bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3

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From:	Paul Eggert
Subject:	bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3
Date:	Sat, 27 Jul 2019 10:16:00 -0700
User-agent:	Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

This is documented behavior; the grep manual says that when grep is reading abinary file it "may treat non-text bytes as line terminators".


You can use grep's -a (--text) option to if you want to match null bytes.

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bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3, Jeff Chua, 2019/07/26
- bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3, Paul Eggert <=
  - bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3, Jeff Chua, 2019/07/28
    - bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3, Paul Eggert, 2019/07/28
    - bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3, Jeff Chua, 2019/07/29