[buffer] Inline some more

src/hb-buffer.hh

diff --git a/src/hb-buffer.hh b/src/hb-buffer.hh
index bcaf066..33ddcbc 100644
--- a/src/hb-buffer.hh
+++ b/src/hb-buffer.hh
@@ -212,13 +212,46 @@
 				   unsigned int num_out,
 				   const hb_codepoint_t *glyph_data);
 
-  HB_INTERNAL void replace_glyph (hb_codepoint_t glyph_index);
+  inline void replace_glyph (hb_codepoint_t glyph_index)
+  {
+    if (unlikely (out_info != info || out_len != idx)) {
+      if (unlikely (!make_room_for (1, 1))) return;
+      out_info[out_len] = info[idx];
+    }
+    out_info[out_len].codepoint = glyph_index;
+
+    idx++;
+    out_len++;
+  }
   /* Makes a copy of the glyph at idx to output and replace glyph_index */
-  HB_INTERNAL void output_glyph (hb_codepoint_t glyph_index);
-  HB_INTERNAL void output_info (const hb_glyph_info_t &glyph_info);
+  inline hb_glyph_info_t & output_glyph (hb_codepoint_t glyph_index)
+  {
+    if (unlikely (!make_room_for (0, 1))) return Crap(hb_glyph_info_t);
+
+    out_info[out_len] = info[idx];
+    out_info[out_len].codepoint = glyph_index;
+
+    out_len++;
+
+    return out_info[out_len - 1];
+  }
+  inline void output_info (const hb_glyph_info_t &glyph_info)
+  {
+    if (unlikely (!make_room_for (0, 1))) return;
+
+    out_info[out_len] = glyph_info;
+
+    out_len++;
+  }
   /* Copies glyph at idx to output but doesn't advance idx */
-  HB_INTERNAL void copy_glyph (void);
-  HB_INTERNAL bool move_to (unsigned int i); /* i is output-buffer index. */
+  inline void copy_glyph (void)
+  {
+    if (unlikely (!make_room_for (0, 1))) return;
+
+    out_info[out_len] = info[idx];
+
+    out_len++;
+  }
   /* Copies glyph at idx to output and advance idx.
    * If there's no output, just advance idx. */
   inline void
@@ -235,10 +268,11 @@
 
     idx++;
   }
-
   /* Advance idx without copying to output. */
-  inline void skip_glyph (void) { idx++; }
-
+  inline void skip_glyph (void)
+  {
+    idx++;
+  }
   inline void reset_masks (hb_mask_t mask)
   {
     for (unsigned int j = 0; j < len; j++)
@@ -275,6 +309,8 @@
 
 
   /* Internal methods */
+  HB_INTERNAL bool move_to (unsigned int i); /* i is output-buffer index. */
+
   HB_INTERNAL bool enlarge (unsigned int size);
 
   inline bool ensure (unsigned int size)