From: Phillip Wood <phillip.wood123@gmail.com>
Date: Wed, 09 Aug 2023 13:04:06 GMT
Subject: Re: [PATCH 3/3] t/lib-rebase: improve documentation of set_fake_editor()
Message-ID: <8ce40f48-f36f-9e81-1a3f-9d8b170c4a0f@gmail.com>
In-Reply-To: <20230807170935.2336663-4-oswald.buddenhagen@gmx.de>

Hi Oswald

Thanks for splitting these patches up. We generally prefer commits 
message to be prose explaining the reason for the change rather than 
bullet points.

On 07/08/2023 18:09, Oswald Buddenhagen wrote:
> - Make it reflect better what actually happens.

> This makes it easier to
>    fully exploit the possibilities and to modify the code.

I don't really see how this follows from the first sentence.

> - Improve the structure, putting more general info further up.

Good idea

> - Document `fakesha` and `break`.

Great

> Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
> ---
> Cc: Phillip Wood <phillip.wood123@gmail.com>
> ---
>   t/lib-rebase.sh | 21 ++++++++++++---------
>   1 file changed, 12 insertions(+), 9 deletions(-)
> 
> diff --git a/t/lib-rebase.sh b/t/lib-rebase.sh
> index 9ed87ca7ab..184b25b427 100644
> --- a/t/lib-rebase.sh
> +++ b/t/lib-rebase.sh
> @@ -8,18 +8,21 @@
>   # - check that non-commit messages have a certain line count with $EXPECT_COUNT
>   # - check the commit count in the commit message header with $EXPECT_HEADER_COUNT
>   # - rewrite a rebase -i script as directed by $FAKE_LINES.
> -#   $FAKE_LINES consists of a sequence of words separated by spaces.
> -#   The following word combinations are possible:
> +#   $FAKE_LINES consists of a sequence of words separated by spaces;
> +#   spaces inside the words are encoded as underscores.
> +#   The following words are possible:
>   #
> -#   "<lineno>" -- add a "pick" line with the SHA1 taken from the
> -#       specified line.
> +#   "<cmd>" -- override the command for the next line specification. Can be
> +#       "pick", "squash", "fixup"|"fixup_-C"|"fixup_-c", "edit", "reword",
> +#       "drop", "merge[_-{c|C}_<SHA1>]", 

There is an inconsistency here in how we document fixup and merge. The 
former explicitly lists all possibilities and the latter uses a more 
compact notation. Note that we use docopt style descriptions for options 
so "{c|C}" would be written as "(c|C)". Also "merge -c/C" takes a 
commitish (which we could write as <rev>" rather than a hex object ID.

 > or "bad" for an invalid command.

This is a useful addition

> -#   "<cmd> <lineno>" -- add a line with the specified command
> -#       ("pick", "squash", "fixup"|"fixup_-C"|"fixup_-c", "edit", "reword" or "drop")
> -#       and the SHA1 taken from the specified line.
> +#   "<lineno>" -- add a command, using the specified line as a template.
> +#       If the command has not been overridden, the line will be copied
> +#       verbatim, usually resulting in a "pick" line.
>   #
> -#   "_" -- add a space, like "fixup_-C" implies "fixup -C" and
> -#       "exec_cmd_with_args" add an "exec cmd with args" line.
> +#   "fakesha" -- add a command ("pick" by default), using a fake SHA1.
> +#
> +#   "exec_[...]", "break" -- add the specified command.

Something like
	exec[_<command ...>]

would be more accurate I think

I think with a couple of tweaks this would be worthwhile improvement to 
the documentation. Having comprehensive coverage of all the commands is 
very welcome.

Thanks

Phillip