Improve --help switch output for pacman contrib and pacman scripts

Unify the formatting of the --help switch for pacman utils, if it exists.
All of the pacman utils will now output help text using the following
format:

  util-name (pacman) v<pacman version>

  one line description of util's purpose

  Usage: util-name [options]

    -b, --bar      whatever --bar does
    -f, --foo      whatever --foo does
    -h, --help     display this help message

Reported-by: Karol Błażewicz <karol.blazewicz at gmail.com>
Signed-off-by: Jason St. John <jstjohn@purdue.edu>

1 files changed, 11 insertions, 7 deletions

diff --git a/contrib/updpkgsums.sh.in b/contrib/updpkgsums.sh.in
index 4d35357f..0f52db4c 100644
--- a/contrib/updpkgsums.sh.in
+++ b/contrib/updpkgsums.sh.in
@@ -23,12 +23,16 @@ declare -r myname='updpkgsums'
 declare -r myver='@PACKAGE_VERSION@'
 
 usage() {
-	printf 'usage: %s [buildfile]\n\n' "$myname"
-	printf '    -h, --help        display this help message and exit\n'
-	printf '    -V, --version     display version information and exit\n\n'
-	printf '%s will perform an in place update the checksums in the\n' "$myname"
-	printf 'path specified by [buildfile], defaulting to PKGBUILD in the current\n'
-	printf 'working directory.\n'
+	printf "%s (pacman) v%s\n" "${myname}" "${myver}"
+	echo
+	printf "%s will perform an in place update of the checksums in the\n" "${myname}"
+	echo "path specified by [build file], defaulting to PKGBUILD in the current"
+	echo "working directory."
+	echo
+	printf "Usage: %s [build file]\n" "${myname}"
+	echo
+	echo "    -h, --help        display this help message and exit"
+	echo "    -V, --version     display version information and exit"
 }
 
 version() {
@@ -43,7 +47,7 @@ esac
 
 buildfile=${1:-PKGBUILD}
 if [[ ! -f $buildfile ]]; then
-	printf '==> ERROR: %s not found or is not a file\n' "$buildfile"
+	printf "==> ERROR: %s not found or is not a file\n" "$buildfile"
 	exit 1
 fi