Add API/cmdline to show glyph extents when serializing buffer New API: HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS hb-shape now accepts --show-extents. Patch from Simon Cozens.

diff --git a/util/hb-shape.cc b/util/hb-shape.cc
index f38f387..3bd2184 100644
--- a/util/hb-shape.cc
+++ b/util/hb-shape.cc

@@ -70,6 +70,8 @@
       flags |= HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS;
     if (!format.show_positions)
       flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS;
+    if (format.show_extents)
+      flags |= HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS;
     format_flags = (hb_buffer_serialize_flags_t) flags;
   }
   void new_line (void)

diff --git a/util/options.cc b/util/options.cc
index 0821a17..0005f5c 100644
--- a/util/options.cc
+++ b/util/options.cc

@@ -706,6 +706,7 @@
 			      G_OPTION_ARG_NONE,	&this->show_positions,		"Do not output glyph positions",					NULL},
     {"no-clusters",	0, G_OPTION_FLAG_REVERSE,
 			      G_OPTION_ARG_NONE,	&this->show_clusters,		"Do not output cluster indices",					NULL},
+    {"show-extents",	0, 0, G_OPTION_ARG_NONE,	&this->show_extents,		"Output glyph extents",							NULL},
     {NULL}
   };
   parser->add_group (entries,

diff --git a/util/options.hh b/util/options.hh
index 6eb6c04..f1ec8cf 100644
--- a/util/options.hh
+++ b/util/options.hh

@@ -410,6 +410,7 @@
     show_text = false;
     show_unicode = false;
     show_line_num = false;
+    show_extents = false;
 
     add_options (parser);
   }
@@ -450,6 +451,7 @@
   hb_bool_t show_text;
   hb_bool_t show_unicode;
   hb_bool_t show_line_num;
+  hb_bool_t show_extents;
 };