GNU bug report logs - #32400
Context and unified hunk formats not fully documented - no mention of --show-c-function / --show-function-line effect on headers

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Package: diffutils; Reported by: Philippe Cloutier <chealer@HIDDEN>; dated Wed, 8 Aug 2018 14:44:01 UTC; Maintainer for diffutils is bug-diffutils@HIDDEN.

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From: Philippe Cloutier <chealer@HIDDEN>
Date: Wed, 8 Aug 2018 10:43:17 -0400
Message-ID: <CANA_mJKGmNAiwXaFOfV1H1Q-vtea_sswZFcsOoyMpgW6aw70EA@HIDDEN>
Subject: Context and unified hunk formats not fully documented - no mention of
 --show-c-function / --show-function-line effect on headers
To: bug-diffutils@HIDDEN
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Severity: normal

The info documentation describes headers of these formats:
Context: https://www.gnu.org/software/diffutils/manual/html_node/Context-Format.html
Unified: https://www.gnu.org/software/diffutils/manual/html_node/Unified-Format.html
It assumes that none of the following options was activated:
--show-c-function:
https://www.gnu.org/software/diffutils/manual/html_node/C-Function-Headings.html
--show-function-line:
https://www.gnu.org/software/diffutils/manual/html_node/Specified-Headings.html
When they are activated, the format of the header of some hunks is not
documented.

For example, a unified format hunk header can be "@@ -5,8 +5,10 @@
defmodule Quicksort do", as shown in the second diff on
https://kennyballou.com/blog/2015/10/art-manually-edit-hunks/

This is confusing, and may cause users to think a patch generated by
diff is broken.




Acknowledgement sent to Philippe Cloutier <chealer@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-diffutils@HIDDEN. Full text available.
Report forwarded to bug-diffutils@HIDDEN:
bug#32400; Package diffutils. Full text available.
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Last modified: Wed, 8 Aug 2018 14:45:01 UTC

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