cpt-cat: minor changes

- Respect given filenames even when the first argument is empty
- Clean up usage output

FossilOrigin-Name: a755fa3c9719f79ebf3855a2a54ba73cd63481d211bf0430fbfe5572d43e3ccd

1 files changed, 11 insertions, 8 deletions

diff --git a/contrib/cpt-cat b/contrib/cpt-cat
index 0529287..be0ab56 100755
--- a/contrib/cpt-cat
+++ b/contrib/cpt-cat
@@ -3,18 +3,21 @@
 # File names are printed to stderr.
 case "$1" in
     --help|-h)
-        printf '\033[1;33m-> \033[musage: %s [pkg] [file...]\n' "${0##*/}"
+        printf 'usage: %s [pkg] [file...]\n' "${0##*/}"
         exit 0
         ;;
     '')
-        set -- "${PWD##*/}"
+        [ "$#" -gt 1 ] && shift
+        set -- "${PWD##*/}" "$@"
 esac
 
-cpt-list "${pkg:=$1}" >/dev/null ; shift
+pkg=$1; shift
+cpt-list "$pkg" >/dev/null
 
-for file in ${*:-build depends sources version} ; do
-    [ -f "/var/db/cpt/installed/$pkg/$file" ] && {
-        printf '\033[1m%s:\033[m\n' "$file" >&2
-        cat "/var/db/cpt/installed/$pkg/$file"
-    }
+[ "$1" ] || set -- build depends sources version
+
+for file; do
+    [ -f "/var/db/cpt/installed/$pkg/$file" ] || continue
+    printf '\033[1m%s:\033[m\n' "$file" >&2
+    cat "/var/db/cpt/installed/$pkg/$file"
 done