Re: [PATCH v5] send-email: export patch counters in validate environment

> diff --git a/templates/hooks--sendemail-validate.sample b/templates/hooks--sendemail-validate.sample
> new file mode 100755
> index 000000000000..ad2f9a86473d
> --- /dev/null
> +++ b/templates/hooks--sendemail-validate.sample
> @@ -0,0 +1,77 @@
> +#!/bin/sh
> +
> +# An example hook script to validate a patch (and/or patch series) before
> +# sending it via email.
> +#
> +# The hook should exit with non-zero status after issuing an appropriate
> +# message if it wants to prevent the email(s) from being sent.
> +#
> +# To enable this hook, rename this file to "sendemail-validate".
> +#
> +# By default, it will only check that the patch(es) can be applied on top of
> +# the default upstream branch without conflicts in a secondary worktree. After
> +# validation (successful or not) of the last patch of a series, the worktree
> +# will be deleted.
> +#
> +# The following config variables can be set to change the default remote and
> +# remote ref that are used to apply the patches against:
> +#
> +#   sendemail.validateRemote (default: origin)
> +#   sendemail.validateRemoteRef (default: HEAD)
> +#
> +# Replace the TODO placeholders with appropriate checks according to your
> +# needs.
> +
> +validate_cover_letter() {
> +	file="$1"
> +	# TODO: Replace with appropriate checks (e.g. spell checking).
> +	true
> +}
> +
> +validate_patch() {
> +	file="$1"
> +	# Ensure that the patch applies without conflicts.
> +	git am -3 "$file" || return
> +	# TODO: Replace with appropriate checks for this patch
> +	# (e.g. checkpatch.pl).
> +	true