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-rw-r--r--src/algebra/pattern.spad.pamphlet2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/algebra/pattern.spad.pamphlet b/src/algebra/pattern.spad.pamphlet
index a0e4c3a0..679af677 100644
--- a/src/algebra/pattern.spad.pamphlet
+++ b/src/algebra/pattern.spad.pamphlet
@@ -328,7 +328,7 @@ Pattern(R:SetCategory): Exports == Implementation where
q := p.pat
q case ret => empty()
q case exp => variables(q.exp.val)
- q case qot => concat_!(variables(q.qot.num), variables(q.qot.den))
+ q case qot => concat!(variables(q.qot.num), variables(q.qot.den))
q case ker => concat [variables r for r in q.ker.arg]
empty()