The FreeType Project Files

CHANGES BETWEEN 2.5.3 and 2.5.4

  I. IMPORTANT BUG FIXES

    - A   variant  of   vulnerability  CVE-2014-2240   was  identified
      (cf.  http://savannah.nongnu.org/bugs/?43661) and  fixed in  the
      new CFF driver.  All users should upgrade.

    - The new auto-hinter code using HarfBuzz crashed for some invalid
      fonts.

    - Many fixes to better protect against malformed input.


  II. IMPORTANT CHANGES

    - Full auto-hinter support of the Devanagari script.

    - Experimental auto-hinter support of the Telugu script.

    - CFF stem darkening behaviour can now be controlled at build time
      using the eight macros

        CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4}    .

    - Some fields in the `FT_Bitmap'  structure have been changed from
      signed to unsigned type, which better reflects the actual usage.
      It  is also  an additional  means to  protect against  malformed
      input.

      This  change doesn't  break  the ABI;  however,  it might  cause
      compiler warnings.


  III. MISCELLANEOUS

    - Improvements to  the auto-hinter's algorithm to  recognize stems
      and local extrema.

    - Function `FT_Get_SubGlyph_Info' always returned an error even in
      case of success.

    - Version  2.5.1 introduced  major bugs  in  the cjk  part of  the
      auto-hinter, which are now fixed.

    - The  `FT_Sfnt_Tag'  enumeration  values  have  been  changed  to
      uppercase,  e.g.  `FT_SFNT_HEAD'.   The lowercase  variants  are
      deprecated.    This  is   for  orthogonality   with  all   other
      enumeration (and enumeration-like) values in FreeType.

    - `cmake' now supports builds of FreeType as an OS X framework and
      for iOS.

    - Improved project files for vc2010, introducing a property file.

    - The  documentation generator  for  the API  reference  has  been
      updated to produce  better HTML code (with proper  CSS).  At the
      same time, the documentation got a better structure.

    - The FT_LOAD_BITMAP_CROP flag is obsolete;  it is not used by any
      driver.

    - The  TrueType  DELTAP[123]  bytecode instructions  now  work  in
      subpixel hinting  mode as described in  the ClearType whitepaper
      (i.e., for touched points in the non-subpixel direction).

    - Many small improvements to the internal arithmetic routines.