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-rw-r--r--src/interp/c-util.boot2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/interp/c-util.boot b/src/interp/c-util.boot
index 4f5cf5ae..91bafd3e 100644
--- a/src/interp/c-util.boot
+++ b/src/interp/c-util.boot
@@ -272,7 +272,7 @@ intersectionEnvironment(e,e') ==
--$ie:= e'' this line is for debugging purposes only
deltaContour([[c,:cl],:el],[[c',:cl'],:el']) ==
- ^el=el' => systemError '"deltaContour" --a cop out for now
+ not EQ(el,el') => systemError '"deltaContour" --a cop out for now
eliminateDuplicatePropertyLists contourDifference(c,c') where
contourDifference(c,c') == [first x for x in tails c while (x~=c')]
eliminateDuplicatePropertyLists contour ==