bug#62144: closed (Unexpected output)

[GNU bug Tracking System]

Your message dated Tue, 14 Mar 2023 09:24:28 -0700
with message-id 
<CA+8g5KEPG_rnXk-Y8sTYG5cDN3Kq-M8SQVNro5h_1Qxz6ux73A@mail.gmail.com>
and subject line Re: bug#62144: Unexpected output
has caused the debbugs.gnu.org bug report #62144,
regarding Unexpected output
to be marked as done.

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-- 
62144: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=62144
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> --- Begin Message ---
>
>
>
> Subject: 
>
> Unexpected output
>
>
>
>
> Date: 
>
> Sun, 12 Mar 2023 09:05:37 +0100
>
>
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> User-agent: 
>
> Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0
>
>
>
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>
>   
>   
>     Hello, 
>         I have found an unexpected behavior of sed. I would expect the
>         same output for the following commands:
>         
>         sed '/root/!d' /etc/passwd
>         sed '/root/{ !d }' /etc/passwd
>         
>         $ sed --version
>         sed (GNU sed) 4.7
>         Packaged by Debian
>         Copyright (C) 2018 Free Software Foundation, Inc.
>         License GPLv3+: GNU GPL version 3 or later
>         <https://gnu.org/licenses/gpl.html>.
>         This is free software: you are free to change and redistribute
>         it.
>         There is NO WARRANTY, to the extent permitted by law.
>         
>         Written by Jay Fenlason, Tom Lord, Ken Pizzini,
>         Paolo Bonzini, Jim Meyering, and Assaf Gordon.
>         GNU sed home page: <https://www.gnu.org/software/sed/>.
>         General help using GNU software:
>         <https://www.gnu.org/gethelp/>.
>         Fehlerberichte bitte per E-Mail (auf englisch) an:
>         <bug-sed@gnu.org>.
>         
>         
>         
>         Seen ouotput:
>         
>         $ sed '/root/!d' /etc/passwd
>         root:x:0:0:root:/root:/bin/bash
>         
>         $ sed '/root/{ !d }' /etc/passwd
>         root:x:0:0:root:/root:/bin/bash
>         daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
>         bin:x:2:2:bin:/bin:/usr/sbin/nologin
>         sys:x:3:3:sys:/dev:/usr/sbin/nologin
>         sync:x:4:65534:sync:/bin:/bin/sync
>         ... the whole file
>         
>         BR,
>         Stefan Scheruebl
>       
>   
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#62144: Unexpected output
>
>
>
>
> Date: 
>
> Tue, 14 Mar 2023 09:24:28 -0700
>
>
>
>
> tags 62144 notabug
> stop
>
> On Sun, Mar 12, 2023 at 7:24 AM walonen <walonen@gmx.net> wrote:
> > I have found an unexpected behavior of sed. I would expect the same
> > output for the following commands:
> >
> > sed '/root/!d' /etc/passwd
> > sed '/root/{ !d }' /etc/passwd
>
> Thanks for the report, but the '!' modifier must be applied to an
> address specification, so your latter command should be spelled like
> this:
>
> sed '/root/!{ d }' /etc/passwd
>
> and that is equivalent to the first one.
>
> Quoting the info documentation on this topic:
>
>    Appending the '!' character to the end of an address specification
> (before the command letter) negates the sense of the match.  That is, if
> the '!' character follows an address or an address range, then only
> lines which do _not_ match the addresses will be selected.  The
> following command replaces the word 'hello' with 'world' only in lines
> _not_ containing the word 'apple':
>
>      sed '/apple/!s/hello/world/' input.txt > output.txt
>
>    The following command replaces the word 'hello' with 'world' only in
> lines 1 to 3 and 18 till the last line of the input file (i.e.
> excluding lines 4 to 17):
>
>      sed '4,17!s/hello/world/' input.txt > output.txt
>
>
> --- End Message ---