Re: [PATCH] pull: colorize the hint about setting `pull.rebase`

[Junio C Hamano <gitster@pobox.com>]

"Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
writes:

> From: Johannes Schindelin <johannes.schindelin@gmx.de>
>
> In d18c950a69f (pull: warn if the user didn't say whether to rebase or
> to merge, 2020-03-09), a new hint was introduced to encourage users to
> make a conscious decision about whether they want their pull to merge or
> to rebase by configuring the `pull.rebase` setting.
>
> This warning was clearly intended to advise users, but as pointed out in
> https://lore.kernel.org/git/87ima2rdsm.fsf%40evledraar.gmail.com, it
> uses `warning()` instead of `advise()`.
>
> One consequence is that the advice is not colorized in the same manner
> as other, similar messages. So let's use `advise()` instead.

The advise() gives unconditional output like warning(), so we still
take advantage of the variable's self-squelching nature.  I am OK
with the change.

Besides coloring (which I personally find it distracting but not so
strongly to forbid others from using), advise() behaves better when
showing multi-line messages, and that would be another reason why
we want to use it over warning() here.

Will queue.  Thanks.

> Pointed-out-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> ---
>     pull: colorize the hint about setting pull.rebase
>     
>     I see that Junio briefly wondered
>     [https://lore.kernel.org/git/xmqqeeuecngu.fsf@gitster-ct.c.googlers.com/] 
>     about using an advice here, and concluded that it was not needed because
>     the warning is self-squelching (i.e. there is already a config setting
>     that will silence this warning). But that missed the fact that warnings
>     are not colorized, whereas advice is.
>
> Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-795%2Fdscho%2Fcolorize-pull.rebase-advice-v1
> Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-795/dscho/colorize-pull.rebase-advice-v1
> Pull-Request: https://github.com/gitgitgadget/git/pull/795
>
>  builtin/pull.c               | 24 ++++++++++++------------
>  t/t7601-merge-pull-config.sh |  7 +++++--
>  2 files changed, 17 insertions(+), 14 deletions(-)
>
> diff --git a/builtin/pull.c b/builtin/pull.c
> index 17aa63cd35..1034372f8b 100644
> --- a/builtin/pull.c
> +++ b/builtin/pull.c
> @@ -345,18 +345,18 @@ static enum rebase_type config_get_rebase(void)
>  		return parse_config_rebase("pull.rebase", value, 1);
>  
>  	if (opt_verbosity >= 0 && !opt_ff) {
> -		warning(_("Pulling without specifying how to reconcile divergent branches is\n"
> -			"discouraged. You can squelch this message by running one of the following\n"
> -			"commands sometime before your next pull:\n"
> -			"\n"
> -			"  git config pull.rebase false  # merge (the default strategy)\n"
> -			"  git config pull.rebase true   # rebase\n"
> -			"  git config pull.ff only       # fast-forward only\n"
> -			"\n"
> -			"You can replace \"git config\" with \"git config --global\" to set a default\n"
> -			"preference for all repositories. You can also pass --rebase, --no-rebase,\n"
> -			"or --ff-only on the command line to override the configured default per\n"
> -			"invocation.\n"));
> +		advise(_("Pulling without specifying how to reconcile divergent branches is\n"
> +			 "discouraged. You can squelch this message by running one of the following\n"
> +			 "commands sometime before your next pull:\n"
> +			 "\n"
> +			 "  git config pull.rebase false  # merge (the default strategy)\n"
> +			 "  git config pull.rebase true   # rebase\n"
> +			 "  git config pull.ff only       # fast-forward only\n"
> +			 "\n"
> +			 "You can replace \"git config\" with \"git config --global\" to set a default\n"
> +			 "preference for all repositories. You can also pass --rebase, --no-rebase,\n"
> +			 "or --ff-only on the command line to override the configured default per\n"
> +			 "invocation.\n"));
>  	}
>  
>  	return REBASE_FALSE;
> diff --git a/t/t7601-merge-pull-config.sh b/t/t7601-merge-pull-config.sh
> index c5c4ea5fc0..6774e9d86f 100755
> --- a/t/t7601-merge-pull-config.sh
> +++ b/t/t7601-merge-pull-config.sh
> @@ -29,8 +29,11 @@ test_expect_success 'setup' '
>  
>  test_expect_success 'pull.rebase not set' '
>  	git reset --hard c0 &&
> -	git pull . c1 2>err &&
> -	test_i18ngrep "Pulling without specifying how to reconcile" err
> +	git -c color.advice=always pull . c1 2>err &&
> +	test_decode_color <err >decoded &&
> +	test_i18ngrep "<YELLOW>hint: " decoded &&
> +	test_i18ngrep "Pulling without specifying how to reconcile" decoded
> +
>  '
>  
>  test_expect_success 'pull.rebase not set and pull.ff=true' '
>
> base-commit: faefdd61ec7c7f6f3c8c9907891465ac9a2a1475