Re: [PATCH 2/2] filter-branch: use git-sh-setup's ident parsing functions

> -# When piped a commit, output a script to set the ident of either
> -# "author" or "committer
> +# Ensure non-empty id name.
> +fallback_name() {
> +	echo "case \"\$GIT_$1_NAME\" in \"\") GIT_$1_NAME=\"\${GIT_$1_EMAIL%%@*}\" && export GIT_$1_NAME;; esac"
> +}
>  
>  set_ident () {
> -	lid="$(echo "$1" | tr "[A-Z]" "[a-z]")"
> -	uid="$(echo "$1" | tr "[a-z]" "[A-Z]")"
> -	pick_id_script='
> -		/^'$lid' /{
> -			s/'\''/'\''\\'\'\''/g
> -			h
> -			s/^'$lid' \([^<]*\) <[^>]*> .*$/\1/
> -			s/'\''/'\''\'\'\''/g
> -			s/.*/GIT_'$uid'_NAME='\''&'\''; export GIT_'$uid'_NAME/p
> -
> -			g
> -			s/^'$lid' [^<]* <\([^>]*\)> .*$/\1/
> -			s/'\''/'\''\'\'\''/g
> -			s/.*/GIT_'$uid'_EMAIL='\''&'\''; export GIT_'$uid'_EMAIL/p
> -
> -			g
> -			s/^'$lid' [^<]* <[^>]*> \(.*\)$/@\1/
> -			s/'\''/'\''\'\'\''/g
> -			s/.*/GIT_'$uid'_DATE='\''&'\''; export GIT_'$uid'_DATE/p
> -
> -			q
> -		}
> -	'
> -
> -	LANG=C LC_ALL=C sed -ne "$pick_id_script"
> -	# Ensure non-empty id name.
> -	echo "case \"\$GIT_${uid}_NAME\" in \"\") GIT_${uid}_NAME=\"\${GIT_${uid}_EMAIL%%@*}\" && export GIT_${uid}_NAME;; esac"
> +	parse_ident_from_commit author AUTHOR committer COMMITTER
> +	fallback_name AUTHOR
> +	fallback_name COMMITTER
>  }