Re: [PATCH 3/5] git-config: document --bool-or-str and --type=bool-or-str

> Document the new "bool-or-str" facility added in
> dbd8c09bfe (mergetool: allow auto-merge for meld to follow the
> vim-diff behavior, 2020-05-07).
>
> Unfortunately that commit also added a --bool-or-str option, even
> though we've preferred to deprecate that form ever since
> fb0dc3bac1 (builtin/config.c: support `--type=<type>` as preferred
> alias for `--<type>`, 2018-04-18).
>
> Since we've got it already let's document it along with the preferred
> --type=* form, and change our own code to use the --type=bool-or-str
> form over --bool-or-str.

>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
>  Documentation/git-config.txt | 3 +++
>  mergetools/meld              | 2 +-
>  2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/git-config.txt b/Documentation/git-config.txt
> index 4b4cc5c5e8..4ae9ef210c 100644
> --- a/Documentation/git-config.txt
> +++ b/Documentation/git-config.txt
> @@ -187,6 +187,8 @@ Valid `<type>`'s include:
>    1073741824 upon input.
>  - 'bool-or-int': canonicalize according to either 'bool' or 'int', as described
>    above.
> +- 'bool-or-str: canonicalize according to either 'bool' (as described
> +  above), or emit the value as-is.
>  - 'path': canonicalize by adding a leading `~` to the value of `$HOME` and
>    `~user` to the home directory for the specified user. This specifier has no
>    effect when setting the value (but you can use `git config section.variable
> @@ -202,6 +204,7 @@ Valid `<type>`'s include:
>  --bool::
>  --int::
>  --bool-or-int::
> +--bool-or-str::
>  --path::
>  --expiry-date::
>    Historical options for selecting a type specifier. Prefer instead `--type`
> diff --git a/mergetools/meld b/mergetools/meld
> index aab4ebb935..8386e0574e 100644
> --- a/mergetools/meld
> +++ b/mergetools/meld
> @@ -59,7 +59,7 @@ check_meld_for_features () {
>  	if test -z "$meld_use_auto_merge_option"
>  	then
>  		meld_use_auto_merge_option=$(
> -			git config --bool-or-str mergetool.meld.useAutoMerge
> +			git config --type=bool-or-str mergetool.meld.useAutoMerge
>  		)
>  		case "$meld_use_auto_merge_option" in
>  		true | false)