Re: [PATCH] docs: fix check-docs with WITH_BREAKING_CHANGES

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FPhillip Wood <phillip.wood123@xxxxxxxxx> writes:

> On 07/03/2025 10:32, Phillip Wood wrote:
>> On 05/03/2025 15:53, Junio C Hamano wrote:
>>> We correctly omit builtin/pack-objects.o from BUILTIN_OBJS, but
>>> forgot to add "git pack-redundant" on the EXCLUDED_PROGRAMS list,
>>> which made "make check-docs" target notice that the command has been
>>> removed but still is documented.
>>>
>>> Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
>>> ---
>>>   * The command is still listed in the resulting "git help git"
>>>     output, as cmd-list.perl does not yet know which commands on the
>>>     list are to be ignored under WITH_BREAKING_CHANGES.
>>
>> Good catch. It seems the meson build was also forgotten in 68f51871df8
>> (builtin/pack-redundant: remove subcommand with breaking changes,
>> 2025-01-22) as we still compile builtin/pack-redundant.c and build the
>> documentation. We should probably wrap the function declaration for
>> cmd_pack_redundant() in builtin.h with "#ifndef WITH_BREAKING_CHANGES"
>> as well though I don't think that is urgent.
>
> I just had a look at fixing the meson build but it seems to be tricky as
> the manpage sources are stored in a meson dictionary and meson
> dictionaries are immutable so I don't know how one is supposed to
> conditionally add items.
>

But dictonaries can be combined [1]. So we could probably do something
like I've added below.

[1]: https://mesonbuild.com/Reference-manual_elementary_dict.html

-- 8< --

diff --git a/Documentation/meson.build b/Documentation/meson.build
index 0a0f2bfa14..fcfec63e9b 100644
--- a/Documentation/meson.build
+++ b/Documentation/meson.build
@@ -96,7 +96,6 @@ manpages = {
   'git-notes.adoc' : 1,
   'git-p4.adoc' : 1,
   'git-pack-objects.adoc' : 1,
-  'git-pack-redundant.adoc' : 1,
   'git-pack-refs.adoc' : 1,
   'git-patch-id.adoc' : 1,
   'git-prune-packed.adoc' : 1,
@@ -205,6 +204,14 @@ manpages = {
   'gitworkflows.adoc' : 7,
 }

+manpages_breaking_changes = {
+    'git-pack-redundant.adoc' : 1,
+}
+
+if not get_option('breaking_changes')
+  manpages += manpages_breaking_changes
+endif
+
 docs_backend = get_option('docs_backend')
 if docs_backend == 'auto'
   if find_program('asciidoc', dirs: program_path, required: false).found()
@@ -475,7 +482,7 @@ endif
 # Sanity check that we are not missing any tests present in 't/'. This check
 # only runs once at configure time and is thus best-effort, only. Furthermore,
 # it only verifies man pages for the sake of simplicity.
-configured_manpages = manpages.keys() + [ 'git-bisect-lk2009.adoc',
'git-tools.adoc' ]
+configured_manpages = manpages.keys() +
manpages_breaking_changes.keys() + [ 'git-bisect-lk2009.adoc',
'git-tools.adoc' ]
 actual_manpages = run_command(shell, '-c', 'ls git*.adoc scalar.adoc',
   check: true,
   env: script_environment,

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