GNU logs - #37607, boring messages

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Subject: bug#37607: How to use Grep with Using -o
Resent-From: Matt Zand <mahdiumd@HIDDEN>
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From: Matt Zand <mahdiumd@HIDDEN>
Date: Thu, 3 Oct 2019 11:54:24 -0400
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Hi,

Is it possible to output symbols which constitute non-matched parts of
text? For instance, I expect

printf "banana\napple" | grep --invert-match --only-matching 'ban'

to produce

ana
apple

or

apple

, but it doesn't produce anything.

I need -o because I grep multiline pattern with -z.




-- 
Cheers,

Matt Zand
Cell: 202-420-9192
Work: 240-200-6131
High School Technology Services <https://myhsts.org/>
DC Web Makers <https://dcwebmakers.com/>
Coding Bootcamps <https://coding-bootcamps.com/>

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<div dir=3D"ltr">

<pre class=3D"gmail-message" style=3D"font-family:monospace;padding-top:0px=
;margin-top:0px;border-top:0px none;white-space:pre-wrap;color:rgb(0,0,0);f=
ont-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;fon=
t-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-tr=
ansform:none;word-spacing:0px;background-color:rgb(254,254,254);text-decora=
tion-style:initial;text-decoration-color:initial"><span style=3D"font-famil=
y:arial,sans-serif">Hi,

Is it possible to output symbols which constitute non-matched parts of text=
? For instance, I expect

printf &quot;banana\napple&quot; | grep --invert-match --only-matching &#39=
;ban&#39;

to produce

ana
apple

or

apple

, but it doesn&#39;t produce anything.

I need -o because I grep multiline pattern with -z.</span>
</pre><br class=3D"gmail-Apple-interchange-newline">

<br clear=3D"all"><br>-- <br><div dir=3D"ltr" class=3D"gmail_signature" dat=
a-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><div=
><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div>Che=
ers,<br><br>Matt Zand<br></div><div>Cell: 202-420-9192<br>Work: 240-200-613=
1</div><div><a href=3D"https://myhsts.org/" target=3D"_blank">High School T=
echnology Services</a></div><div><a href=3D"https://dcwebmakers.com/" targe=
t=3D"_blank">DC Web Makers</a></div><div><a href=3D"https://coding-bootcamp=
s.com/" target=3D"_blank">Coding Bootcamps</a><br></div><div></div><br></di=
v></div></div></div></div></div></div></div></div></div></div></div>

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To: Matt Zand <mahdiumd@HIDDEN>
Subject: bug#37607: Acknowledgement (How to use Grep with Using -o)
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Date: Thu, 03 Oct 2019 16:09:01 +0000

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Message sent to bug-grep@HIDDEN:

Subject: bug#37607: How to use Grep with Using -o
Resent-From: Paul Eggert <eggert@HIDDEN>
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On 10/3/19 8:54 AM, Matt Zand wrote:

> Is it possible to output symbols which constitute non-matched parts of
> text? For instance, I expect
> 
> printf "banana\napple" | grep --invert-match --only-matching 'ban'
> 
> to produce
> 
> ana
> apple
> 
> or
> 
> apple
> 
> , but it doesn't produce anything.

Unfortunately the -v and -o options don't currently combine in that way. Perhaps
they should, or perhaps another option could be added to do what you want. I'll
mark this as a wishlist item.

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Subject: 37607 is wishlist
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severity 37607 wishlist

Last modified: Thu, 2 Jan 2020 10:15:02 UTC

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