From mboxrd@z Thu Jan  1 00:00:00 1970
From: arisawa <arisawa@ar.aichi-u.ac.jp>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Message-Id: <76A0A13C-0D91-4620-A282-A581C206A9FA@ar.aichi-u.ac.jp>
Date: Sun, 30 Mar 2014 08:31:14 +0900
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\))
Subject: [9fans] a strange bug in grep
Topicbox-Message-UUID: d29e3ece-ead8-11e9-9d60-3106f5b1d025

Hello,

I found a strange bug in grep.
some Japanese runes does not match =E2=80=98[^0-9]=E2=80=99.

for example =E2=80=98=E3=81=BE' (307e) and =E2=80=98=E3=81=BF=E2=80=99(307=
f).

unicode table from 3040 to 3090 is=20
3040 =E3=81=80	3041 =E3=81=81	3042 =E3=81=82	3043 =E3=81=83	3044 =E3=81=
=84	3045 =E3=81=85	3046 =E3=81=86	3047 =E3=81=87
3048 =E3=81=88	3049 =E3=81=89	304a =E3=81=8A	304b =E3=81=8B	304c =E3=81=
=8C	304d =E3=81=8D	304e =E3=81=8E	304f =E3=81=8F
3050 =E3=81=90	3051 =E3=81=91	3052 =E3=81=92	3053 =E3=81=93	3054 =E3=81=
=94	3055 =E3=81=95	3056 =E3=81=96	3057 =E3=81=97
3058 =E3=81=98	3059 =E3=81=99	305a =E3=81=9A	305b =E3=81=9B	305c =E3=81=
=9C	305d =E3=81=9D	305e =E3=81=9E	305f =E3=81=9F
3060 =E3=81=A0	3061 =E3=81=A1	3062 =E3=81=A2	3063 =E3=81=A3	3064 =E3=81=
=A4	3065 =E3=81=A5	3066 =E3=81=A6	3067 =E3=81=A7
3068 =E3=81=A8	3069 =E3=81=A9	306a =E3=81=AA	306b =E3=81=AB	306c =E3=81=
=AC	306d =E3=81=AD	306e =E3=81=AE	306f =E3=81=AF
3070 =E3=81=B0	3071 =E3=81=B1	3072 =E3=81=B2	3073 =E3=81=B3	3074 =E3=81=
=B4	3075 =E3=81=B5	3076 =E3=81=B6	3077 =E3=81=B7
3078 =E3=81=B8	3079 =E3=81=B9	307a =E3=81=BA	307b =E3=81=BB	307c =E3=81=
=BC	307d =E3=81=BD	307e =E3=81=BE	307f =E3=81=BF
3080 =E3=82=80	3081 =E3=82=81	3082 =E3=82=82	3083 =E3=82=83	3084 =E3=82=
=84	3085 =E3=82=85	3086 =E3=82=86	3087 =E3=82=87
3088 =E3=82=88	3089 =E3=82=89	308a =E3=82=8A	308b =E3=82=8B	308c =E3=82=
=8C	308d =E3=82=8D	308e =E3=82=8E	308f =E3=82=8F
3090 =E3=82=90

I tried some of them.
term% cat t3
=E3=81=82
=E3=81=AF
=E3=81=B0
=E3=81=B1
=E3=81=B2
=E3=81=B3
=E3=81=B4
=E3=81=B5
=E3=81=B6
=E3=81=B7
=E3=81=B8
=E3=81=B9
=E3=81=BA
=E3=81=BB
=E3=81=BC
=E3=81=BD
=E3=81=BE
=E3=81=BF
=E3=82=80
=E3=82=81
=E3=82=82
term% grep -v '[^0-9]' t3
=E3=81=BE
=E3=81=BF
term%=20

Kenji Arisawa