GNU logs - #79991, boring messages

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Subject: bug#79991: 30.2; feature request:  change readability of hexl-mode or nhexl-mode
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A standard hex dump has 16

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Jeremy Bryant <jb@HIDDEN>
Subject: bug#79991: Acknowledgement (30.2; feature request:  change
 readability of hexl-mode or nhexl-mode)
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Subject: bug#79991: 30.2; feature request:  change readability of hexl-mode or nhexl-mode
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> Date: Thu, 11 Dec 2025 22:50:26 +0000
> From:  Jeremy Bryant via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN>
> 
> A standard hex dump has 16 

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Subject: Re: bug#79992: 30.2;
 feature request:  change readability in hexl-mode or nhexl-mode
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merge 79992 79991
severity 79992 wishlist
thanks

> Cc: Stefan Monnier <monnier@HIDDEN>
> Date: Thu, 11 Dec 2025 22:57:29 +0000
> From:  Jeremy Bryant via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN>
> 
> A hex dump typically has 16 bytes on the left one side, displayed as
> characters on the right like this:-
> 
> 00000000: 656d 6163 7366 6561 7475 7265 7265 7175  emacsfeaturerequ
> 
> 
> But there are also other typical conventions as below.
> Could we add the ability have a space in the middle, like this:-
> 
> 00000000: 656d 6163 7366 6561  7475 7265 7265 7175  emacsfea turerequ
> 
> And the spaces for each, like so:-
> 00000000: 65 6d 61 63 73 66 65 61 74 75 72 65 72 65 71 75  emacsfea urerequ
> 
> 
> Maybe this is possible already, maybe a patch could be prototyped, where
> to start?

This seems to be the missing part of bug#79991, so I'm merging them.

As to the feature request itself: patches are welcome, as always, but
please note that "there be dragons": the relevant modes AFAIR assume a
specific format, and there will be a need for a lot of refactoring to
adapt them to such changes.

Some of what you ask is already possible, see hexl-bits,
nhexl-line-width, and nhexl-group-size.

Last modified: Fri, 12 Dec 2025 08:45:02 UTC

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