GNU bug report logs - #46802
grep (GNU grep) 3.6 RexEx range reversed.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: "Georgi K." <strammer <at> abv.bg>
Subject: bug#46802: closed (Re: bug#46802: grep (GNU grep) 3.6 RexEx range
 reversed.)
Date: Fri, 26 Feb 2021 20:21:02 +0000

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Your bug report

#46802: grep (GNU grep) 3.6 RexEx range reversed.

which was filed against the grep package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 46802 <at> debbugs.gnu.org.

-- 
46802: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=46802
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: "Georgi K." <strammer <at> abv.bg>
Cc: 46802-done <at> debbugs.gnu.org
Subject: Re: bug#46802: grep (GNU grep) 3.6 RexEx range reversed.
Date: Fri, 26 Feb 2021 12:20:41 -0800

On 2/26/21 9:29 AM, Georgi K. wrote:
>    My installation of grep thinks [a-Z] is a valid range, while [A-z] is not.

That's because 'a' collates before 'Z' in your locale, but 'A' does not 
collate before 'z'. If that's not what you want you can change your 
locale, e.g., by setting LC_ALL="C" in your environment.

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From: "Georgi K." <strammer <at> abv.bg>
To: bug-grep <at> gnu.org
Subject: grep (GNU grep) 3.6 RexEx range reversed.
Date: Fri, 26 Feb 2021 19:29:44 +0200 (EET)

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 Dear Grep team,  
  
  My installation of grep thinks [a-Z] is a valid range, while [A-z] is not.  
  OS:  ArcoLinux  
  Kernel Version:
5.11.1-zen1-1-zen  
  Grep Version:
  grep (GNU grep) 3.6  
  Shell Version:
GNU bash, version 5.1.4(1)-release (x86_64-pc-linux-gnu)
  
  Locale:
en_US.utf8  
  Steps to reproduce:  
  $ echo "test" | grep -E "[a-Z]"
test
  
 $ echo "test" | grep -E "[A-z]"
 grep: Invalid range end  
  Please, let me know if I can produce some debug log for you.  
  
  Best,  
  George
 

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