master 3cf7d32b90a: Display glyphs whose first contours commence at origin

[Po Lu]

branch: master
commit 3cf7d32b90ad32321c141bb2a34a670d2d6df5b7
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Display glyphs whose first contours commence at origin
    
    * src/sfnt.c (sfnt_build_append): Don't disregard redundant
    motion if outline is empty.  Problem encountered in the "M"
    glyph within Source Code Pro VF Italic.
---
 src/sfnt.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/sfnt.c b/src/sfnt.c
index 8ec19290859..34239973797 100644
--- a/src/sfnt.c
+++ b/src/sfnt.c
@@ -3487,12 +3487,18 @@ sfnt_build_append (int flags, sfnt_fixed x, sfnt_fixed 
y)
 {
   struct sfnt_glyph_outline *outline;
 
+  outline = build_outline_context.outline;
+
   if (x == build_outline_context.x
-      && y == build_outline_context.y)
+      && y == build_outline_context.y
+      /* If the outline is presently empty, the first move_to must be
+        recorded even if its X and Y are set to origin.  Without this
+        initial vertex, edges will be generated from the next vertex
+        onward, and thus be misaligned.  */
+      && outline->outline_used)
     /* Ignore redundant motion.  */
     return build_outline_context.outline;
 
-  outline = build_outline_context.outline;
   outline->outline_used++;
 
   /* See if the outline has to be extended.  Checking for overflow