diff --git a/zpac b/zpac
index 2b73d8d..3ab382a 100755
--- a/zpac
+++ b/zpac
@@ -9,8 +9,7 @@ cfg_workdir="$PWD"
 cfg_aur_url='https://aur.archlinux.org'
 cfg_aur_api="${cfg_aur_url}/rpc.php"
 
-echo() { printf '%s\n' "$*"; }
-err() { echo "$*" >&2; }
+err() { printf "$@" >&2; }
 
 _cat() { while read -r; do printf '%s\n' "$REPLY"; done }
 
@@ -29,7 +28,7 @@ usage() {
 }
 
 aur.search() {
-	declare aur_api_search_data aur_search_result_num aur_search_results version description
+	declare i aur_api_search_data aur_search_result_num aur_search_results version description
 
 	aur_api_search_data=$( curl -skL "${cfg_aur_api}?type=search&arg=${1}" )
 	aur_search_result_num=$( jshon -e resultcount -u <<< "$aur_api_search_data" )
@@ -59,11 +58,11 @@ aur.info() {
 
 	(( aur_query_result )) || { return 1; }
 
-	echo "$pkg_aur_info"
+	printf '%s' "$pkg_aur_info"
 }
 
 aur.get() {
-	declare pkg_aur_info pkg_base tarball_path depends makedepends dep_name aur_api_multireq dep_name aur_deps_api_data aur_deps_count aur_deps
+	declare i pkg_aur_info pkg_base tarball_path depends makedepends dep_name aur_api_multireq dep_name aur_deps_api_data aur_deps_count aur_deps
 	
 	read -r pkg_aur_info
 
@@ -76,18 +75,18 @@ aur.get() {
 
 	(( flag_force )) || {
 		[[ -d "${cfg_workdir}/${pkg_base}" ]] && {
-			echo "Found ${pkg_base} in ${cfg_workdir}, skipping. Use -f to override."
+			printf "Found %s in %s, skipping. Use -f to override\n" "${pkg_base}" "${cfg_workdir}"
 			return 17
 		}
 	}
 
 	cd "$cfg_workdir"
 
-	echo "Working in ${cfg_workdir}"
+	printf "Working in %s\n" "${cfg_workdir}"
 
-	echo "Downloading ${pkg_base}"
+	printf "Downloading %s\n" "${pkg_base}"
 	{ curl -skL "${cfg_aur_url}${tarball_path}" | gzip -d | tar x; } || {
-		err "Fail!"
+		err "Fail!\n"
 		return 1
 	}
 
@@ -104,7 +103,7 @@ aur.get() {
 		aur_deps_count=$( jshon -e resultcount <<< "$aur_deps_api_data" )
 
 		if (( aur_deps_count )); then
-			echo "Getting dependencies for ${pkg_base}."
+			printf "Getting dependencies for %s\n" "${pkg_base}"
 
 			aur_deps=( $( jshon -e results -a -e Name -u <<< "$aur_deps_api_data" ) )
 
@@ -204,7 +203,7 @@ main() {
 			(-f) flag_force=1;;
 
 			(-*)
-				err "Unknown key: $1"
+				err "Unknown key: %s\n" "$1"
 				usage
 				return 1
 			;;
@@ -234,7 +233,7 @@ main() {
 		(get)
 			[[ -d "$cfg_workdir" ]] || {
 				mkdir -p "$cfg_workdir" || {
-					err "Can't create workdir: ${cfg_workdir}."
+					err "Can't create workdir: %s\n" "$cfg_workdir"
 					return 1
 				}
 			}
@@ -251,12 +250,12 @@ main() {
 				done < <( pacman -Si "$package" )
 
 				[[ "$repo" ]] || {
-					err "Can't find package ${package}"
+					err "Can't find package %s\n" "$package"
 					return 1
 				}
 			fi
 
-			echo "Found ${package} in ${repo}."
+			printf "Found %s in %s\n" "$package" "$repo"
 
 			case "$repo" in
 				(aur)
@@ -266,7 +265,7 @@ main() {
 					abs.get "$package" "$repo";;
 
 				(*)
-					err "Repository $repo not supported."
+					err "Repository %s not supported\n" "$repo"
 					return 1;;
 			esac
 		;;
@@ -274,7 +273,7 @@ main() {
 		(search)
 			if (( flag_search_aur )); then
 				aur.search "$package" || {
-					err "No packages found."
+					err "No packages found\n"
 					return 1
 				}
 			elif (( flag_search_syncdb )); then
@@ -284,7 +283,7 @@ main() {
 				pacman -Ss "$package" 2>/dev/null || { flag_pacman_search_fail=1; }
 
 				if (( flag_aur_search_fail && flag_pacman_search_fail )); then
-					err "No packages found."
+					err "No packages found\n"
 					return 1
 				fi
 			fi