PostgreSQLのpg_trgmでマルチバイト文字を使えるようにするためのHomebrewパッチ。

trgm.patch

--- a/contrib/pg_trgm/trgm.h  2013-05-14 11:20:48.000000000 +0900
+++ b/contrib/pg_trgm/trgm.h  2013-05-14 11:20:42.000000000 +0900
@@ -12,7 +12,7 @@
 /* options */
 #define LPADDING   2
 #define RPADDING   1
-#define KEEPONLYALNUM
+/* #define KEEPONLYALNUM */
 /*
  * Caution: IGNORECASE macro means that trigrams are case-insensitive.
  * If this macro is disabled, the ~~* operator must be removed from the

インストールの前に

$ brew edit postgresql

で、以下のように書き換える。

  def patches
-    DATA
+    {
+      :p1 => DATA,
+      :p0 => 'https://gist.github.com/oukayuka/5573239/download'
+    }
  end