Notes:
CHANGES BETWEEN 2.3.1 and 2.3.0

I. IMPORTANT BUG FIXES

- The TrueType interpreter sometimes returned incorrect horizontal
metrics due to a bug in the handling of the SHZ instruction.

- A typo in a security check introduced after version 2.2.1
prevented FreeType to render some glyphs in CFF fonts.


Changes:
2007-01-31 Werner Lemberg <wl@gnu.org>


* Version 2.3.1 released.
=========================


Tag sources with `VER-2-3-1-FINAL'.

* builds/win32/visualc/freetype.dsp,
builds/win32/visualc/freetype.vcproj: s/230/231/.
* builds/win32/visualc/index.html: s/221/231/.

* vms_make.com: Add `ftgasp'.

2007-01-30 David Turner <david@freetype.org>

Tag sources with VER-2-3-1 to prepare release.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.

* docs/VERSION.DLL docs/release, README, Jamfile (RefDoc):
s/2.3.0/2.3.1/.

* builds/unix/configure.raw (version_info): Set to 9:12:3.


* src/autofit/aftypes.h (AF_USE_WARPER), src/autofit/afloader.c
(af_loader_load_g): Disable the warper (i.e., the light hinting
improvements) to make a 2.3.1 bugfix release before introducing a
new feature. This should give us more time to tune and improve the
warper for the next release.

* docs/CHANGES: Update accordingly.

2007-01-25 David Turner <david@freetype.org>

For light auto-hinting, improve glyph advance widths and resurrect
normal/full hinting to its normal quality.

* src/autofit/afhints.h (AF_GlyphHintsRec): New members `xmin_delta'
and `xmax_delta'.
* src/autofit/afhints.c (af_glyph_hints_reload): Reset `xmin_delta'
and `xmax_delta'.

* src/autofit/afloader.c (af_loader_load_g) <AF_USE_WARPER>: Replace
preprocessor conditional with if-clause, handling both light and
normal mode.

* src/autofit/afwarp.c (AF_WarpScore): Fine-tune again.
(af_warper_compute): Handle `xmin_delta' and `xmax_delta'.

2007-01-25 Werner Lemberg <wl@gnu.org>

* docs/release: Updated -- Savannah uses a new uploading scheme.

2007-01-25 David Turner <david@freetype.org>

* src/cff/cffload.c (cff_index_get_pointers): Improve previous fix.

* src/cff/cffgload.c (cff_decoder_parse_charstrings)
<cff_op_callsubr, cff_op_callgsubr>: Fix sanity check for empty
functions.

* docs/CHANGES: Document light auto-hinting improvement.

2007-01-25 Werner Lemberg <wl@gnu.org>

* src/cff/cffload.c (cff_index_get_pointers): Handle last entry
correctly in a sanity check. Since this function is only used to
load local and global functions, any charstring that called the last
local/global function would fail otherwise. This fixes Savannah bug
#18867.

* docs/CHANGES: Document it.

2007-01-23 David Turner <david@freetype.org>

* src/truetype/ttobjs.c (tt_size_ready_bytecode): Fix typo that
prevented compilation when disabling both the unpatented and the
bytecode interpreter in the TrueType font driver.


Fix and enable the warper to improve `light' hinting mode. This is
not necessarily a final version, but it seems to work well.

* src/autofit/aflatin.c (af_latin_hints_init) [AF_USE_WARPER]:
Disable code.
(af_latin_hints_apply) [AF_USE_WARPER]: Handle FT_RENDER_MODE_LIGHT.
* src/autofit/aftypes.h: Activate AF_USE_WARPER.

* src/autofit/afwarp.c (AF_WarpScore): Tune table.
(af_warper_compute_line_best): Fix array size of `scores'.
(af_warper_compute): Better handling of border cases.
* src/autofit/afwarp.h (AF_WarperRec): Remove unused members `X1'
and `X2'.

2007-01-21 Werner Lemberg <wl@gnu.org>

* ChangeLog: Split off older entries into...
* ChangeLog.22: This new file.

2007-01-21 Werner Lemberg <wl@gnu.org>

* docs/CHANGES: Document SHZ fix.

2007-01-21 George Williams <gww@silcom.com>

* src/truetype/ttinterp.c (Ins_SHZ): SHZ doesn't move phantom
points.

2007-01-21 Werner Lemberg <wl@gnu.org>

* src/sfnt/ttmtx.c (tt_face_get_metrics)
[!FT_CONFIG_OPTION_OLD_INTERNALS]: Fix limit check.

I. IMPORTANT BUG FIXES

- A bunch of potential security problems have been found. All
users should update.

- Microsoft Unicode cmaps in TrueType fonts are now always
preferred over Apple cmaps. This is not a bug per se, but there
exist some buggy fonts created for MS which have broken Apple
cmaps. This affects only the automatic selection of FreeType;
it's always possible to manually select an Apple Unicode cmap if
desired.

- Many bug fixes to the TrueType bytecode interpreter.

- Improved Mac support.

- Subsetted CID-keyed CFFs are now supported correctly.

- CID-keyed CFFs with subfonts which are scaled in a non-standard
way are now handled correctly.

- A call to FT_Open_Face with `face_index' < 0 crashed FreeType if
the font was a Windows (bitmap) FNT/FON.


II. IMPORTANT CHANGES

- The new function `FT_Get_CID_Registry_Ordering_Supplement' gives
access to those fields in a CID-keyed font. The code has been
contributed by Derek Clegg.

- George Williams contributed code to validate the new `MATH'
OpenType table (within the `otvalid' module). The `ftvalid'
demo program has been extended accordingly.

- An API for cmap 14 support (for Unicode Variant Selectors, UVS)
has been contributed by George Williams.

- A new face flag FT_FACE_FLAG_CID_KEYED has been added, together
with a macro FT_IS_CID_KEYED which evaluates to 1 if the font is
CID-keyed.


III. MISCELLANEOUS

- Build support for symbian has been contributed.

- Better WGL4 glyph name support, contributed by Sergey Tolstov.

- Debugging output of the various FT_TRACEX macros is now sent to
stderr.

- The `ftview' demo program now provides artificial slanting too.

- The `ftvalid' demo program has a new option `-f' to select the
font index.