrapped lines are longer
+  than 80 characters, and they're on the second or subsequent lines.
+
++ Colon commands longer than a single line cause the display to be
+  incorrect.
+
++ The usages of S_{REDRAW,REFORMAT,REFRESH,RENUMBER,RESIZE} are
+  inconsistent, and should be reviewed.  In particular, S_REFRESH
+  in any screen redraws all screens.
+
++ Historic vi permitted :g/xxx/vi, i.e. you could execute ex/vi as
+  global commands.  Need to review all of the old commands to verify
+  which ones could/could not be used as global commands.
+
++ If you run out of space in the recovery directory, the recovery
+  file is left in place.