diff -ur mecab-ipadic-2.7.0-20070801.orig/char.def mecab-ipadic-2.7.0-20070801/char.def
--- mecab-ipadic-2.7.0-20070801.orig/char.def	2007-07-31 23:54:53.000000000 +0900
+++ mecab-ipadic-2.7.0-20070801/char.def	2007-12-31 10:14:36.000000000 +0900
@@ -40,13 +40,7 @@
 0x000A SPACE
 
 # ASCII
-0x0021..0x002F SYMBOL
-0x0030..0x0039 NUMERIC
-0x003A..0x0040 SYMBOL
-0x0041..0x005A ALPHA
-0x005B..0x0060 SYMBOL
-0x0061..0x007A ALPHA
-0x007B..0x007E SYMBOL
+0x0021..0x007E ALPHA
 
 # Latin
 0x00A1..0x00BF SYMBOL # Latin 1