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-rw-r--r--Build/source/texk/web2c/luatexdir/tex/linebreak.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/Build/source/texk/web2c/luatexdir/tex/linebreak.h b/Build/source/texk/web2c/luatexdir/tex/linebreak.h
index 99560ebed2e..1f49278314b 100644
--- a/Build/source/texk/web2c/luatexdir/tex/linebreak.h
+++ b/Build/source/texk/web2c/luatexdir/tex/linebreak.h
@@ -87,7 +87,7 @@ extern halfword find_protchar_right(halfword l, halfword r);
|| ((type((a)) == disc_node) && empty_disc(a)) \
|| ((type((a)) == kern_node) && ((width((a)) == 0) || (subtype((a)) == normal))) \
|| ((type((a)) == rule_node) && zero_dimensions(a)) \
- || ((type((a)) == math_node) && (surround((a)) == 0)) \
+ || ((type((a)) == math_node) && (surround((a)) == 0 || (glue_is_zero((a))))) \
|| (type((a)) == dir_node) \
|| ((type((a)) == hlist_node) && (list_ptr((a)) == null) && zero_dimensions(a)) \
|| (type((a)) == local_par_node) \