Re: bin/59956: gpt(8): show human-readable units

["Robert Elz via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR bin/59956; it has been noted by GNATS.

From: Robert Elz <kre%munnari.OZ.AU@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: netbsd-bugs%netbsd.org@localhost
Subject: Re: bin/59956: gpt(8): show human-readable units
Date: Tue, 10 Feb 2026 01:31:06 +0700

 I guess the ':' in my commit message (which was really planned
 to be after the PR number, not before) caused CVS to not send
 this commit message to gnats - so I will do it.
 
 From:    "Robert Elz" <kre%netbsd.org@localhost>
 Reply-To: source-changes-d%NetBSD.org@localhost
 Date:    Mon, 9 Feb 2026 17:21:28 +0000
 To:      source-changes%NetBSD.org@localhost
 Subject: CVS commit: src/sbin/gpt
 
 Module Name:	src
 Committed By:	kre
 Date:		Mon Feb  9 17:21:28 UTC 2026
 
 Modified Files:
 	src/sbin/gpt: gpt.8 show.c
 
 Log Message:
 PR: bin/59956 Add human friendly output (and more) to gpt show
 
 Many improvements to the output generated by "gpt show", essentially
 all conditioned by new options.
 
 Two that aren't are a fix to alignment of "gpt show -a" for the lines
 of data about the partition which follow the line giving the start
 block number, size, and partition type.  Now the following lines are
 correctly aligned, always - this change affects only the number of
 spaces before the data.
 
 And second, in that data, the "Size:" line now always shows the size
 of the partition in bytes - that was always what was shown in the tools
 build (where humanize_number is not available) but is now also shown
 (in parentheses in this case) after the human form output in non-tools
 builds (the size, in sectors, in the size column is not altered)
 
 Much more is available with new options.   First is an option (-p) available
 in all 3 output forms (which all existed previously), which generates
 precisely defined parsable output, which, once this percolates into all
 releases, will be allow gpt(8) to be used as a backend tool to manipulate
 the gpt tables in for any front end tool anyone wants to create.
 
 When that is not used, new options -A -H and -h can condition the size/start
 fields of the default "gpt show" output, and add some additional information
 to the "Size: " data line (not the size column) of "gpt show -a" output, the
 "gpt show -[ib] N" output is not modified.
 
 gpt show has also grown a -W width option (and when that is not used, a
 - -w alternative for when no other value can be found) for setting the desired
 output width (and a little data, generated with the new options above, can be
 aligned to the right margin - to defeat that, -W1 works).
 
 The manual page has been updated to document all of the above, the scaling 'K'
 allowed for the -s sectorsize general option added in a previous commit,
 and many wording, formatting, and random other changes have also been applied.
 
 Most of the "gpt show" output changes should be considered as
 exploratory, to see what works, and what people are happy with.
 Feel free to test, and comment upon how it seems, or could be
 improved.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.86 -r1.87 src/sbin/gpt/gpt.8
 cvs rdiff -u -r1.48 -r1.49 src/sbin/gpt/show.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.