Martin Muskens bufixes:

- reallocation bug in T1_Table_Add
  - increased accuracy of units per EM computation in T1 fonts
  - support "+" as valid font name character (used in embedded fonts)

ChangeLog

@@ -1,3 +1,15 @@
+2001-08-30  Martin Muskens <mmuskens@aurelon.com>
+
+	* src/type1/t1load.c (parse_font_matrix): a new way to compute the
+	units per EM with greater accuracy (important for embedded T1 fonts in
+	PDF documents that were automatically generated from TrueType ones).
+
+	* src/type1/t1load.c (is_alpha): now supports "+" in font names, this
+	is used in embedded fonts..
+
+	* src/psaux/psobjs.c (PS_Table_Add): fixed a reallocation bug that
+	generated a dangling pointer reference.
+
 2001-08-30  Anthony Feik  <afeick@hotmail.com>
 
 	* src/type1/t1afm.c (T1_Read_Afm): now correctly sets the flag

src/psaux/psobjs.c

@@ -164,8 +164,12 @@
     if ( table->cursor + length > table->capacity )
     {
       FT_Error   error;
-      FT_Offset  new_size = table->capacity;
-
+      FT_Offset  new_size  = table->capacity;
+      FT_Long    in_offset;
+      
+      in_offset = (FT_Long)((FT_Byte*)object - table->block);
+      if ( (FT_ULong)in_offset >= table->capacity )
+        in_offset = -1;
 
       while ( new_size < table->cursor + length )
         new_size += 1024;
@@ -173,6 +177,9 @@
       error = reallocate_t1_table( table, new_size );
       if ( error )
         return error;
+      
+      if ( in_offset >= 0 )
+        object = table->block + in_offset;
     }
 
     /* add the object to the base block and adjust offset */

src/type1/t1load.c

@@ -766,7 +766,10 @@
   static int
   is_alpha( FT_Byte  c )
   {
-    return ( isalnum( c ) || c == '.' || c == '_' || c == '-' );
+    /* Note: we must accept "+" as a valid character, as it is used in */
+    /*       embedded type1 fonts in PDF documents..                   */
+    /*                                                                 */
+    return ( isalnum( c ) || c == '.' || c == '_' || c == '-' || c == '+' );
   }
 
 
@@ -895,8 +898,9 @@
     /* 1000 / temp_scale, because temp_scale was already multiplied by  */
     /* 1000 (in t1_tofixed, from psobjs.c).                             */
 
-    root->units_per_EM = (FT_UShort)FT_DivFix( 0x10000L,
-                                               FT_DivFix( temp_scale, 1000 ) );
+    root->units_per_EM = (FT_UShort)(FT_DivFix( 1000*0x10000L,
+                                                temp_scale ) >> 16);
+
 
     /* we need to scale the values by 1.0/temp_scale */
     if ( temp_scale != 0x10000L )