[gnome-characters] libgc: Add accented Latin characters to related

[Daiki Ueno <dueno src gnome org>]

commit 7df1585fa6d8c359d9d64a4f7aec7890c319ea43
Author: Daiki Ueno <dueno src gnome org>
Date:   Tue Feb 24 12:40:33 2015 +0900

    libgc: Add accented Latin characters to related

 lib/gc.c |   38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)
---
diff --git a/lib/gc.c b/lib/gc.c
index efc8733..7ee2148 100644
--- a/lib/gc.c
+++ b/lib/gc.c
@@ -7,6 +7,7 @@
 #include <unicase.h>
 #include <unictype.h>
 #include <uniname.h>
+#include <uninorm.h>
 #include <unistr.h>
 #include "confusables.h"
 
@@ -645,6 +646,43 @@ gc_search_related_thread (GTask        *task,
       g_array_append_val (result, uc);
     }
 
+  if (uc_is_general_category (data->uc, UC_CATEGORY_L))
+    {
+      const uc_script_t *script;
+      ucs4_t decomposition[UC_DECOMPOSITION_MAX_LENGTH];
+      int length;
+
+      script = uc_script (data->uc);
+      if (script && strcmp (script->name, "Latin") == 0)
+       {
+         ucs4_t block_starters[4] = { 0x0000, 0x0080, 0x0100, 0x0180 };
+         ucs4_t base;
+         int i;
+
+         length = uc_canonical_decomposition (data->uc, decomposition);
+         if (length > 0)
+           {
+             base = decomposition[0];
+             g_array_append_val (result, base);
+           }
+         else
+           base = data->uc;
+
+         for (i = 0; i < G_N_ELEMENTS (block_starters); i++)
+           {
+             const uc_block_t *block;
+
+             block = uc_block (block_starters[i]);
+             for (uc = block->start; uc < block->end; uc++)
+               {
+                 length = uc_canonical_decomposition (uc, decomposition);
+                 if (length > 0 && decomposition[0] == base)
+                   g_array_append_val (result, uc);
+               }
+           }
+       }
+    }
+
   gc_add_confusables (data, result, cancellable);
   g_array_sort (result, compare_unichar);
   remove_duplicates (result);