===== Oleo 1.6 =====

Many patches from volunteers have been applied.  See the ChangeLog to
determine if your favorite long-standing bug has been fixed.

The file EIGHTBIT contains some patches for Scandinavian character
support.  They correspond to version 1.5 and may require some work for
version 1.6.

===== Oleo 1.5 =====

Various bug and portability fixes.

One central keybinding has change.  `=' is now bound to set-cell instead
of edit-cell.  The difference is that edit-cell prompts you with the current
formula setting fo the cell while set-cell prompts with an empty line.

To restore the old behavior, you can put this line in your .oleorc:

	bind-key main edit-cell =

Also, when editting a cell formula, the function `insert-cell-expression'
inserts the current formula setting of a cell.  By default, it is bound to 
`M-e' (aka ESC e).

** Problems with enums
   Some user sent me mail explaining that he had problems with the way 
   enums are used in the file graph.c.  Unfortunately, i lost that mail.
   If that user sees this -- please send a message to bug-oleo@prep.ai.mit.edu.


===== Oleo 1.4 =====

A whole mess of bugfixes and portability fixes.

Oleo still does not run on systems that lack the `select' system call.
Volunteers who would like to port Oleo to such systems (perhaps
adapting code form GNU Emacs) are encouraged to write to
bug-oleo@prep.ai.mit.edu.

===== Oleo 1.3.1 =====

- Several compilation problems (io-edit.c, autoconf goodies) have been
  fixed, as well as all reported bugs.

- Date formula functions have been added using strftime, localtime, gmtime, mktime,
  GNU get_date, and GNU posixtm.  

  Oleo measures time using integers that count seconds.  Calendar dates
  (as opposed to intervals of time) are measured from 1 Jan 1970 GMT.

  The new Oleo functions are:

	  Computing times from conventional representations:

  hms_to_time		compute an interval from hours, minutes, and seconds
  dhms_to_time		compute an interval from days, hours, minutes, and seconds

  time_to_d		compute the number of days in an interval
  time_to_h		   "	 "     "   "  hours   "    "
  time_to_m 		   "	 "     "   "  minutes "    "
  time_to_s 		   "	 "     "   "  seconds "    "

  ymd			Convert a local year, month, and day to an absolute time.
  ymd_dst		The same, but perhaps overriding normal d.s.t. conventions.

  get_date		Parse a date in the style of GNU date or GNU tar.
  posix_date		Parse a date following Posix syntax.


	   Converting from absolute times to calendar times


  local_year, local_month,		These convert with respect to
  local_date, local_hour,		the local timezone.
  local_min, local_sec,
  local_isdst, local_yday, local_wday

  gmt_year, gmt_month,			These convert with respect to
  gmt_date, gmt_hour,			GMT.
  gmt_min, gmt_sec,
  gmt_isdst, gmt_yday, gmt_wday


  Finally, the miscellaneous pile:

  strftime		Format a time nicely (on-line help (^H^F) has details)


===== Oleo 1.3 =====

- Many keybindings have changed.  The new bindings more closely resemble Emacs.
  Most commands are now bound to control or meta characters.
  Alphanumeric characters begin cell entry.  There are a variety of
  new motion commands.

  The file KEYS contains a wallchart of Oleo bindings.  This file was
  derived from the output of the command `M-x write-wallchart'.

- There is now on-line help for interactive functions and formula
  expressions.  ^H is the help prefix.

- Argument prompting has changed.   Oleo's interactive behavior is now
  much less like vi, and much more like Emacs.  For example, the
  arguments to interactive functions are now prompted for indivdually
  rather than with a single readline.

- Oleo speaks gnuplot.  A series of graph commands (accessed via
  `M-g') can be used to create gnuplot graphs of data in Oleo
  spreadsheets.  X11 users can draw graphs on the screen.  Anyone can
  generate postscript.

- Tax forms!  A volunteer has created the spreadsheet irs-1992.oleo.
  It contains spreadsheets for a number of federal and State of
  Connecticut tax forms.  Thanks to Ronald Florence <ron@mlfarm.com>.

- Larger address space.  By default, Oleo now provides 16 bit cell
  addresses (there are 65535 rows and columns).



===== Oleo 1.2.2 =====

This is a bugfix release.  Nearly all bugs reported for 1.2.1 have
been fixed (a few could not be reproduced).  Many portability problems
have been fixed.

Release 1.2.2 has been built and (minimally) tested on these systems:

	RS/6000 running AIX
	Sun4 running SunOS 4.1.1
	Sun3 running SunOS 4.1.1_U1

A more significant amount of testing has been done on DECstation
5000's running Ultrix 4.2.

===== Oleo 1.2.1 =====

This is a bugfix release.  Various configuration problems and a few
trivial bugs in the 1.2 release have been repaired.

===== Oleo 1.2 =====

This is primarily a bigfix release.  In addition, there are some new features.

* New command line options

  --version or -v: print out a version number
  --quiet or -q: don't print the disclaimer
  --ignore-init-file or -f: don't read commands from .oleorc or ~/.oleorc

* New commands/Changes to commands

  write-variables:  writes to a file or pipe the values of all variables 
	that are bound to cells.  Variables bound to regions are not 
	written.

  read-variables: The inverse of write-variables.  Variables that are
	bound to a range cause an error.  Variables not bound to a
	cell are ignored.

  Format-cell and format-region can now be used to set cell fonts.

  set-region-forumla: This can be used to edit many cells at once.

  {upper,lower}-{left,right}: These commands go to extremes.  They are
  bound to M-{^Y ^U ^B and ^N}.

  {insert,delete}-{row,column}: new commands bound to ^O, ^K, M-^O, M-^K.

  {move,copy}-region: these commands now work (at least for many test cases).

  exchange-point-and-mark: ^X ^X

* File Format Changes

  SYLK mode appears to have changed at some time in the past.  Older
  (and correct, i presume)  versions write cell references in a0
  format.  The last alpha and early beta releases use rc format.  
  Now there are two file formats ``sylk'' and ``sylk-noa0''.
  If older sylk files don't work with one, they may with the other.
  Hopefully, between them, all oleo-generated sylk files can be read.
  Users are encouraged to read and write files in ``oleo'' format (the
  default).

  Oleo file format has changed in a (hopefully) upward compatable way.

  When reading sylk or oleo files, a format error now causes the read
  to be aborted.

  Oleo no longer generates a panic file on any signal (it dumps core
  like everyone else).

* X tweaks
 
  The window now has a title.

  Whatever key corresponds to Mod1Mask is treated as a meta key.

  The resources oleo.geometry, oleo.foreground and oleo.background
  have the expected effects.

* New formula functions

  In the `cells' package there is a new function vlookup_str that can
  be used to search a table, using a keyword string.  See USING.

===== Oleo 1.1 =====

Sat Nov 21 21:03:31 1992

This is a bugfix release.  Release 1.0 had a few trivial, but fatal
bugs, and didn't work at all unless you editted global.h first.  If
you had trouble with that release, please try this one.  

If formulas don't seem to work at all, or if you experience core dumps
when defining formulas, check to see that that the definition of
CELLREF in globals.h is correct for your system.  The current
definitions assume that characters are 8 bits, and the short integers
are 16 bits.

All reported bugs have been fixed.

The opening disclaimer is no longer printed if you have a .oleorc file.
