Merge branch 'feature/remove-_ob_local'.

10 files changed, 730 insertions, 842 deletions

diff --git a/lib/changelog.sh b/lib/changelog.sh
index 2f1515f..9aaa0b9 100644
--- a/lib/changelog.sh
+++ b/lib/changelog.sh
@@ -33,174 +33,178 @@ OB_CHANGELOG_DATE=
 
 ob_parse_changelog()
 {
-	_ob_local _obpch_file _obpch_entry_cb \
-		_obpch_line_nr _obpch_line _obpch_line_ \
-		_obpch_expect _obpch_blank_lines \
-		_obpch_source _obpch_distribution _obpch_version \
-		_obpch_maintainer _obpch_date
+	local file=
+	local entry_cb=
+	local line_nr=
+	local line=
+	local line_=
+	local expect=
+	local blank_lines=
+	local source=
+	local distribution=
+	local version=
+	local maintainer=
+	local date=
 
 	if [ ${#} -eq 2 ]; then
-		_obpch_file="${1}"
-		_obpch_entry_cb="${2}"
+		file="${1}"
+		entry_cb="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# Parsing logic based on that of dpkg.
 
-	_obpch_line_nr=0
-	_obpch_expect='first_heading'
+	line_nr=0
+	expect='first_heading'
 
-	while IFS= read _obpch_line; do
-		_obpch_line_nr=$(($_obpch_line_nr + 1))
-		if [ -z "${_obpch_line}" ]; then
-			if [ "${_obpch_expect}" = 'start_changes' ]; then
+	while IFS= read line; do
+		line_nr=$(($line_nr + 1))
+		if [ -z "${line}" ]; then
+			if [ "${expect}" = 'start_changes' ]; then
 				OB_CHANGELOG_CHANGES="${OB_CHANGELOG_CHANGES}
-${_obpch_line}"
-			elif [ "${_obpch_expect}" = 'next_or_eof' ]; then
+${line}"
+			elif [ "${expect}" = 'next_or_eof' ]; then
 				:
-			elif [ "${_obpch_expect}" != 'changes_or_trailer' ]; then
-				_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+			elif [ "${expect}" != 'changes_or_trailer' ]; then
+				_ob_parse_changelog_error "${file}" "${line_nr}" \
 					'changelog_found_blank_line' \
-					"$(_ob_get_changelog_expect_str "${_obpch_expect}")"
+					"$(_ob_get_changelog_expect_str "${expect}")"
 			else
-				_obpch_blank_lines="${_obpch_blank_lines}
-${_obpch_line}"
+				blank_lines="${blank_lines}
+${line}"
 			fi
-		elif [ "${_obpch_line# }" = "${_obpch_line}" ]; then
-			if [ "${_obpch_expect}" != 'first_heading' -a \
-					"${_obpch_expect}" != 'next_or_eof' ]; then
-				_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+		elif [ "${line# }" = "${line}" ]; then
+			if [ "${expect}" != 'first_heading' -a \
+					"${expect}" != 'next_or_eof' ]; then
+				_ob_parse_changelog_error "${file}" "${line_nr}" \
 					'changelog_found_heading' \
-					"$(_ob_get_changelog_expect_str "${_obpch_expect}")"
+					"$(_ob_get_changelog_expect_str "${expect}")"
 			fi
-			_obpch_source="${_obpch_line%% (*}"
-			_obpch_line_="${_obpch_line#* (}"
-			_obpch_distribution="${_obpch_line_##*) }"
-			_obpch_line_="${_obpch_line_%) *}"
-			_obpch_version="${_obpch_line_}"
-			if [ -z "${_obpch_source}" -o -z "${_obpch_distribution}" -o \
-					-z "${_obpch_version}" -o \
-					"${_obpch_version% *}" != "${_obpch_version}" ]; then
-				_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+			source="${line%% (*}"
+			line_="${line#* (}"
+			distribution="${line_##*) }"
+			line_="${line_%) *}"
+			version="${line_}"
+			if [ -z "${source}" -o -z "${distribution}" -o \
+					-z "${version}" -o \
+					"${version% *}" != "${version}" ]; then
+				_ob_parse_changelog_error "${file}" "${line_nr}" \
 					'changelog_bad_heading'
 				OB_CHANGELOG_SOURCE=
 				OB_CHANGELOG_VERSION=
 				OB_CHANGELOG_DISTRIBUTION=
 				OB_CHANGELOG_CHANGES=
 			else
-				if ! ob_validate_source_name "${_obpch_source}"; then
+				if ! ob_validate_source_name "${source}"; then
 					_ob_parse_changelog_error \
-						"${_obpch_file}" "${_obpch_line_nr}" \
+						"${file}" "${line_nr}" \
 						'changelog_bad_source' "${source}"
 				fi
-				if ! ob_parse_version "${_obpch_version}"; then
+				if ! ob_parse_version "${version}"; then
 					_ob_parse_changelog_error \
-						"${_obpch_file}" "${_obpch_line_nr}" \
-						'changelog_bad_source_version' "${_obpch_version}"
+						"${file}" "${line_nr}" \
+						'changelog_bad_source_version' "${version}"
 				fi
-				OB_CHANGELOG_SOURCE="${_obpch_source}"
-				OB_CHANGELOG_VERSION="${_obpch_version}"
-				OB_CHANGELOG_DISTRIBUTION="${_obpch_distribution}"
-				OB_CHANGELOG_CHANGES="${_obpch_line}"
+				OB_CHANGELOG_SOURCE="${source}"
+				OB_CHANGELOG_VERSION="${version}"
+				OB_CHANGELOG_DISTRIBUTION="${distribution}"
+				OB_CHANGELOG_CHANGES="${line}"
 			fi
-			_obpch_expect='start_changes'
-			_obpch_blank_lines=
-		elif [ "${_obpch_line# -- }" != "${_obpch_line}" ]; then
-			if [ "${_obpch_expect}" != 'changes_or_trailer' ]; then
-				_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+			expect='start_changes'
+			blank_lines=
+		elif [ "${line# -- }" != "${line}" ]; then
+			if [ "${expect}" != 'changes_or_trailer' ]; then
+				_ob_parse_changelog_error "${file}" "${line_nr}" \
 					'changelog_found_trailer' \
-					"$(_ob_get_changelog_expect_str "${_obpch_expect}")"
+					"$(_ob_get_changelog_expect_str "${expect}")"
 			fi
-			_obpch_line="${_obpch_line# -- }"
-			_obpch_maintainer="${_obpch_line%%  *}"
-			_obpch_date="${_obpch_line#*  }"
-			if [ -z "${_obpch_maintainer}" -o -z "${_obpch_date}" -o \
-					"${_obpch_maintainer}" = "${_obpch_date}" ]; then
-				_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+			line="${line# -- }"
+			maintainer="${line%%  *}"
+			date="${line#*  }"
+			if [ -z "${maintainer}" -o -z "${date}" -o \
+					"${maintainer}" = "${date}" ]; then
+				_ob_parse_changelog_error "${file}" "${line_nr}" \
 					'changelog_bad_trailer'
 				OB_CHANGELOG_MAINTAINER=
 				OB_CHANGELOG_DATE=
 			elif [ -n "${OB_CHANGELOG_SOURCE}" ]; then
-				OB_CHANGELOG_MAINTAINER="${_obpch_maintainer}"
-				OB_CHANGELOG_DATE="${_obpch_date}"
-				"${_obpch_entry_cb}"
+				OB_CHANGELOG_MAINTAINER="${maintainer}"
+				OB_CHANGELOG_DATE="${date}"
+				"${entry_cb}"
 				if [ ${?} -ne 0 ]; then
-					_ob_return 0
-					return ${?}
+					return 0
 				fi
 			fi
-			_obpch_expect='next_or_eof'
-			_obpch_blank_lines=
-		elif [ "${_obpch_line# --}" != "${_obpch_line}" ]; then
-			_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+			expect='next_or_eof'
+			blank_lines=
+		elif [ "${line# --}" != "${line}" ]; then
+			_ob_parse_changelog_error "${file}" "${line_nr}" \
 				'changelog_bad_trailer'
-		elif [ "${_obpch_line##  }" != "${_obpch_line}" ]; then
-			if [ "${_obpch_expect}" != 'start_changes' -a \
-					"${_obpch_expect}" != 'changes_or_trailer' ]; then
-				_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+		elif [ "${line##  }" != "${line}" ]; then
+			if [ "${expect}" != 'start_changes' -a \
+					"${expect}" != 'changes_or_trailer' ]; then
+				_ob_parse_changelog_error "${file}" "${line_nr}" \
 					'changelog_found_change' \
-					"$(_ob_get_changelog_expect_str "${_obpch_expect}")"
+					"$(_ob_get_changelog_expect_str "${expect}")"
 			fi
 			OB_CHANGELOG_CHANGES="${OB_CHANGELOG_CHANGES}
-${_obpch_blank_lines}${_obpch_line}"
-			_obpch_expect='changes_or_trailer'
-			_obpch_blank_lines=
+${blank_lines}${line}"
+			expect='changes_or_trailer'
+			blank_lines=
 		else
-			_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+			_ob_parse_changelog_error "${file}" "${line_nr}" \
 				'changelog_bad_line'
-			_obpch_blank_lines=
+			blank_lines=
 		fi
 	done <<-EOF
-		$(cat "${_obpch_file}")
+		$(cat "${file}")
 		EOF
 
-	if [ "${_obpch_expect}" != 'next_or_eof' ]; then
-		_ob_parse_changelog_error "${_obpch_file}" "${_obpch_line_nr}" \
+	if [ "${expect}" != 'next_or_eof' ]; then
+		_ob_parse_changelog_error "${file}" "${line_nr}" \
 			'changelog_found_eof' \
-			"$(_ob_get_changelog_expect_str "${_obpch_expect}")"
+			"$(_ob_get_changelog_expect_str "${expect}")"
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_parse_changelog_error()
 {
-	_ob_local _obpche_file _obpche_line_nr _obpche_msg_id \
-		_obpche_file_info _obpche_orig_text_domain
-
-	_obpche_file="${1}"
-	_obpche_line_nr="${2}"
-	_obpche_msg_id="${3}"
+	local file=
+	local line_nr=
+	local msg_id=
+	local file_info=
+	local orig_text_domain=
+
+	file="${1}"
+	line_nr="${2}"
+	msg_id="${3}"
 	shift 3
 
-	_obpche_file_info="$(printf '%20s(l%d):' "${_obpche_file}" \
-		"${_obpche_line_nr}")"
+	file_info="$(printf '%20s(l%d):' "${file}" "${line_nr}")"
 
-	_obpche_orig_text_domain="$(ob_get_text_domain)"
+	orig_text_domain="$(ob_get_text_domain)"
 	ob_set_text_domain "${_OB_INTERNAL_TEXT_DOMAIN}"
 
-	ob_warn "${_obpche_file_info} $(ob_get_msg "${_obpche_msg_id}")" "${@}"
+	ob_warn "${file_info} $(ob_get_msg "${msg_id}")" "${@}"
 
-	ob_set_text_domain "${_obpche_orig_text_domain}"
+	ob_set_text_domain "${orig_text_domain}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_changelog_expect_str()
 {
-	_ob_local _obgces_orig_text_domain
+	local orig_text_domain=
 
-	_obgces_orig_text_domain="$(ob_get_text_domain)"
+	orig_text_domain="$(ob_get_text_domain)"
 	ob_set_text_domain "${_OB_INTERNAL_TEXT_DOMAIN}"
 
 	echo "$(ob_get_msg "changelog_expect_${1}")"
 
-	ob_set_text_domain "${_obgces_orig_text_domain}"
+	ob_set_text_domain "${orig_text_domain}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
diff --git a/lib/common.sh b/lib/common.sh
index 174f3ab..3fd3cc5 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -20,35 +20,6 @@
 [ -n "${_OB_COMMON_SM}" ] && return 0
 _OB_COMMON_SM='true'
 
-_OB_STACK_VARS=
-_OB_SAVED_IFS=
-
-_ob_local()
-{
-	# Push the variable list onto the stack.
-	_OB_STACK_VARS="${_OB_STACK_VARS}|${*}"
-
-	# Save the old IFS value, if any, and set it to its default.
-	_OB_SAVED_IFS="${IFS}"
-	IFS=' 	
-'
-}
-
-_ob_return()
-{
-	# Unset the variables at the top of the stack.
-	IFS=' '
-	unset -v ${_OB_STACK_VARS##*|}
-
-	# Pop the variable list from the top of the stack.
-	_OB_STACK_VARS="${_OB_STACK_VARS%|*}"
-
-	# Restore the saved IFS.
-	IFS="${_OB_SAVED_IFS}"
-
-	return ${1}
-}
-
 _ob_validate_var_name()
 {
 	case "${1}" in
diff --git a/lib/control.sh b/lib/control.sh
index 4c38583..f3f3a4f 100644
--- a/lib/control.sh
+++ b/lib/control.sh
@@ -30,146 +30,147 @@ OB_CONTROL_VALUE=
 
 ob_parse_control()
 {
-	_ob_local _obpco_file _obpco_field_cb _obpco_req_fields _obpco_opt_fields \
-		_obpco_check_fields _obpco_all_fields _obpco_got_fields \
-		_obpco_line_nr _obpco_line _obpco_name _obpco_value
+	local file=
+	local field_cb=
+	local req_fields=
+	local opt_fields=
+	local check_fields=
+	local all_fields=
+	local got_fields=
+	local line_nr=
+	local line=
+	local name=
+	local value=
 
 	if [ ${#} -eq 2 ]; then
-		_obpco_file="${1}"
-		_obpco_field_cb="${2}"
-		_obpco_check_fields='false'
+		file="${1}"
+		field_cb="${2}"
+		check_fields='false'
 	elif [ ${#} -eq 4 ]; then
-		_obpco_file="${1}"
-		_obpco_field_cb="${2}"
-		_obpco_req_fields="${3}"
-		_obpco_opt_fields="${4}"
-		_obpco_check_fields='true'
-		_obpco_all_fields=" ${_obpco_req_fields} ${_obpco_opt_fields} "
+		file="${1}"
+		field_cb="${2}"
+		req_fields="${3}"
+		opt_fields="${4}"
+		check_fields='true'
+		all_fields=" ${req_fields} ${opt_fields} "
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_obpco_got_fields=' '
+	got_fields=' '
 
-	_obpco_line_nr=0
+	line_nr=0
 
-	while IFS= read -r _obpco_line; do
-		_obpco_line_nr=$(($_obpco_line_nr + 1))
-		if [ -z "$(echo ${_obpco_line})" ]; then
-			_ob_parse_control_error "${_obpco_file}" "${_obpco_line_nr}" \
+	while IFS= read -r line; do
+		line_nr=$(($line_nr + 1))
+		if [ -z "$(echo ${line})" ]; then
+			_ob_parse_control_error "${file}" "${line_nr}" \
 				'control_empty_line'
-		elif [ "${_obpco_line#\#}" != "${_obpco_line}" ]; then
+		elif [ "${line#\#}" != "${line}" ]; then
 			# Comment.
 			:
-		elif [ "${_obpco_line# }" = "${_obpco_line}" ]; then
+		elif [ "${line# }" = "${line}" ]; then
 			# "Name: Value" line.
-			if [ -n "${_obpco_name}" ]; then
-				OB_CONTROL_NAME="${_obpco_name}"
-				OB_CONTROL_VALUE="${_obpco_value}"
-				"${_obpco_field_cb}"
+			if [ -n "${name}" ]; then
+				OB_CONTROL_NAME="${name}"
+				OB_CONTROL_VALUE="${value}"
+				"${field_cb}"
 				if [ ${?} -ne 0 ]; then
-					_ob_return 0
-					return ${?}
+					return 0
 				fi
 			fi
-			_obpco_name="${_obpco_line%%:*}"
-			_obpco_value="${_obpco_line#*:}"
-			_obpco_value="${_obpco_value# }"
-			if [ -z "${_obpco_name}" \
-				-o "${_obpco_name}" = "${_obpco_line}" ]; then
+			name="${line%%:*}"
+			value="${line#*:}"
+			value="${value# }"
+			if [ -z "${name}" \
+				-o "${name}" = "${line}" ]; then
 				# Badly formatted control field.
-				_ob_parse_control_error "${_obpco_file}" "${_obpco_line_nr}" \
+				_ob_parse_control_error "${file}" "${line_nr}" \
 					'control_bad_nv'
 				continue
 			fi
-			if ${_obpco_check_fields}; then
-				if [ "${_obpco_all_fields% ${_obpco_name} *}" = \
-						"${_obpco_all_fields}" ]; then
+			if ${check_fields}; then
+				if [ "${all_fields% ${name} *}" = \
+						"${all_fields}" ]; then
 					# Unknown field.
 					_ob_parse_control_error \
-						"${_obpco_file}" "${_obpco_line_nr}" \
-						'control_unknown_field' "${_obpco_name}"
+						"${file}" "${line_nr}" \
+						'control_unknown_field' "${name}"
 				else
 					# Remove field from list of required fields.
-					_obpco_req_fields="$(echo "${_obpco_req_fields}" | \
-						sed "s/${_obpco_name}//")"
+					req_fields="$(echo "${req_fields}" | \
+						sed "s/${name}//")"
 				fi
 			fi
-			if [ "${_obpco_got_fields% ${_obpco_name} *}" != \
-					"${_obpco_got_fields}" ]; then
+			if [ "${got_fields% ${name} *}" != \
+					"${got_fields}" ]; then
 				# Duplicate field.
-				_ob_parse_control_error "${_obpco_file}" "${_obpco_line_nr}" \
-					'control_duplicate_field' "${_obpco_name}"
+				_ob_parse_control_error "${file}" "${line_nr}" \
+					'control_duplicate_field' "${name}"
 			else
-				_obpco_got_fields="${_obpco_got_fields}${_obpco_name} "
+				got_fields="${got_fields}${name} "
 			fi
 		else
 			# Continuation line.
-			if [ -z "${_obpco_name}" ]; then
+			if [ -z "${name}" ]; then
 				# Expecting a "Name: Value" line.
-				_ob_parse_control_error "${_obpco_file}" "${_obpco_line_nr}" \
+				_ob_parse_control_error "${file}" "${line_nr}" \
 					'control_found_continuation'
 				continue
 			fi
-			_obpco_value="${_obpco_value}
-${_obpco_line# }"
+			value="${value}
+${line# }"
 		fi
 	done <<-EOF
-		$(cat "${_obpco_file}")
+		$(cat "${file}")
 		EOF
 
-	if [ -n "${_obpco_name}" ]; then
-		OB_CONTROL_NAME="${_obpco_name}"
-		OB_CONTROL_VALUE="${_obpco_value}"
-		"${_obpco_field_cb}"
+	if [ -n "${name}" ]; then
+		OB_CONTROL_NAME="${name}"
+		OB_CONTROL_VALUE="${value}"
+		"${field_cb}"
 		if [ ${?} -ne 0 ]; then
-			_ob_return 0
-			return ${?}
+			return 0
 		fi
 	fi
 
-	if ${_obpco_check_fields}; then
-		_obpco_req_fields="${_obpco_req_fields## }"
-		_obpco_req_fields="${_obpco_req_fields%% }"
-		if [ -n "${_obpco_req_fields}" ]; then
+	if ${check_fields}; then
+		req_fields="${req_fields## }"
+		req_fields="${req_fields%% }"
+		if [ -n "${req_fields}" ]; then
 			# Missing required control fields.
-			_obpco_req_fields="$(echo "${_obpco_req_fields}" | \
-				sed 's/  / /g' | \
+			req_fields="$(echo "${req_fields}" | sed 's/  / /g' | \
 				sed "s/ /$(ob_get_msg 'list_item_separator')/g")"
-			_ob_parse_control_error "${_obpco_file}" '0' \
-				'control_missing_fields' \
-				"${_obpco_req_fields}"
+			_ob_parse_control_error "${file}" '0' \
+				'control_missing_fields' "${req_fields}"
 		fi
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_set_substvar()
 {
-	_ob_local _obssv_name _obssv_value
+	local name=
+	local value=
 
 	if [ ${#} -eq 2 ]; then
-		_obssv_name="${1}"
-		_obssv_value="${2}"
+		name="${1}"
+		value="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# Convert variable name to uppercase and validate.
-	_obssv_name="$(echo "${_obssv_name}" | tr 'a-z-' 'A-Z_')"
-	case "${_obssv_name:- }" in
+	name="$(echo "${name}" | tr 'a-z-' 'A-Z_')"
+	case "${name:- }" in
 		*[!A-Z0-9_]*)
-			_ob_return 125
-			return ${?}
+			return 125
 			;;
 	esac
 
 	# Trim leading and trailing whitespace from value.
-	_obssv_value="$(echo "${_obssv_value}" | sed -n '
+	value="$(echo "${value}" | sed -n '
 		H;                # Store each input line in the hold space.
 		${                # At the last line of input, …
 		  g;              # … restore the hold space into the pattern space, …
@@ -180,90 +181,92 @@ ob_set_substvar()
 		')"
 
 	# Escape single quotes in value.
-	_obssv_value="$(printf '%s\n' "${_obssv_value}" | sed "s/'/'\\\\''/g")"
+	value="$(printf '%s\n' "${value}" | sed "s/'/'\\\\''/g")"
 
-	eval "_OB_SUBSTVAR_${_obssv_name}='${_obssv_value}'"
+	eval "_OB_SUBSTVAR_${name}='${value}'"
 
-	_ob_return 125
-	return ${?}
+	return 125
 }
 
 ob_substvars()
 {
-	_ob_local _obsv_string _obsv_depth \
-		_obsv_lhs _obsv_name _obsv_rhs _obsv_old_rhs _obsv_value
+	local string=
+	local depth=
+	local lhs=
+	local name=
+	local rhs=
+	local old_rhs=
+	local value=
 
 	if [ ${#} -eq 1 ]; then
-		_obsv_string="${1}"
+		string="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# Logic inspired by that of dpkg's Dpkg::Substvars::substvars() subroutine.
 
-	_obsv_depth=0
+	depth=0
 
 	while true; do
-		_obsv_lhs="${_obsv_string%%\$\{*}"
-		if [ ${#_obsv_lhs} -eq ${#_obsv_string} ]; then
+		lhs="${string%%\$\{*}"
+		if [ ${#lhs} -eq ${#string} ]; then
 			# No "${" was found.
 			break
 		fi
-		_obsv_string="${_obsv_string#*\$\{}"
-		_obsv_name="${_obsv_string%%\}*}"
-		_obsv_rhs="${_obsv_string#*\}}"
+		string="${string#*\$\{}"
+		name="${string%%\}*}"
+		rhs="${string#*\}}"
 
-		if [ ${#_obsv_rhs} -lt ${#_obsv_old_rhs} ]; then
+		if [ ${#rhs} -lt ${#old_rhs} ]; then
 			# Reset the nesting counter if we've advanced the right side of the
 			# matched space.
-			_obsv_depth=0
+			depth=0
 		fi
-		if [ ${_obsv_depth} -ge ${_OB_SUBSTVARS_MAX_DEPTH} ]; then
+		if [ ${depth} -ge ${_OB_SUBSTVARS_MAX_DEPTH} ]; then
 			# Warn of possible recursion.
 			ob_warn "$(ob_get_msg 'substvar_deep_nesting')"
-			_ob_return 1
-			return ${?}
+			return 1
 		fi
-		_obsv_old_rhs="${_obsv_rhs}"
+		old_rhs="${rhs}"
 
 		# Perform the substitution.
-		_obsv_name="$(echo "${_obsv_name}" | tr 'a-z-' 'A-Z_')"
-		_obsv_value="$(eval echo \"\$\{"_OB_SUBSTVAR_${_obsv_name}"\}\")"
-		_obsv_string="${_obsv_lhs}${_obsv_value}${_obsv_rhs}"
-		_obsv_depth=$(($_obsv_depth + 1))
+		name="$(echo "${name}" | tr 'a-z-' 'A-Z_')"
+		value="$(eval echo \"\$\{"_OB_SUBSTVAR_${name}"\}\")"
+		string="${lhs}${value}${rhs}"
+		depth=$(($depth + 1))
 	done
 
-	printf '%s\n' "${_obsv_string}"
+	printf '%s\n' "${string}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_parse_control_error()
 {
-	_ob_local _obpcoe_file _obpcoe_line_nr _obpcoe_msg_id \
-		_obpcoe_file_info _obpcoe_orig_text_domain
-
-	_obpcoe_file="${1}"
-	_obpcoe_line_nr="${2}"
-	_obpcoe_msg_id="${3}"
+	local file=
+	local line_nr=
+	local msg_id=
+	local file_info=
+	local orig_text_domain=
+
+	file="${1}"
+	line_nr="${2}"
+	msg_id="${3}"
 	shift 3
 
-	if [ "${_obpcoe_line_nr}" -eq 0 ]; then
-		_obpcoe_file_info="$(printf '%20s:' "${_obpcoe_file}")"
+	if [ "${line_nr}" -eq 0 ]; then
+		file_info="$(printf '%20s:' "${file}")"
 	else
-		_obpcoe_file_info="$(printf '%20s(l%d):' "${_obpcoe_file}" \
-			"${_obpcoe_line_nr}")"
+		file_info="$(printf '%20s(l%d):' "${file}" "${line_nr}")"
 	fi
 
-	_obpcoe_orig_text_domain="$(ob_get_text_domain)"
+	orig_text_domain="$(ob_get_text_domain)"
 	ob_set_text_domain "${_OB_INTERNAL_TEXT_DOMAIN}"
 
-	ob_warn "${_obpcoe_file_info} $(ob_get_msg "${_obpcoe_msg_id}")" "${@}"
+	ob_warn "${file_info} $(ob_get_msg "${msg_id}")" "${@}"
 
-	ob_set_text_domain "${_obpcoe_orig_text_domain}"
+	ob_set_text_domain "${orig_text_domain}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
diff --git a/lib/deps.sh b/lib/deps.sh
index e38680a..8ac3133 100644
--- a/lib/deps.sh
+++ b/lib/deps.sh
@@ -24,73 +24,80 @@ ob_use metadata
 
 ob_parse_dep()
 {
-	_ob_local _obpd_opt _obpd_pkg_var _obpd_archqual_var _obpd_rel_var \
-		_obpd_ver_var _obpd_arches_var _obpd_plats_var \
-		_obpd_host_arch _obpd_host_plat _obpd_dep \
-		_obpd_pkgarchqual _obpd_pkg _obpd_archqual \
-		_obpd_relver _obpd_rel _obpd_ver _obpd_arches _obpd_plats \
-		_obpd_comp _obpd_comp_var
-
-	while getopts 'p:q:r:v:A:l:a:P:' _obpd_opt; do
-		case "${_obpd_opt}" in
+	local opt=
+	local pkg_var=
+	local archqual_var=
+	local rel_var=
+	local ver_var=
+	local arches_var=
+	local plats_var=
+	local host_arch=
+	local host_plat=
+	local dep=
+	local pkgarchqual=
+	local pkg=
+	local archqual=
+	local relver=
+	local rel=
+	local ver=
+	local arches=
+	local plats=
+	local comp=
+	local comp_var=
+
+	while getopts 'p:q:r:v:A:l:a:P:' opt; do
+		case "${opt}" in
 			p)
-				_obpd_pkg_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpd_pkg_var}"; then
-					_ob_return 125
-					return ${?}
+				pkg_var="${OPTARG}"
+				if ! _ob_validate_var_name "${pkg_var}"; then
+					return 125
 				fi
 				;;
 			q)
-				_obpd_archqual_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpd_archqual_var}"; then
-					_ob_return 125
-					return ${?}
+				archqual_var="${OPTARG}"
+				if ! _ob_validate_var_name "${archqual_var}"; then
+					return 125
 				fi
 				;;
 			r)
-				_obpd_rel_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpd_rel_var}"; then
-					_ob_return 125
-					return ${?}
+				rel_var="${OPTARG}"
+				if ! _ob_validate_var_name "${rel_var}"; then
+					return 125
 				fi
 				;;
 			v)
-				_obpd_ver_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpd_ver_var}"; then
-					_ob_return 125
-					return ${?}
+				ver_var="${OPTARG}"
+				if ! _ob_validate_var_name "${ver_var}"; then
+					return 125
 				fi
 				;;
 			A)
-				_obpd_arches_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpd_arches_var}"; then
-					_ob_return 125
-					return ${?}
+				arches_var="${OPTARG}"
+				if ! _ob_validate_var_name "${arches_var}"; then
+					return 125
 				fi
 				;;
 			l)
-				_obpd_plats_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpd_plats_var}"; then
-					_ob_return 125
-					return ${?}
+				plats_var="${OPTARG}"
+				if ! _ob_validate_var_name "${plats_var}"; then
+					return 125
 				fi
 				;;
 			a)
-				_obpd_host_arch="${OPTARG}"
+				host_arch="${OPTARG}"
 				;;
 			P)
-				_obpd_host_plat="${OPTARG}"
+				host_plat="${OPTARG}"
 				;;
 			?)
-				_ob_return 125
-				return ${?}
+				return 125
 				;;
 		esac
 	done
 	shift $(($OPTIND - 1))
 
 	if [ ${#} -eq 1 ]; then
-		_obpd_dep="$(printf '%s\n' "${1}" | sed -n '
+		dep="$(printf '%s\n' "${1}" | sed -n '
 			H;                        # Store each input line in the hold space.
 			${
 			  g;                      # Restore everything to the pattern space.
@@ -107,141 +114,141 @@ ob_parse_dep()
 			};
 			')"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# pkg[:archqual] [(rel ver)] [\[arches\]] [<plats>]
 
-	_obpd_pkgarchqual="${_obpd_dep%% *}"
-	_obpd_dep=" ${_obpd_dep#* }"
-	_obpd_pkg="${_obpd_pkgarchqual%:*}"
-	if [ "${_obpd_pkg}" != "${_obpd_pkgarchqual}" ]; then
-		_obpd_archqual="${_obpd_pkgarchqual##*:}"
+	pkgarchqual="${dep%% *}"
+	dep=" ${dep#* }"
+	pkg="${pkgarchqual%:*}"
+	if [ "${pkg}" != "${pkgarchqual}" ]; then
+		archqual="${pkgarchqual##*:}"
 	fi
 
-	if [ "${_obpd_dep# (*)}" != "${_obpd_dep}" ]; then
-		_obpd_relver="${_obpd_dep# (}"
-		_obpd_relver="${_obpd_relver%%)*}"
-		_obpd_dep="${_obpd_dep# (*)}"
-		_obpd_rel="${_obpd_relver% *}"
-		_obpd_ver="${_obpd_relver##* }"
+	if [ "${dep# (*)}" != "${dep}" ]; then
+		relver="${dep# (}"
+		relver="${relver%%)*}"
+		dep="${dep# (*)}"
+		rel="${relver% *}"
+		ver="${relver##* }"
 	fi
 
-	if [ "${_obpd_dep# \[*\]}" != "${_obpd_dep}" ]; then
-		_obpd_arches="${_obpd_dep# \[}"
-		_obpd_arches="${_obpd_arches%%\]*}"
-		_obpd_dep="${_obpd_dep# \[*\]}"
+	if [ "${dep# \[*\]}" != "${dep}" ]; then
+		arches="${dep# \[}"
+		arches="${arches%%\]*}"
+		dep="${dep# \[*\]}"
 	fi
 
-	if [ "${_obpd_dep# <*>}" != "${_obpd_dep}" ]; then
-		_obpd_plats="${_obpd_dep# <}"
-		_obpd_plats="${_obpd_plats%%>*}"
-		_obpd_dep="${_obpd_dep# <*>}"
+	if [ "${dep# <*>}" != "${dep}" ]; then
+		plats="${dep# <}"
+		plats="${plats%%>*}"
+		dep="${dep# <*>}"
 	fi
 
 	# Set the specified variables.
-	for _obpd_comp in pkg archqual rel ver arches plats; do
-		_obpd_comp_var="$(eval echo \"\$\{_obpd_${_obpd_comp}_var\}\")"
-		[ -z "${_obpd_comp_var}" ] && continue
-		eval ${_obpd_comp_var}=\"\$\{_obpd_${_obpd_comp}\}\"
+	for comp in pkg archqual rel ver arches plats; do
+		comp_var="$(eval echo \"\$\{${comp}_var\}\")"
+		[ -z "${comp_var}" ] && continue
+		eval ${comp_var}=\"\$\{${comp}\}\"
 	done
 
-	if [ -n "${_obpd_host_arch}" ] && ! ob_arch_is_concerned \
-			"${_obpd_host_arch}" "${_obpd_arches}"; then
-		_ob_return 0
-		return ${?}
+	if [ -n "${host_arch}" ] && ! ob_arch_is_concerned \
+			"${host_arch}" "${arches}"; then
+		return 0
 	fi
-	if [ -n "${_obpd_host_plat}" ] && ! ob_plat_is_concerned \
-			"${_obpd_host_plat}" "${_obpd_plats}"; then
-		_ob_return 0
-		return ${?}
+	if [ -n "${host_plat}" ] && ! ob_plat_is_concerned \
+			"${host_plat}" "${plats}"; then
+		return 0
 	fi
 
-	printf '%s' "${_obpd_pkg}"
-	[ -n "${_obpd_archqual}" ] && printf ':%s' "${_obpd_archqual}"
-	[ -n "${_obpd_ver}" ] && printf ' (%s %s)' "${_obpd_rel}" "${_obpd_ver}"
-	[ -z "${_obpd_host_arch}" -a -n "${_obpd_arches}" ] && \
-		printf ' [%s]' "${_obpd_arches}"
-	[ -z "${_obpd_host_plat}" -a -n "${_obpd_plats}" ] && \
-		printf ' [%s]' "${_obpd_plats}"
+	printf '%s' "${pkg}"
+	[ -n "${archqual}" ] && printf ':%s' "${archqual}"
+	[ -n "${ver}" ] && printf ' (%s %s)' "${rel}" "${ver}"
+	[ -z "${host_arch}" -a -n "${arches}" ] && \
+		printf ' [%s]' "${arches}"
+	[ -z "${host_plat}" -a -n "${plats}" ] && \
+		printf ' [%s]' "${plats}"
 	printf '\n'
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_reduce_deps()
 {
-	_ob_local _obrd_opt _obrd_host_arch _obrd_host_plat _obrd_deps \
-		_obrd_dep_and _obrd_dep_or _obrd_dep_list _obrd_dep_or_list _obrd_dep
-
-	_obrd_union='false'
-
-	while getopts 'a:P:u' _obrd_opt; do
-		case "${_obrd_opt}" in
+	local opt=
+	local host_arch=
+	local host_plat=
+	local deps=
+	local dep_and=
+	local dep_or=
+	local dep_list=
+	local dep_or_list=
+	local dep=
+
+	union='false'
+
+	while getopts 'a:P:u' opt; do
+		case "${opt}" in
 			a)
-				_obrd_host_arch="${OPTARG}"
+				host_arch="${OPTARG}"
 				;;
 			P)
-				_obrd_host_plat="${OPTARG}"
+				host_plat="${OPTARG}"
 				;;
 			u)
-				_obrd_union='true'
+				union='true'
 				;;
 			?)
-				_ob_return 125
-				return ${?}
+				return 125
 				;;
 		esac
 	done
 	shift $(($OPTIND - 1))
 
 	if [ ${#} -eq 1 ]; then
-		_obrd_deps="${1}"
+		deps="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	IFS=','
-	for _obrd_dep_and in ${_obrd_deps}; do
+	for dep_and in ${deps}; do
 		unset IFS
-		if ! ${_obrd_union}; then
+		if ! ${union}; then
 			IFS='|'
-			_obrd_dep_or_list=
-			for _obrd_dep_or in ${_obrd_dep_and}; do
+			dep_or_list=
+			for dep_or in ${dep_and}; do
 				unset IFS
-				_obrd_dep="$(ob_parse_dep -a "${_obrd_host_arch}" \
-					-P "${_obrd_host_plat}" "${_obrd_dep_or}")"
-				if [ -n "${_obrd_dep}" ]; then
-					if [ -n "${_obrd_dep_or_list}" ]; then
-						_obrd_dep_or_list="${_obrd_dep_or_list} | "
+				dep="$(ob_parse_dep -a "${host_arch}" \
+					-P "${host_plat}" "${dep_or}")"
+				if [ -n "${dep}" ]; then
+					if [ -n "${dep_or_list}" ]; then
+						dep_or_list="${dep_or_list} | "
 					fi
-					_obrd_dep_or_list="${_obrd_dep_or_list}${_obrd_dep}"
+					dep_or_list="${dep_or_list}${dep}"
 				fi
 			done
-			if [ -n "${_obrd_dep_or_list}" ]; then
-				if [ -n "${_obrd_dep_list}" ]; then
-					_obrd_dep_list="${_obrd_dep_list}, "
+			if [ -n "${dep_or_list}" ]; then
+				if [ -n "${dep_list}" ]; then
+					dep_list="${dep_list}, "
 				fi
-				_obrd_dep_list="${_obrd_dep_list}${_obrd_dep_or_list}"
+				dep_list="${dep_list}${dep_or_list}"
 			fi
 		else
-			_obrd_dep="$(ob_parse_dep -a "${_obrd_host_arch}" \
-				-P "${_obrd_host_plat}" "${_obrd_dep_and}")"
-			if [ -n "${_obrd_dep}" ]; then
-				if [ -n "${_obrd_dep_list}" ]; then
-					_obrd_dep_list="${_obrd_dep_list}, "
+			dep="$(ob_parse_dep -a "${host_arch}" \
+				-P "${host_plat}" "${dep_and}")"
+			if [ -n "${dep}" ]; then
+				if [ -n "${dep_list}" ]; then
+					dep_list="${dep_list}, "
 				fi
-				_obrd_dep_list="${_obrd_dep_list}${_obrd_dep}"
+				dep_list="${dep_list}${dep}"
 			fi
 		fi
 	done
 	unset IFS
 
-	echo "${_obrd_dep_list}"
+	echo "${dep_list}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
diff --git a/lib/load.sh b/lib/load.sh
index ac38dbc..685f414 100644
--- a/lib/load.sh
+++ b/lib/load.sh
@@ -26,23 +26,20 @@ _OB_LOAD_SM='true'
 
 ob_use()
 {
-	_ob_local _obu_module
+	local module
 
 	if [ ${#} -eq 1 ]; then
-		_obu_module="${1}"
+		module="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_obu_module='@@PKGLIBDIR@@'"/${_obu_module}.sm"
-	if [ -r "${_obu_module}" ]; then
-		. "${_obu_module}"
+	module='@@PKGLIBDIR@@'"/${module}.sm"
+	if [ -r "${module}" ]; then
+		. "${module}"
 	else
-		_ob_return 1
-		return ${?}
+		return 1
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
diff --git a/lib/locale.sh b/lib/locale.sh
index 1cb1111..4d519a3 100644
--- a/lib/locale.sh
+++ b/lib/locale.sh
@@ -29,27 +29,20 @@ _OB_LOCALE_PATH='@@LOCALEDIR@@/%s/LC_MESSAGES/%s.ms'
 
 ob_get_text_domain()
 {
-	_ob_local
-
 	if [ ${#} -ne 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	echo "${_OB_TEXT_DOMAIN}"
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_set_text_domain()
 {
-	_ob_local
-
 	if [ ${#} -eq 1 ]; then
 		_OB_TEXT_DOMAIN="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# Make sure LC_MESSAGES is set.
@@ -71,65 +64,58 @@ ob_set_text_domain()
 			if ! _ob_try_load_messages "${_OB_DEFAULT_LOCALE}"; then
 				ob_warn 'Cannot load messages in "%s" domain.' \
 					"${_OB_TEXT_DOMAIN}"
-				_ob_return 1
-				return ${?}
+				return 1
 			fi
 		fi
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_set_locale_path()
 {
-	_ob_local _obslp_format
+	local format=
 
 	if [ ${#} -eq 1 ]; then
-		_obslp_format="${1}"
+		format="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_OB_LOCALE_PATH="${_obslp_format}"
+	_OB_LOCALE_PATH="${format}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_get_msg()
 {
-	_ob_local _obgm_msgid
+	local msgid=
 
 	if [ ${#} -eq 1 ]; then
-		_obgm_msgid="${1}"
+		msgid="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	IFS= eval echo \$\{"msg_${_OB_TEXT_DOMAIN}_${_obgm_msgid}"\}
+	IFS= eval echo \$\{"msg_${_OB_TEXT_DOMAIN}_${msgid}"\}
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_try_load_messages()
 {
-	_ob_local _obtlm_locale _obtlm_ms
+	local locale=
+	local ms=
 
-	_obtlm_locale="${1}"
-	_obtlm_ms="$(printf "${_OB_LOCALE_PATH}" \
-		"${_obtlm_locale}" "${_OB_TEXT_DOMAIN}")"
+	locale="${1}"
+	ms="$(printf "${_OB_LOCALE_PATH}" \
+		"${locale}" "${_OB_TEXT_DOMAIN}")"
 
-	if [ -f "${_obtlm_ms}" ]; then
-		. "${_obtlm_ms}"
+	if [ -f "${ms}" ]; then
+		. "${ms}"
 	else
-		_ob_return 1
-		return ${?}
+		return 1
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
diff --git a/lib/metadata.sh b/lib/metadata.sh
index c2ad84a..e25abd5 100644
--- a/lib/metadata.sh
+++ b/lib/metadata.sh
@@ -24,301 +24,280 @@ ob_use 'metadata/@@METADATA@@'
 
 ob_validate_source_name()
 {
-	_ob_local _obvsn_name
+	local name=
 
 	if [ ${#} -eq 1 ]; then
-		_obvsn_name="${1}"
+		name="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_ob_metadata_do 'validate_source_name' "${_obvsn_name}"
+	_ob_metadata_do 'validate_source_name' "${name}"
 
-	_ob_return ${?}
 	return ${?}
 }
 
 ob_validate_binary_name()
 {
-	_ob_local _obvbn_name
+	local name=
 
 	if [ ${#} -eq 1 ]; then
-		_obvbn_name="${1}"
+		name="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_ob_metadata_do 'validate_binary_name' "${_obvbn_name}"
+	_ob_metadata_do 'validate_binary_name' "${name}"
 
-	_ob_return ${?}
 	return ${?}
 }
 
 ob_parse_version()
 {
-	_ob_local _obpv_opt _obpv_upstreamver_var _obpv_distrev_var _obpv_version
+	local opt=
+	local upstreamver_var=
+	local distrev_var=
+	local version=
 
-	while getopts 'u:d:' _obpv_opt; do
-		case "${_obpv_opt}" in
+	while getopts 'u:d:' opt; do
+		case "${opt}" in
 			u)
-				_obpv_upstreamver_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpv_upstreamver_var}"; then
-					_ob_return 125
-					return ${?}
+				upstreamver_var="${OPTARG}"
+				if ! _ob_validate_var_name "${upstreamver_var}"; then
+					return 125
 				fi
 				;;
 			d)
-				_obpv_distrev_var="${OPTARG}"
-				if ! _ob_validate_var_name "${_obpv_distrev_var}"; then
-					_ob_return 125
-					return ${?}
+				distrev_var="${OPTARG}"
+				if ! _ob_validate_var_name "${distrev_var}"; then
+					return 125
 				fi
 				;;
 			?)
-				_ob_return 125
-				return ${?}
+				return 125
 				;;
 		esac
 	done
 	shift $(($OPTIND - 1))
 
 	if [ ${#} -eq 1 ]; then
-		_obpv_version="${1}"
+		version="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	if ! _ob_metadata_do 'validate_version' "${_obpv_version}"; then
-		_ob_return 1
-		return ${?}
+	if ! _ob_metadata_do 'validate_version' "${version}"; then
+		return 1
 	fi
 
-	if [ -n "${_obpv_upstreamver_var}" ]; then
-		eval ${_obpv_upstreamver_var}="$(_ob_metadata_do 'get_upstreamver' \
-			"${_obpv_version}")"
+	if [ -n "${upstreamver_var}" ]; then
+		eval ${upstreamver_var}="$(_ob_metadata_do 'get_upstreamver' \
+			"${version}")"
 	fi
-	if [ -n "${_obpv_distrev_var}" ]; then
-		eval ${_obpv_distrev_var}="$(_ob_metadata_do 'get_distrev' \
-			"${_obpv_version}")"
+	if [ -n "${distrev_var}" ]; then
+		eval ${distrev_var}="$(_ob_metadata_do 'get_distrev' \
+			"${version}")"
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_get_system_arch()
 {
-	_ob_local
-
 	if [ ${#} -gt 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	_ob_metadata_do 'get_system_arch'
 
-	_ob_return ${?}
 	return ${?}
 }
 
 ob_get_system_plat()
 {
-	_ob_local
-
 	if [ ${#} -gt 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	_ob_metadata_do 'get_system_plat'
 
-	_ob_return ${?}
 	return ${?}
 }
 
 ob_match_arch()
 {
-	_ob_local _obma_arch _obma_arch_field _obma_a \
-		_obma_a_pat_norm _obma_a_pat_hyph
+	local arch=
+	local arch_field=
+	local a=
+	local a_ere=
 
 	if [ ${#} -eq 2 ]; then
-		_obma_arch="${1}"
-		_obma_arch_field="${2}"
+		arch="${1}"
+		arch_field="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	for _obma_a in ${_obma_arch_field}; do
+	for a in ${arch_field}; do
 
 		# "all" == "all"
-		if [ "${_obma_arch}" = 'all' ]; then
-			if [ "${_obma_a}" = 'all' ]; then
-				_ob_return 0
-				return ${?}
+		if [ "${arch}" = 'all' ]; then
+			if [ "${a}" = 'all' ]; then
+				return 0
 			else
 				continue
 			fi
 		fi
 
 		# "foo-bar-baz" == "any"
-		if [ "${_obma_a}" = 'any' ]; then
-			_ob_return 0
-			return ${?}
+		if [ "${a}" = 'any' ]; then
+			return 0
 		fi
 
 		# Generate an ERE to match hyphenated architectures.
-		_obma_a_ere="$(echo "${_obma_a}" | \
+		a_ere="$(echo "${a}" | \
 			sed 's/^any-/[^-]+-/;s/-any-/-[^-]+-/g;s/-any$/-[^-]+/g')"
 
 		# "foo-bar-baz" == "foo-any-any"
-		if echo "${_obma_arch}" | grep -E "${_obma_a_ere}" >/dev/null 2>&1; then
-			_ob_return 0
-			return ${?}
+		if echo "${arch}" | grep -E "${a_ere}" >/dev/null 2>&1; then
+			return 0
 		fi
 
 	done
 
 	# Nothing matched.
-	_ob_return 1
-	return ${?}
+	return 1
 }
 
 ob_match_plat()
 {
-	_ob_local _obmp_plat _obmp_plat_field _obmp_p
+	local plat=
+	local plat_field=
+	local p=
 
 	if [ ${#} -eq 2 ]; then
-		_obmp_plat="${1}"
-		_obmp_plat_field="${2}"
+		plat="${1}"
+		plat_field="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	for _obmp_p in ${_obmp_plat_field}; do
-		if [ "${_obmp_plat}" = 'all' ]; then
-			if [ "${_obmp_p}" = 'all' ]; then
-				_ob_return 0
-				return ${?}
+	for p in ${plat_field}; do
+		if [ "${plat}" = 'all' ]; then
+			if [ "${p}" = 'all' ]; then
+				return 0
 			else
 				continue
 			fi
 		fi
-		if [ "${_obmp_p}" = 'any' ]; then
-			_ob_return 0
-			return ${?}
+		if [ "${p}" = 'any' ]; then
+			return 0
 		fi
 	done
 
-	_ob_return 1
-	return ${?}
+	return 1
 }
 
 ob_arch_is_concerned()
 {
-	_ob_local _obaic_host_arch _obaic_arches \
-		_obaic_arch _obaic_not_arch _obaic_seen_arch
+	local host_arch=
+	local arches=
+	local arch=
+	local not_arch=
+	local seen_arch=
 
 	if [ ${#} -eq 2 ]; then
-		_obaic_host_arch="${1}"
-		_obaic_arches="${2}"
+		host_arch="${1}"
+		arches="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_obaic_seen_arch=1
-	if [ -z "${_obaic_arches}" ]; then
-		_obaic_seen_arch=0
+	seen_arch=1
+	if [ -z "${arches}" ]; then
+		seen_arch=0
 	fi
 
-	for _obaic_arch in ${_obaic_arches}; do
-		_obaic_not_arch="${_obaic_arch#!}"
-		if [ "${_obaic_not_arch}" != "${_obaic_arch}" ]; then
-			if ob_match_arch "${_obaic_host_arch}" "${_obaic_not_arch}"; then
-				_obaic_seen_arch=1
+	for arch in ${arches}; do
+		not_arch="${arch#!}"
+		if [ "${not_arch}" != "${arch}" ]; then
+			if ob_match_arch "${host_arch}" "${not_arch}"; then
+				seen_arch=1
 				break
 			else
-				_obaic_seen_arch=0
+				seen_arch=0
 			fi
-		elif ob_match_arch "${_obaic_host_arch}" "${_obaic_arch}"; then
-			_obaic_seen_arch=0
+		elif ob_match_arch "${host_arch}" "${arch}"; then
+			seen_arch=0
 			break
 		fi
 	done
 
-	_ob_return ${_obaic_seen_arch}
-	return ${?}
+	return ${seen_arch}
 }
 
 ob_plat_is_concerned()
 {
-	_ob_local _obpic_host_plat _obpic_plats \
-		_obpic_plat _obpic_not_plat _obpic_seen_plat
+	local host_plat=
+	local plats=
+	local plat=
+	local not_plat=
+	local seen_plat=
 
 	if [ ${#} -eq 2 ]; then
-		_obpic_host_plat="${1}"
-		_obpic_plats="${2}"
+		host_plat="${1}"
+		plats="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_obpic_seen_plat=1
-	if [ -z "${_obpic_plats}" ]; then
-		_obpic_seen_plat=0
+	seen_plat=1
+	if [ -z "${plats}" ]; then
+		seen_plat=0
 	fi
 
-	for _obpic_plat in ${_obpic_plats}; do
-		_obpic_not_plat="${_obpic_plat#!}"
-		if [ "${_obpic_not_plat}" != "${_obpic_plat}" ]; then
-			if ob_match_plat "${_obpic_host_plat}" "${_obpic_not_plat}"; then
-				_obpic_seen_plat=1
+	for plat in ${plats}; do
+		not_plat="${plat#!}"
+		if [ "${not_plat}" != "${plat}" ]; then
+			if ob_match_plat "${host_plat}" "${not_plat}"; then
+				seen_plat=1
 				break
 			else
-				_obpic_seen_plat=0
+				seen_plat=0
 			fi
-		elif ob_match_plat "${_obpic_host_plat}" "${_obpic_plat}"; then
-			_obpic_seen_plat=0
+		elif ob_match_plat "${host_plat}" "${plat}"; then
+			seen_plat=0
 			break
 		fi
 	done
 
-	_ob_return ${_obpic_seen_plat}
-	return ${?}
+	return ${seen_plat}
 }
 
 ob_get_system_path()
 {
-	_ob_local _obgsp_path_id
+	local path_id=
 
 	if [ ${#} -ge 1 ]; then
-		_obgsp_path_id="${1}"
+		path_id="${1}"
 		shift 1
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_ob_metadata_do 'get_system_path' "${_obgsp_path_id}" "${@}"
+	_ob_metadata_do 'get_system_path' "${path_id}" "${@}"
 
-	_ob_return ${?}
 	return ${?}
 }
 
 _ob_metadata_do()
 {
-	_ob_local _obmd_func
+	local func=
 
-	_obmd_func="${1}"
+	func="${1}"
 	shift 1
 
-	"_ob_${_obmd_func}_@@METADATA@@" "${@}"
+	"_ob_${func}_@@METADATA@@" "${@}"
 
-	_ob_return ${?}
 	return ${?}
 }
diff --git a/lib/metadata/proteanos.sh b/lib/metadata/proteanos.sh
index c5774a5..493f30a 100644
--- a/lib/metadata/proteanos.sh
+++ b/lib/metadata/proteanos.sh
@@ -30,122 +30,107 @@ _OB_VERSION_RE_PROTEANOS=${_OB_VERSION_RE_PROTEANOS}'$'
 
 _ob_validate_source_name_proteanos()
 {
-	_ob_local _obvsnpro_name
+	local name=
 
-	_obvsnpro_name="${1}"
+	name="${1}"
 
-	if echo "${_obvsnpro_name}" | grep -E "${_OB_NAME_RE_PROTEANOS}" \
+	if echo "${name}" | grep -E "${_OB_NAME_RE_PROTEANOS}" \
 			>/dev/null 2>&1; then
-		case "${_obvsnpro_name}" in
+		case "${name}" in
 			src-*)
-				_ob_return 1
-				return ${?}
+				return 1
 				;;
 		esac
 	else
-		_ob_return 1
-		return ${?}
+		return 1
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_validate_binary_name_proteanos()
 {
-	_ob_local _obvbnpro_name
+	local name=
 
-	_obvbnpro_name="${1}"
+	name="${1}"
 
-	if echo "${_obvbnpro_name}" | grep -E "${_OB_NAME_RE_PROTEANOS}" \
+	if echo "${name}" | grep -E "${_OB_NAME_RE_PROTEANOS}" \
 			>/dev/null 2>&1; then
-		case "${_obvbnpro_name}" in
+		case "${name}" in
 			src-*)
-				_ob_return 1
-				return ${?}
+				return 1
 				;;
 		esac
 	else
-		_ob_return 1
-		return ${?}
+		return 1
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_validate_version_proteanos()
 {
-	_ob_local _obvvpro_version
+	local version=
 
-	_obvvpro_version="${1}"
+	version="${1}"
 
-	echo "${_obvvpro_version}" | grep -E "${_OB_VERSION_RE_PROTEANOS}" \
+	echo "${version}" | grep -E "${_OB_VERSION_RE_PROTEANOS}" \
 		>/dev/null 2>&1
 
-	_ob_return ${?}
 	return ${?}
 }
 
 _ob_get_upstreamver_proteanos()
 {
-	_ob_local _obguvpro_version
+	local version=
 
-	_obguvpro_version="${1}"
+	version="${1}"
 
-	echo "${_obguvpro_version%-*}"
+	echo "${version%-*}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_distrev_proteanos()
 {
-	_ob_local _obgdrpro_version
+	local version=
 
-	_obgdrpro_version="${1}"
+	version="${1}"
 
-	echo "${_obgdrpro_version##*-}"
+	echo "${version##*-}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_system_arch_proteanos()
 {
-	_ob_local
-
 	cat '@@SYSCONFDIR@@/proteanos_arch'
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_system_plat_proteanos()
 {
-	_ob_local
-
 	cat '@@SYSCONFDIR@@/proteanos_plat'
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_system_path_proteanos()
 {
-	_ob_local _obgsppro_path_id _obgsppro_pkgver
+	local path_id=
+	local pkgver=
 
-	_obgsppro_path_id="${1}"
+	path_id="${1}"
 	shift 1
 
-	case "${_obgsppro_path_id}" in
+	case "${path_id}" in
 		'package-source')
 			# source version
 			if [ ${#} -eq 2 ]; then
 				printf '/usr/src/%s_%s' "${1}" "${2}"
 			else
-				_ob_return 125
-				return ${?}
+				return 125
 			fi
 			;;
 		'package-docs')
@@ -153,8 +138,7 @@ _ob_get_system_path_proteanos()
 			if [ ${#} -eq 2 ]; then
 				printf '/usr/share/doc/%s' "${1}"
 			else
-				_ob_return 125
-				return ${?}
+				return 125
 			fi
 			;;
 		'buildflags')
@@ -162,20 +146,18 @@ _ob_get_system_path_proteanos()
 			if [ ${#} -eq 1 ]; then
 				printf '@@DATADIR@@/opkbuild/buildflags/%s' "${1}"
 			else
-				_ob_return 125
-				return ${?}
+				return 125
 			fi
 			;;
 		'platconf')
 			# source version plat
 			if [ ${#} -eq 3 ]; then
-				ob_parse_version -u '_obgsppro_pkgver' "${2}"
+				ob_parse_version -u 'pkgver' "${2}"
 				printf '@@DATADIR@@/platconf/%s/%s\n' "${3}" "${1}"
 				printf '@@DATADIR@@/platconf/%s/%s_%s\n' "${3}" "${1}" \
-					"${_obgsppro_pkgver}"
+					"${pkgver}"
 			else
-				_ob_return 125
-				return ${?}
+				return 125
 			fi
 			;;
 		'build-helper')
@@ -186,17 +168,14 @@ _ob_get_system_path_proteanos()
 						printf '%s' '@@OPKHELPER_3_0@@'
 						;;
 					*)
-						_ob_return 1
-						return ${?}
+						return 1
 						;;
 				esac
 			else
-				_ob_return 125
-				return ${?}
+				return 125
 			fi
 			;;
 	esac
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
diff --git a/lib/package.sh b/lib/package.sh
index 4b5ce6a..4d040ab 100644
--- a/lib/package.sh
+++ b/lib/package.sh
@@ -30,16 +30,16 @@ _OB_BINARY_PARAMETERS=
 
 ob_init_package()
 {
-	_ob_local _obip_dir _obip_orig_text_domain
+	local dir=
+	local orig_text_domain=
 
 	if [ ${#} -eq 1 ]; then
-		_obip_dir="${1}"
+		dir="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_OB_PACKAGE_DIR="$(cd "${_obip_dir}" && pwd)"
+	_OB_PACKAGE_DIR="$(cd "${dir}" && pwd)"
 
 	if [ -r "${_OB_PACKAGE_DIR}/format" ]; then
 		case "$(cat "${_OB_PACKAGE_DIR}/format")" in
@@ -50,110 +50,111 @@ ob_init_package()
 	fi
 
 	if [ -z "${_OB_PACKAGE_FORMAT}" ]; then
-		_obip_orig_text_domain="$(ob_get_text_domain)"
+		orig_text_domain="$(ob_get_text_domain)"
 		ob_set_text_domain "${_OB_INTERNAL_TEXT_DOMAIN}"
 		ob_warn "$(ob_get_msg 'unable_to_detect_package_format')"
-		ob_set_text_domain "${_obip_orig_text_domain}"
-		_ob_return 1
-		return ${?}
+		ob_set_text_domain "${orig_text_domain}"
+		return 1
 	fi
 
 	ob_use "package/${_OB_PACKAGE_FORMAT}"
 
 	_OB_BINARY_PACKAGES=
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_parse_package_metadata()
 {
-	_ob_local _obppm_opt _obppm_cache_file _obppm_pkg _obppm_pkg_clean \
-		_obppm_param_name _obppm_param_value
-
-	while getopts 'c:' _obppm_opt; do
-		case "${_obppm_opt}" in
+	local opt=
+	local cache_file=
+	local pkg=
+	local pkg_clean=
+	local param_name=
+	local param_value=
+
+	while getopts 'c:' opt; do
+		case "${opt}" in
 			c)
-				_obppm_cache_file="${OPTARG}"
+				cache_file="${OPTARG}"
 				;;
 			?)
-				_ob_return 125
-				return ${?}
+				return 125
 				;;
 		esac
 	done
 	shift $(($OPTIND - 1))
 
 	if [ ${#} -gt 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# Load a previously saved cache file, if any.
-	if [ -n "${_obppm_cache_file}" -a -r "${_obppm_cache_file}" ]; then
-		if [ "${_obppm_cache_file#*/}" != "${_obppm_cache_file}" ]; then
-			. "${_obppm_cache_file}"
+	if [ -n "${cache_file}" -a -r "${cache_file}" ]; then
+		if [ "${cache_file#*/}" != "${cache_file}" ]; then
+			. "${cache_file}"
 		else
-			. "./${_obppm_cache_file}"
+			. "./${cache_file}"
 		fi
-		_ob_return 0
-		return ${?}
+		return 0
 	fi
 
 	_ob_package_do 'parse_package_metadata'
 
-	if [ -n "${_obppm_cache_file}" ]; then
-		>"${_obppm_cache_file}"
-		for _obppm_param_name in ${_OB_SOURCE_PARAMETERS}; do
-			_obppm_param_value="$(ob_get_source_parameter \
-				"${_obppm_param_name}" | sed "s/'/'\\\\''/g")"
+	if [ -n "${cache_file}" ]; then
+		>"${cache_file}"
+		for param_name in ${_OB_SOURCE_PARAMETERS}; do
+			param_value="$(ob_get_source_parameter \
+				"${param_name}" | sed "s/'/'\\\\''/g")"
 			printf "%s='%s'\n" \
-				"_OB_SRCFIELD_${_obppm_param_name}" "${_obppm_param_value}" \
-				>>"${_obppm_cache_file}"
+				"_OB_SRCFIELD_${param_name}" "${param_value}" \
+				>>"${cache_file}"
 		done
-		for _obppm_pkg in $(ob_get_binary_packages); do
-			_obppm_pkg_clean="$(echo "${_obppm_pkg}" | tr 'a-z' 'A-Z' | \
+		for pkg in $(ob_get_binary_packages); do
+			pkg_clean="$(echo "${pkg}" | tr 'a-z' 'A-Z' | \
 				tr -dC 'A-Z0-9')"
-			for _obppm_param_name in ${_OB_BINARY_PARAMETERS}; do
-				_obppm_param_value="$(ob_get_binary_parameter "${_obppm_pkg}" \
-					"${_obppm_param_name}" | sed "s/'/'\\\\''/g")"
+			for param_name in ${_OB_BINARY_PARAMETERS}; do
+				param_value="$(ob_get_binary_parameter "${pkg}" \
+					"${param_name}" | sed "s/'/'\\\\''/g")"
 				printf "%s='%s'\n" \
-					"_OB_BINFIELD_${_obppm_pkg_clean}_${_obppm_param_name}" \
-					"${_obppm_param_value}" \
-					>>"${_obppm_cache_file}"
+					"_OB_BINFIELD_${pkg_clean}_${param_name}" \
+					"${param_value}" \
+					>>"${cache_file}"
 			done
 		done
 	fi
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_get_binary_packages()
 {
-	_ob_local _obgbpk_opt _obgbpk_host_arch _obgbpk_host_plat \
-		_obgbpk_pkgs _obgbpk_pkg \
-		_obgbpk_pkgs_clean _obgbpk_pkg_clean _obgbpk_orig_text_domain
-
-	while getopts 'a:P:' _obgbpk_opt; do
-		case "${_obgbpk_opt}" in
+	local opt=
+	local host_arch=
+	local host_plat=
+	local pkgs=
+	local pkg=
+	local pkgs_clean=
+	local pkg_clean=
+	local orig_text_domain=
+
+	while getopts 'a:P:' opt; do
+		case "${opt}" in
 			a)
-				_obgbpk_host_arch="${OPTARG}"
+				host_arch="${OPTARG}"
 				;;
 			P)
-				_obgbpk_host_plat="${OPTARG}"
+				host_plat="${OPTARG}"
 				;;
 			?)
-				_ob_return 125
-				return ${?}
+				return 125
 				;;
 		esac
 	done
 	shift $(($OPTIND - 1))
 
 	if [ ${#} -gt 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# NB: If a source package lists no binary packages, this will be true each
@@ -162,293 +163,267 @@ ob_get_binary_packages()
 
 		_ob_package_do 'get_binary_packages'
 
-		_obgbpk_orig_text_domain="$(ob_get_text_domain)"
+		orig_text_domain="$(ob_get_text_domain)"
 		ob_set_text_domain "${_OB_INTERNAL_TEXT_DOMAIN}"
 
-		_obgbpk_pkgs_clean=' '
+		pkgs_clean=' '
 
-		for _obgbpk_pkg in ${_OB_BINARY_PACKAGES}; do
+		for pkg in ${_OB_BINARY_PACKAGES}; do
 
 			# Validate the name.
-			if ! ob_validate_binary_name "${_obgbpk_pkg}"; then
-				ob_warn "$(ob_get_msg 'bad_binary_name')" "${_obgbpk_pkg}"
+			if ! ob_validate_binary_name "${pkg}"; then
+				ob_warn "$(ob_get_msg 'bad_binary_name')" "${pkg}"
 				continue
 			fi
 
 			# Make sure the "clean" name is unique.
-			_obgbpk_pkg_clean=" $(echo "${_obgbpk_pkg}" | tr 'a-z' 'A-Z' | \
+			pkg_clean=" $(echo "${pkg}" | tr 'a-z' 'A-Z' | \
 				tr -dC 'A-Z0-9') "
-			if echo "${_obgbpk_pkgs_clean}" | grep "${_obgbpk_pkg_clean}" \
+			if echo "${pkgs_clean}" | grep "${pkg_clean}" \
 					>/dev/null 2>&1; then
 			ob_warn "$(ob_get_msg 'duplicate_clean_binary_name')" \
-				"${_obgbpk_pkg_clean}"
+				"${pkg_clean}"
 				continue
 			else
-				_obgbpk_pkgs_clean="${_obgbpk_pkgs_clean}${_obgbpk_pkg_clean} "
+				pkgs_clean="${pkgs_clean}${pkg_clean} "
 			fi
 
-			_obgbpk_pkgs="${_obgbpk_pkgs} ${_obgbpk_pkg}"
+			pkgs="${pkgs} ${pkg}"
 
 		done
 
-		_OB_BINARY_PACKAGES="$(IFS=' ' echo ${_obgbpk_pkgs})"
+		_OB_BINARY_PACKAGES="$(IFS=' ' echo ${pkgs})"
 
-		ob_set_text_domain "${_obgbpk_orig_text_domain}"
+		ob_set_text_domain "${orig_text_domain}"
 
 	fi
 
-	_obgbpk_pkgs=''
+	pkgs=''
 
-	for _obgbpk_pkg in ${_OB_BINARY_PACKAGES}; do
-		if [ -n "${_obgbpk_host_arch}" ] && ! ob_arch_is_concerned \
-				"${_obgbpk_host_arch}" "$(ob_get_binary_parameter \
-				"${_obgbpk_pkg}" 'Architecture')"; then
+	for pkg in ${_OB_BINARY_PACKAGES}; do
+		if [ -n "${host_arch}" ] && ! ob_arch_is_concerned \
+				"${host_arch}" "$(ob_get_binary_parameter \
+				"${pkg}" 'Architecture')"; then
 			continue
 		fi
-		if [ -n "${_obgbpk_host_plat}" ] && ! ob_plat_is_concerned \
-				"${_obgbpk_host_plat}" "$(ob_get_binary_parameter \
-				"${_obgbpk_pkg}" 'Platform')"; then
+		if [ -n "${host_plat}" ] && ! ob_plat_is_concerned \
+				"${host_plat}" "$(ob_get_binary_parameter \
+				"${pkg}" 'Platform')"; then
 			continue
 		fi
-		_obgbpk_pkgs="${_obgbpk_pkgs} ${_obgbpk_pkg}"
+		pkgs="${pkgs} ${pkg}"
 	done
 
-	IFS=' ' echo ${_obgbpk_pkgs}
+	IFS=' ' echo ${pkgs}
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_get_source_parameter()
 {
-	_ob_local _obgsp_name
+	local name=
 
 	if [ ${#} -eq 1 ]; then
-		_obgsp_name="${1}"
+		name="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# Convert field name to uppercase and validate.
-	_obgsp_name="$(echo "${_obgsp_name}" | tr 'a-z-' 'A-Z_')"
-	case "${_obgsp_name:- }" in
+	name="$(echo "${name}" | tr 'a-z-' 'A-Z_')"
+	case "${name:- }" in
 		*[!A-Z0-9_]*)
-			_ob_return 125
-			return ${?}
+			return 125
 			;;
 	esac
 
-	eval echo \"\$\{"_OB_SRCFIELD_${_obgsp_name}"\}\"
+	eval echo \"\$\{"_OB_SRCFIELD_${name}"\}\"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_get_binary_parameter()
 {
-	_ob_local _obgbp_package _obgbp_name
+	local package=
+	local name=
 
 	if [ ${#} -eq 2 ]; then
-		_obgbp_package="${1}"
-		_obgbp_name="${2}"
+		package="${1}"
+		name="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	if ! ob_validate_binary_name "${_obgbp_package}"; then
-		_ob_return 125
-		return ${?}
+	if ! ob_validate_binary_name "${package}"; then
+		return 125
 	fi
 
 	# Convert package name to its uppercase "clean" form.
-	_obgbp_package="$(echo "${_obgbp_package}" | tr 'a-z' 'A-Z' | \
+	package="$(echo "${package}" | tr 'a-z' 'A-Z' | \
 		tr -dC 'A-Z0-9')"
 
 	# Convert field name to uppercase and validate.
-	_obgbp_name="$(echo "${_obgbp_name}" | tr 'a-z-' 'A-Z_')"
-	case "${_obgbp_name:- }" in
+	name="$(echo "${name}" | tr 'a-z-' 'A-Z_')"
+	case "${name:- }" in
 		*[!A-Z0-9_]*)
-			_ob_return 125
-			return ${?}
+			return 125
 			;;
 	esac
 
-	eval echo \"\$\{"_OB_BINFIELD_${_obgbp_package}_${_obgbp_name}"\}\"
+	eval echo \"\$\{"_OB_BINFIELD_${package}_${name}"\}\"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_get_doc_package()
 {
-	_ob_local
-
 	if [ ${#} -gt 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	_ob_package_do 'get_doc_package'
 
-	_ob_return ${?}
 	return ${?}
 }
 
 ob_get_doc_files()
 {
-	_ob_local _obgdf_arch _obgdf_plat
+	local arch=
+	local plat=
 
 	if [ ${#} -eq 2 ]; then
-		_obgdf_arch="${1}"
-		_obgdf_plat="${2}"
+		arch="${1}"
+		plat="${2}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_ob_package_do 'get_doc_files' "${_obgdf_arch}" "${_obgdf_plat}"
+	_ob_package_do 'get_doc_files' "${arch}" "${plat}"
 
-	_ob_return ${?}
 	return ${?}
 }
 
 ob_summarize_package_arch()
 {
-	_ob_local
-
 	if [ ${#} -gt 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# XXX: Stub.
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_summarize_package_plat()
 {
-	_ob_local
-
 	if [ ${#} -gt 0 ]; then
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	# XXX: Stub.
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 ob_set_package_substvars()
 {
-	_ob_local _obspsv_pkg
+	local pkg=
 
 	if [ ${#} -eq 1 ]; then
-		_obspsv_pkg="${1}"
+		pkg="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
-	_ob_package_do 'set_package_substvars' "${_obspsv_pkg}"
+	_ob_package_do 'set_package_substvars' "${pkg}"
 
-	_ob_return ${?}
 	return ${?}
 }
 
 _ob_package_do()
 {
-	_ob_local _obpd_func
+	local func=
 
-	_obpd_func="${1}"
+	func="${1}"
 	shift 1
 
-	"_ob_${_obpd_func}_${_OB_PACKAGE_FORMAT}" "${@}"
+	"_ob_${func}_${_OB_PACKAGE_FORMAT}" "${@}"
 
-	_ob_return ${?}
 	return ${?}
 }
 
 _ob_set_binary_packages()
 {
-	_ob_local _obsbpk_packages
+	local packages=
 
-	_obsbpk_packages="${1}"
+	packages="${1}"
 
-	_OB_BINARY_PACKAGES="${_obsbpk_packages}"
+	_OB_BINARY_PACKAGES="${packages}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_set_source_parameter()
 {
-	_ob_local _obssp_name _obssp_value
+	local name=
+	local value=
 
-	_obssp_name="${1}"
-	_obssp_value="${2}"
+	name="${1}"
+	value="${2}"
 
 	# Convert field name to uppercase and validate.
-	_obssp_name="$(echo "${_obssp_name}" | tr 'a-z-' 'A-Z_')"
-	case "${_obssp_name:- }" in
+	name="$(echo "${name}" | tr 'a-z-' 'A-Z_')"
+	case "${name:- }" in
 		*[!A-Z0-9_]*)
-			_ob_return 125
-			return ${?}
+			return 125
 			;;
 	esac
 
-	_OB_SOURCE_PARAMETERS="${_OB_SOURCE_PARAMETERS} ${_obssp_name}"
+	_OB_SOURCE_PARAMETERS="${_OB_SOURCE_PARAMETERS} ${name}"
 
 	# Escape the value.
-	_obssp_value="$(echo "${_obssp_value}" | sed "s/'/'\\\\''/g")"
+	value="$(echo "${value}" | sed "s/'/'\\\\''/g")"
 
-	eval "_OB_SRCFIELD_${_obssp_name}='${_obssp_value}'"
+	eval "_OB_SRCFIELD_${name}='${value}'"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_set_binary_parameter()
 {
-	_ob_local _obsbp_package _obsbp_name _obsbp_value
+	local package=
+	local name=
+	local value=
 
-	_obsbp_package="${1}"
-	_obsbp_name="${2}"
-	_obsbp_value="${3}"
+	package="${1}"
+	name="${2}"
+	value="${3}"
 
-	if ! ob_validate_binary_name "${_obsbp_package}"; then
-		_ob_return 125
-		return ${?}
+	if ! ob_validate_binary_name "${package}"; then
+		return 125
 	fi
 
 	# Convert package name to its uppercase "clean" form.
-	_obsbp_package="$(echo "${_obsbp_package}" | tr 'a-z' 'A-Z' | \
+	package="$(echo "${package}" | tr 'a-z' 'A-Z' | \
 		tr -dC 'A-Z0-9')"
 
 	# Convert field name to uppercase and validate.
-	_obsbp_name="$(echo "${_obsbp_name}" | tr 'a-z-' 'A-Z_')"
-	case "${_obsbp_name:- }" in
+	name="$(echo "${name}" | tr 'a-z-' 'A-Z_')"
+	case "${name:- }" in
 		*[!A-Z0-9_]*)
-			_ob_return 125
-			return ${?}
+			return 125
 			;;
 	esac
 
-	if ! echo " ${_OB_BINARY_PARAMETERS} " | grep " ${_obsbp_name} " \
+	if ! echo " ${_OB_BINARY_PARAMETERS} " | grep " ${name} " \
 			>/dev/null 2>&1; then
-		_OB_BINARY_PARAMETERS="${_OB_BINARY_PARAMETERS} ${_obsbp_name}"
+		_OB_BINARY_PARAMETERS="${_OB_BINARY_PARAMETERS} ${name}"
 	fi
 
 	# Escape the value.
-	_obsbp_value="$(echo "${_obsbp_value}" | sed "s/'/'\\\\''/g")"
+	value="$(echo "${value}" | sed "s/'/'\\\\''/g")"
 
-	eval "_OB_BINFIELD_${_obsbp_package}_${_obsbp_name}='${_obsbp_value}'"
+	eval "_OB_BINFIELD_${package}_${name}='${value}'"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
diff --git a/lib/package/2.sh b/lib/package/2.sh
index b3dfc52..25c4865 100644
--- a/lib/package/2.sh
+++ b/lib/package/2.sh
@@ -32,62 +32,56 @@ _OB_CURRENT_PACKAGE_2=
 
 _ob_parse_package_metadata_2()
 {
-	_ob_local _obppm2_pkg
+	local pkg=
 
 	ob_parse_control "${_OB_PACKAGE_DIR}/control" _ob_srcfield_2 \
 		"${_OB_SOURCE_FIELDS_REQUIRED_2}" "${_OB_SOURCE_FIELDS_OPTIONAL_2}"
 	ob_parse_changelog "${_OB_PACKAGE_DIR}/changelog" _ob_change_2
 
-	for _obppm2_pkg in $(ob_get_binary_packages); do
-		_OB_CURRENT_PACKAGE_2="${_obppm2_pkg}"
-		ob_parse_control "${_OB_PACKAGE_DIR}/${_obppm2_pkg}.pkg/control" \
+	for pkg in $(ob_get_binary_packages); do
+		_OB_CURRENT_PACKAGE_2="${pkg}"
+		ob_parse_control "${_OB_PACKAGE_DIR}/${pkg}.pkg/control" \
 			_ob_binfield_2 \
 			"${_OB_BINARY_FIELDS_REQUIRED_2}" "${_OB_BINARY_FIELDS_OPTIONAL_2}"
 	done
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_binary_packages_2()
 {
-	_ob_local _obgbp2_pkgs _obgbp2_pkg_control
+	local pkgs=
+	local pkg_control=
 
-	for _obgbp2_pkg_control in "${_OB_PACKAGE_DIR}/"*'.pkg/control'; do
+	for pkg_control in "${_OB_PACKAGE_DIR}/"*'.pkg/control'; do
 
-		if [ ! -f "${_obgbp2_pkg_control}" ]; then
+		if [ ! -f "${pkg_control}" ]; then
 			continue
 		fi
 
-		_obgbp2_pkg_control="${_obgbp2_pkg_control%.pkg/control}"
-		_obgbp2_pkg_control="${_obgbp2_pkg_control##*/}"
+		pkg_control="${pkg_control%.pkg/control}"
+		pkg_control="${pkg_control##*/}"
 
-		ob_validate_binary_name "${_obgbp2_pkg_control}"
+		ob_validate_binary_name "${pkg_control}"
 
-		_obgbp2_pkgs="${_obgbp2_pkgs} ${_obgbp2_pkg_control}"
+		pkgs="${pkgs} ${pkg_control}"
 
 	done
 
-	_ob_set_binary_packages "${_obgbp2_pkgs}"
+	_ob_set_binary_packages "${pkgs}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_srcfield_2()
 {
-	_ob_local
-
 	_ob_set_source_parameter "${OB_CONTROL_NAME}" "${OB_CONTROL_VALUE}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_change_2()
 {
-	_ob_local
-
 	_ob_set_source_parameter Source "${OB_CHANGELOG_SOURCE}"
 	_ob_set_source_parameter Version "${OB_CHANGELOG_VERSION}"
 	_ob_set_source_parameter Distribution "${OB_CHANGELOG_DISTRIBUTION}"
@@ -96,75 +90,69 @@ _ob_change_2()
 	_ob_set_source_parameter Date "${OB_CHANGELOG_DATE}"
 
 	# Parse only the first changelog entry.
-	_ob_return 1
-	return ${?}
+	return 1
 }
 
 _ob_binfield_2()
 {
-	_ob_local
-
 	_ob_set_binary_parameter "${_OB_CURRENT_PACKAGE_2}" "${OB_CONTROL_NAME}" \
 		"${OB_CONTROL_VALUE}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_doc_package_2()
 {
-	_ob_local _obgdp2_pkg _obgdp2_doc_pkg
+	local pkg=
+	local doc_pkg=
 
-	for _obgdp2_pkg in $(ob_get_binary_packages); do
-		if [ -r "${_OB_PACKAGE_DIR}/${_obgdp2_pkg}.pkg/docs" ]; then
-			if [ -n "${_obgdp2_doc_pkg}" ]; then
-				_ob_return 1
-				return ${?}
+	for pkg in $(ob_get_binary_packages); do
+		if [ -r "${_OB_PACKAGE_DIR}/${pkg}.pkg/docs" ]; then
+			if [ -n "${doc_pkg}" ]; then
+				return 1
 			fi
-			_obgdp2_doc_pkg="${_obgdp2_pkg}"
+			doc_pkg="${pkg}"
 		fi
 	done
 
-	if [ -z "${_obgdp2_doc_pkg}" ]; then
-		_ob_return 1
-		return ${?}
+	if [ -z "${doc_pkg}" ]; then
+		return 1
 	fi
 
-	echo "${_obgdp2_doc_pkg}"
+	echo "${doc_pkg}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_get_doc_files_2()
 {
-	_ob_local _obgdf2_arch _obgdf2_plat _obgdf2_doc_pkg
+	local arch=
+	local plat=
+	local doc_pkg=
 
-	_obgdf2_arch="${1}"
-	_obgdf2_plat="${2}"
+	arch="${1}"
+	plat="${2}"
 
-	_obgdf2_doc_pkg="$(_ob_get_doc_package_2)"
+	doc_pkg="$(_ob_get_doc_package_2)"
 
 	cat <<-EOF
 		../copyright
 		../changelog changelog.dist
 		../README README.dist
 		EOF
-	cat "${_OB_PACKAGE_DIR}/${_obgdf2_doc_pkg}.pkg/docs"
+	cat "${_OB_PACKAGE_DIR}/${doc_pkg}.pkg/docs"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }
 
 _ob_set_package_substvars_2()
 {
-	_ob_local _obspsv2_pkg
+	local pkg=
 
 	if [ ${#} -eq 1 ]; then
-		_obspsv2_pkg="${1}"
+		pkg="${1}"
 	else
-		_ob_return 125
-		return ${?}
+		return 125
 	fi
 
 	if [ -f "${_OB_PACKAGE_DIR}/substvars" ]; then
@@ -175,14 +163,13 @@ _ob_set_package_substvars_2()
 	ob_set_substvar 'Binary-Version' "$(ob_get_source_parameter 'Version')"
 	ob_set_substvar 'Host-Arch' "${OPK_HOST_ARCH}"
 	ob_set_substvar 'Host-Plat' "${OPK_HOST_PLAT}"
+
+	return 0
 }
 
 _ob_substvar_2()
 {
-	_ob_local
-
 	ob_set_substvar "${OB_CONTROL_NAME}" "${OB_CONTROL_VALUE}"
 
-	_ob_return 0
-	return ${?}
+	return 0
 }