From 4ae015fc640305e903859fac5bd7249f9e700371 Mon Sep 17 00:00:00 2001
From: handa <handa>
Date: Thu, 3 Dec 2009 08:08:56 +0000
Subject: [PATCH] (decode_packed_otf_tag): Re-calculate category code only if
 some feature is applied.

---
 src/m17n-flt.c |   25 ++++++-------------------
 1 file changed, 6 insertions(+), 19 deletions(-)

diff --git a/src/m17n-flt.c b/src/m17n-flt.c
index 0e54af1..891b69f 100644
--- a/src/m17n-flt.c
+++ b/src/m17n-flt.c
@@ -1861,7 +1861,8 @@ decode_packed_otf_tag (FontLayoutContext *ctx, MFLTGlyphString *gstring,
 	{
 	  int i;
 
-	  g->internal &= 0x30000000;
+	  /* Clear the feature tag code.  */
+	  g->internal &= ~0xFFFFFFF;
 	  for (i = 0, enc = '\0'; i < category->feature_table.size; i++)
 	    if (category->feature_table.tag[i] == tag)
 	      {
@@ -1870,12 +1871,11 @@ decode_packed_otf_tag (FontLayoutContext *ctx, MFLTGlyphString *gstring,
 		  ctx->encoded[from - ctx->encoded_offset] = enc;
 		break;
 	      }
+	  if (! enc)
+	    enc = (g->c > 0 ? (int) mchartable_lookup (category->table, g->c)
+		   : 1);
+	  SET_CATEGORY_CODE (g, enc);
 	}
-      else
-	enc = '\0';
-      if (! enc)
-	enc = g->c > 0 ? (int) mchartable_lookup (category->table, g->c) : 1;
-      SET_CATEGORY_CODE (g, enc);
     }
 }
 
@@ -2138,19 +2138,6 @@ run_command (int depth, int id, int from, int to, FontLayoutContext *ctx)
 	g = GREF (ctx->out, ctx->out->used - 1);
 	if (ctx->combining_code)
 	  SET_COMBINING_CODE (g, ctx, ctx->combining_code);
-#if 0
-	else if (! GET_COMBINED (g) && ctx->category)
-	  {
-	    MCharTable *table = ctx->category->table;
-	    char enc = (GET_ENCODED (g)
-			? (g->c > 0 ? (int) mchartable_lookup (table, g->c)
-			   : 1)
-			: g->code
-			? (int) mchartable_lookup (table, g->code)
-			: ' ');
-	    SET_CATEGORY_CODE (g, enc);
-	  }
-#endif
 	if (ctx->left_padding)
 	  SET_LEFT_PADDING (g, ctx, LeftPaddingMask);
 	if (ctx->cluster_begin_idx >= 0)
-- 
1.7.10.4