fully support pre-epoch timestamps

not sure why, but why not

1 files changed, 6 insertions, 9 deletions

diff --git a/backomp b/backomp
index 1d465fa..afc9b96 100755
--- a/backomp
+++ b/backomp
@@ -16,7 +16,7 @@ EOF
 
 read -rd '' AWK_FILTER <<'EOF'
 function flr(n, s) {
-	return int(n / s) * s
+	return n - (((n % s) + s) % s)
 }
 
 function mstart(t) {
@@ -36,10 +36,10 @@ BEGIN {
 		buckets[++n_buckets] = b
 	}
 
-	split("sun mon tue wed thu fri sat", arr)
+	split("mon tue wed thu fri sat sun", arr)
 	for (i in arr)
 		arr2[arr[i]] = i - 1
-	wshift = (11 - arr2[opt_week_start])*24*60*60
+	wshift = (10 - arr2[opt_week_start])*24*60*60
 }
 
 !n_buckets || keep_first && NR == 1 {
@@ -49,10 +49,6 @@ BEGIN {
 n_buckets {
 	t = mktime(gensub(/(.*\/|^)(.+)-(..)-(..)-(..)(..)(..)$/,
 		"\\2 \\3 \\4 \\5 \\6 \\7", 1), 1)
-	if (t < 0) {
-		++keep[$0]
-		next
-	}
 
 	bt["h"] = flr(t, 60*60)
 	bt["d"] = flr(t, 24*60*60)
@@ -71,8 +67,9 @@ n_buckets {
 			}
 		}
 
-		if (newest_in[b] && bt[b] == last[b, b] && (i == 1 ||
-				bt[buckets[i-1]] != last[b, buckets[i-1]]))
+		if (newest_in[b] && (b, b) in last && bt[b] == last[b, b] &&
+				(i == 1 || bt[buckets[i-1]] != \
+					last[b, buckets[i-1]]))
 			next
 
 		if ((b, bt[b]) in bkeep || ret[b] == "*" || bc[b]++ < ret[b])