15/Aug/05 added funcdef, spawn, and after APIs
  yorick/{funcdef.c,spawn.c,task.c} play/unix/uspawn.c play/win/wspawn.c
  fixed bug in yorick/binpdb.c that made pdb files containing
    pointers written by 1.5 unreadable by 1.6

16/Jun/05  Many minor fixes and additions:
1. Makefile,yorapi.sh,yorick/yconfig.sh - added -n flag for tail
2. hex/hex.i - added HX_block, HX_blkbnd definitions (so test.i runs)
3. hex/{tools.[ch],hex24.c,hex5.c} - tri_find fixes a SIGFPE
4. i/cheby.i - new cheby_poly function
5. i/regress.i - new linear regression package
6. play/unix/config.sh,others - changed variable name EXTRA_LIBS to ALT_LIBS
7. play/x11/xconfig.sh - added branches to find lib64, e.g.- /usr/X11R6/lib64
8. yorick/ops2.c - added errno check to PowerLD, PowerDD
9. yorick/bcast.c - fixed bug in x(-,,-,)*y broadcasting

12/Mar/05  Huge changes, major items are:

1. The original plug_in and autoload system (see 5/Sep/04 below)
   has been completely revamped to make a true "package" system.
   Read the final chapter of doc/yorick.pdf for details.  The
   bottom line is that #include on a .i file which declares the
   interface to a plugin (dynamically linked compiled code) now
   makes the compiled functions available in such a way that the
   end user doesn't even need to know it was compiled and not
   interpreted.  The autoload function means that most packages
   need no explicit #include in order to use them; #include now
   is used almost exclusively for code you are actively developing.

2. The Makefile system for compiled yorick add-ons has completely
   changed.  This will require reworking both your Makefiles and
   the .i file(s) which declare the compiled functions to be changed.
   Read the completely new final section in the manual (doc/yorick.pdf).
   Short story:
   a. Add a plug_in command (help,plug_in) to the top of any .i
      file which declares a compiled (builtin) function, and remove
      any MAKE-INSTRUCTIONS comment.
   b. Rename your Makefile to Makefile.sav, then run
        yorick -batch make.i
      This makes a good first cut at the new Makefile.  Merge anything
      the new make.i missed (including any PKG_DEPLIBS) back from
      your original Makefile.sav into the new Makefile.
   Look in the drat, hex, or mpy directories for examples of the
   new style of package Makefile.  You can practice in the extend/
   subdirectory.  Get the yorick-z-1.0 package for an example of
   a compiled package which is not part of this distribution.

3. The string manipulation functions have been dramatically extended.
   New functions include strgrep, strglob, strfind, streplace,
   strcase, a new string-to-char-to-string converter strchar, and
   a powerfully extended strpart.  Do help,string for details.

4. The yorick user manual and quick reference cards have been updated.
   Several new features have been added to the i/ interpreted library,
   such as Poisson deviates in random.i, and IEEE 754 support in ieee.i.
   Also a pdf command has been added as a companion to the eps and hcps
   commands, which may enable Mac and Windows users to more easily
   import yorick graphics into PowerPoint (TM).

------------------------------------------------------------------------

5/Sep/04 added autoload function and i-start directory search, changed
  semantics and improved plug_in function
i0/{std.i,stdx.i}, yorick/{yio.[ch],yinput.c,task.c,autold.c}, others
  read documentation for autoload and plug_in functions
  yorick packages should now place autoload files in Y_SITE/i-start
  or Y_HOME/i-start in order to automatically be included at startup

4/Jun/04  ************ added plug_in function for dynamic linking ********
  see yorick/README.2 and play/unix/PLUGIN.txt

16/Apr/04
yorick/array.c   fixed egregious buffer overrun bug in x(i,..)

18/Feb/04
emacs/yorick.el  fixed compatibility issue with emacs 21.3 sel-mouse

11/Feb/04
play/unix/fpuset.c,config.sh
  desperate attempt to work around severe Apple bugs in MacOS X 10.3
  see MACOSX10.3 here and
    ftp://ftp-icf.llnl.gov/pub/Yorick/unix/macosx-10.3-fix.tgz

8/Jan/04
hex/{tools.[ch],hex.c,hex5.c,hex24.c,hydram.c}  bug fixes in ray tracker
  main problem is reflecting boundaries, caused SIGFPE and SIGSEGV

12/Nov/03
play/unix/uevent.c  workaround for MacOS 10.3 poll bug (libc)
play/playgl.h, play/x11/oglx.c, play/win/oglw.c   added p_glresize function

1/Oct/03
----------------------- 1.5.14 released -------------------------------

23/Sep/03

i/make.i   switched to Make.cfg-based extensions, Maketmpl deprecated

14/May/03

yorick/binpdb.c   fixed buffer overrun
opengl/           moved to play/
configure, play/x11/xconfig.sh   overhauled configure scripts

01/May/03

gist/xbasic.c   fixed serious buffer overrun involving G_N_PENDING
  this caused yorick to go insane after a graphics window was
  destroyed, occasionally manifested by SIGSEGV at quit

yorick/{codger.c,Makefile,Maketmpl.in} added explicit -i0= flag for codger

19/Mar/03

i/fermii.i  added incomplete Fermi-Dirac integrals

21/Feb/03

yorick/codger.c  fixed to cope with DOS files under UNIX

14/Feb/03

i/fits.i  complete rewrite by Eric Thiebaut, may break some old code
i/pnm.i   fixed bugs where PPM written as PBM

30/Dec/02

matrix/dgels.c  fixed bugs that caused SVsolve, QRsolve to fail sometimes

19/Dec/02

i0/std.i    added mergef improved merge API
i/bessel.i  fixed bugs (x<<1 no longer crashes, bessy0 now correct)

16/Dec/02

i0/std.i  fixed sech, csch, atanh, asinh, acosh
  to give correct answers for arguments and function values near zero
  also added expm1, log1p functions (removed expm1 from hex/hex.[ic])

18/Nov/02

play/i/{fermi.i,gammp.i,gamma.i,README}
    added fermi-dirac integrals, incomplete gamma and beta functions
yorick/pathfun.c
    fixed $(ENVVAR) in pathnames (thanks to Eric Thiebaut)

31/oct/02 ============= released 1.5.12

5/Sep/02

play/unix/{playu.h,fpuset.c,handler.c,umain.c,fputest.c}
    fix SIGFPE for MacOS X 10.2
matrix/{dgels.c,dgecon.c}  fixed enum goofs in cblas conversion

28/Aug/02

play/x11/rgbread.c  fixed yorick rgb_read(), bug in rgb_find_shift()
hex/hydra.i  fixed distributed file problems

19/Aug/02

opengl/x11/oglx.c   fixed colormap problem when GLX visual != default

5/Aug/02

yorick/binio.h  turned on PAD_ARRAY for i86's (big speedup)
win/yorick.d??  added gist browser, fixed cblasy in MSVC project files

12/Jul/02

g/ps[com].ps  fixed LS postscript function (plg with smooth=1)

8/Jul/02

yorick/task.c  make yorick return non-0 exit code on batch or fatal errors
g/{pscom.ps,ps.ps}  workaround for adobe illustrator 10 bugs

2/Jul/02 ============= released 1.5.10

25/Jun/02

gist/engine.c   zoomed pli images with x1<x0 or y1<y0 in hcp output fixed
gist/browser.c  added -geometry option
hex/{hydra.i,ylmdec.i}  upgraded hydra support to handle history families

03/Jun/02

yorick/task.c   batch quit now closes open binary files
matrix/*        change to new C blas standard linkage (e.g.- atlas)

20/May/02

play/unix/fpuset.c   log(-2) no longer crashes MacOS X

10/May/02

emacs/yorick.el  converted to easymenu, other fixes for xemacs (21.1)

2/May/02

gist/ps.c            fixed gist -f filter mode
play/unix/stdinit.c  fixed problem when stdin redirected to /dev/null

26/Apr/02

yorick/yhash.c  huge hash tables now work
  (necessary for writing huge numbers of pointers using save function)

24/Apr/02

  removed all tabs from source files
yorick/yinput.c
  #include finds files in ./ before Y_SITE/i/ as in 1.4
play/x11/{connect.c,colors.c,playx.h}
     win/pscr.c
     yorick/graph.c
  define four gray colors, "graya" (lightest) to "grayd" (darkest)

10/Apr/02

yorick/{task.c,parse.c}
  rework y_on_stdin to simply queue incoming lines, so all
  parsing done during y_on_idle -- fixes problems with mousing
  in multiple lines and other #include/include peculiarities
play/unix/{fpu*,config.sh}
  add FPU_GNU_FENV (feenableexcept), fix fputest.c to match yorick

28/Mar/02

play/unix/upoll.c
  fix p_realloc to have correct sizeof() multiplying 2nd parameter
yorick/{task.c,yorick.c}
  fix prompting so read function does not prompt on mouse motion
gist/xbasic.c
  add hooks for event handler functions (for OpenGL, GUI extensions)
opengl/
  fix configuration script, makefiles, and mesa hook
g/{ps.ps,pscom.ps}
  remove EPSF comment line (confuses FrameMaker)

20/Feb/02

yorick/{ops0.c,ops1.c,ops2.c,std0.c}
  make sure yorick's char type is unsigned char

12/Feb/02

-- serious goof in 1.5.08 makes it impossible to create CGM files:
gist/cgm.c  fix CGM file creation - repairs feature enhancement below
emacs/yorick.el  make yutil-query-replace work with emacs 21

1/Feb/02

--try to recover from 1.5.07 disastrous release:
yorick/std0.c  fix omitted trailing / in Y_HOME
yorick/yorick.c  fix bad behavior for continued quotes, comments
emacs/yorick.el  fix sending long input
yorick/binio.c,binpdb.c  fix things that break recover_file
gist/gread.c   handle MS Windows c: drive spec in paths
gist/cgm.c     write explicit VDC TYPE element in CGM files
ysite.sh       needed more quotes

15/Jan/02

play/unix/slinks.c  Y_LAUNCH bug (failure to find .i files on start)
yorick/task.c
  fixed long-standing bug causing bogus "VM idle or lost" messages
play/win/ and yorick/
  fixes to make Windows version work properly
hex/{hydram.c,hydra.i,ylmdec.i}
  bug fix, fixed scripts to handle large file families faster

24/dec/01

win/ and play/win
  many fixes, now builds and runs under Windows
gist/xfancy.c, yorick/std0.c
  when keybd_focus,1 (or under Windows) can now type commands in
  graphics window (very crude text editor, like unix termio)
also several changes to make FPU_MACOSX work, now builds and runs
  correctly under MacOS X, including SIGFPE handling

21/nov/01

yorick/task.c fix YError mishandling when in Y_SUSPENDED state
yorick/ascio.c fix retry_sscanf for when sscanf returns -1 (EOF)
  this does not fix bug in glibc sscanf that returns -1 instead of 0
  when matching failure for double encounters i, n, I, or N character

14/nov/01

yorick/ascio.c fix more serious problems with keyboard read

yorick/{binio.h, binio.c, binpdb.c, clog.c, std2.c}
play/any/numfmt.c
fix problem with struct alignment/size on PowerPC architectures
(including MacOS X, IBM SP/2)

play/unix/{fpuset.c,config.sh}
add SIGFPE handling for MacOS X

23/oct/01 version 1.5.05

gist/browser.c and gist/cgmin.c fix SEGV on q, failure to open ncgm

22/oct/01 version 1.5.04

minor fix to close debian bug

18/oct/01 version 1.5.03

numerous bug fixes after disastrous limited release in x-division:
(1) PDB files close on quit
(2) handle include and rdline files with no final newline
(3) deliver prompt, avoid infinite loop on read from #include
(4) actually loads hex and drat packages
(5) handle X expose events properly
open issues: ibm sp/2 compiler bug on -O mminit.c (compile -g)
  need compaq cc>=6.4-213 to compile stdio.h with _POSIX_SOURCE
    (workaround by -D_XOPEN_SOURCE)
  some sgi machines deliver SIGTRAP on integer divide by zero

31/jul/01 version 1.5.03

yorick/task.c  -- YError fixed to handle SIGINT properly
yorick/std2.c, i/basfix.i  -- edit_times fixed to allow times, ncycs
  to be added when variable names are changed
gist/xbasic.c  -- ChangeMap fixed to do landscape properly
gist/xbasic.h  -- fix DefaultTop macros to work for other than 100 dpi
gist/xfancy.c  -- fix SEGV on click-to-zoom for overlapping systems
play/unix/handler.c  -- fix so multiple SIGINTs with 1 sec work

------------------------------------------------------------------------

version 1.5.02

Mostly for Build-Depends fix to debian package.  Minor fixes to
yorick/Makefile, configure scripts to try to handle alpha Linux SIGFPE
problems.

------------------------------------------------------------------------

02/may/01 version 1.5.01

First release of yorick-1.5.  The directory structure and
configuration scripts have completely changed; see the top-level
README for more.  The 1.5 version of yorick has the directory
structure, configuration scripts, and portability layer for
yorick-2.0, but still has the 1.4 interpreter.  The MacOS portion of
the portability layer is not yet present, but the Windows portion is
complete or nearly complete.

There are a few new features:

1. RGB colors supported for color= keyword, pli, plf, plfp
   see help,color or help,pli for more information

2. lsdir, mkdir, rmdir functions added so yorick can read and
   manipulate directories by itself

3. i86_primitives and other modern binary formats added
   see help,createb and help,__i86 for more information

4. cheby.i, convol.i, dawson.i, kepler.i added to interpreted
   library

5. added "hex" 3D transport solver (similar to drat 2D solver)

6. improved the emacs/yorick.el package again, mostly by removing
   unwanted "improvements" to emacs; see emacs/README

The yorick homepage and Web-based documentation has also been
completely reworked.  Visit

   ftp://ftp-icf.llnl.gov/pub/Yorick/

or the new homepage

   ftp://ftp-icf.llnl.gov/pub/Yorick/doc/index.html

You can download all this Web-based documentation (and the yorick and
texi2html scripts used to create it) from the downloads page there.
It is based on the work of Robert Cannon, who deserves most of the
credit but none of the blame for the new look.  Perhaps his best idea
is the HTML-ized source code for the entire interpreted library, which
makes it much easier to study the interpreted source code that comes
with the yorick distribution.  Ferdinand Jamitzky also helped by
making a first cut at converting the Quick Reference Cards to HTML; it
now works pretty much as well as the PDF or printed versions.