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CHANGES: Document recent metrics change from Nikolaus.

git/fs: mount .git/fs: mount/attach disallowed

--- a/docs/CHANGES

+++ b/docs/CHANGES

@@ -18,6 +18,22 @@

   III. MISCELLANEOUS

+    - The  logic for  computing  the global  ascender, descender,  and

+      height  of  OpenType  fonts   has  been  slightly  adjusted  for

+      consistency.

+

+      . If the `useTypoMetrics' flag (i.e., bit 7 in the `fsSelection'

+        field) in the  `OS/2' table is set, use the  `sTypo' fields in

+        `OS/2' unconditionally.

+      . Otherwise use  the metrics data from the `hhea'  table (if not

+        zero).

+      . Otherwise use the `sTypo' fields (if not zero).

+      . Otherwise use the `usWin' data from the `OS/2' table as a last

+        resort.

+

+      Variable fonts will apply the `MVAR' deltas to whichever metrics

+      were picked.

+

     - `TT_Set_MM_Blend' could  fail if  call repeatedly with  the same

       arguments.

--- a/src/truetype/ttgxvar.c

+++ b/src/truetype/ttgxvar.c

@@ -1405,6 +1405,8 @@

        */

       FT_Short  current_line_gap = root->height - root->ascender +

                                    root->descender;

+

+

       root->ascender  = root->ascender + mvar_hasc_delta;

       root->descender = root->descender + mvar_hdsc_delta;

       root->height    = root->ascender - root->descender +