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-rw-r--r--tex/context/base/mkiv/spac-ver.mkiv6
1 files changed, 4 insertions, 2 deletions
diff --git a/tex/context/base/mkiv/spac-ver.mkiv b/tex/context/base/mkiv/spac-ver.mkiv
index ef33652f1..7b36f9a5b 100644
--- a/tex/context/base/mkiv/spac-ver.mkiv
+++ b/tex/context/base/mkiv/spac-ver.mkiv
@@ -1876,8 +1876,10 @@
\resetteststrut
\offinterlineskip
\hsize#2%
- \ifnum\gridboxlinenomode=\plusthree
- \gridboxlinenomode\ifodd\realpageno\plusone\else\plustwo\fi
+ \ifcase\gridboxlinenomode\or\or\or
+ \gridboxlinenomode\doifoddpageelse\plusone\plustwo % 3: outer
+ \or
+ \gridboxlinenomode\doifoddpageelse\plustwo\plusone % 4: inner
\fi
\topskipcorrection
\gridboxvbox % calculated size