This relaxes the comparison threshold between the reference data
and the bitmaps produced by Ghostscript interpreting the vectorized
image. Apparently the threshold has become too low with the switch
to from Ghostscript 2.21 to 2.22.
--- potrace-1.15/check/postscript-check.sh 2018-01-06 19:47:26.194900686 +0100
+++ potrace-1.15/check/postscript-check.sh 2018-01-06 19:51:35.937503739 +0100
@@ -70,15 +70,15 @@ if test $? -ne 0; then
echo "Something is wrong with $GS; skipping this test" >& 2
exit 77
fi
-actiondiff "$TMP2" "$REFDATA" 1000
+actiondiff "$TMP2" "$REFDATA" 1500
action $POTRACE -r50 -p -L 0 -B 0 --opaque -o "$TMP1" "$DATA"
action "$GS" -q -dNOPAUSE -sDEVICE=pbmraw -g460x394 -r100x100 -sOutputFile="$TMP2" -- "$TMP1"
-actiondiff "$TMP2" "$REFDATA" 1200
+actiondiff "$TMP2" "$REFDATA" 1500
action $POTRACE -r50 -p -L 0 -B 0 -A 160 -o "$TMP1" "$DATA"
action "$GS" -q -dNOPAUSE -sDEVICE=pbmraw -g568x528 -r100x100 -sOutputFile="$TMP2" -- "$TMP1"
-actiondiff "$TMP2" "$REFDATAROT" 1200
+actiondiff "$TMP2" "$REFDATAROT" 1500
action rm -f "$TMP1"
action rm -f "$TMP2"
--- potrace-1.15/check/pdf-check.sh 2018-01-06 19:47:28.698886663 +0100
+++ potrace-1.15/check/pdf-check.sh 2018-01-06 20:54:14.895460329 +0100
@@ -72,15 +72,15 @@ if test $? -ne 0 -o ! -f "$TMP2"; then
echo "GS does not understand PDF; skipping this test" >& 2
exit 77
fi
-actiondiff "$TMP2" "$REFDATA" 1000
+actiondiff "$TMP2" "$REFDATA" 1500
action $POTRACE -r50 -p -L 0 -B 0 --opaque -b pdf -o "$TMP1" "$DATA"
action "$GS" -q -dNOPAUSE -sDEVICE=pbmraw -g460x394 -r100x100 -sOutputFile="$TMP2" -- "$TMP1"
-actiondiff "$TMP2" "$REFDATA" 1200
+actiondiff "$TMP2" "$REFDATA" 1500
action $POTRACE -r50 -p -L 0 -B 0 -A 160 -b pdf -o "$TMP1" "$DATA"
action "$GS" -q -dNOPAUSE -sDEVICE=pbmraw -g568x528 -r100x100 -sOutputFile="$TMP2" -- "$TMP1"
-actiondiff "$TMP2" "$REFDATAROT" 1200
+actiondiff "$TMP2" "$REFDATAROT" 1500
action rm -f "$TMP1"
action rm -f "$TMP2"
Diff finished. Sat Jan 6 20:54:50 2018