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-rw-r--r--src/cmd/eqn/paren.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cmd/eqn/paren.c b/src/cmd/eqn/paren.c
index bb019bf7..01941e32 100644
--- a/src/cmd/eqn/paren.c
+++ b/src/cmd/eqn/paren.c
@@ -21,7 +21,7 @@ void paren(int leftc, int p1, int rightc)
n = 1;
m = n - 2;
if (leftc == '{' || rightc == '}') {
- n = n%2 ? n : ++n;
+ n = n%2 ? n : n+1;
if (n < 3)
n = 3;
m = n-3;