Amend 207eaeee9071cb

[lyx.git] / src / DocIterator.cpp

diff --git a/src/DocIterator.cpp b/src/DocIterator.cpp
index 7c1924cb4586a95d5fc1edab17b9f1b71a06689d..ace4498a56e91d6f4e8af525f77c567ec74544b0 100644 (file)
--- a/src/DocIterator.cpp
+++ b/src/DocIterator.cpp
@@ -495,8 +495,6 @@ void DocIterator::backwardPosIgnoreCollapsed()
 }
 
 
-#if 0
-// works, but currently not needed
 void DocIterator::backwardInset()
 {
        backwardPos();
@@ -514,7 +512,6 @@ void DocIterator::backwardInset()
                backwardPos();
        }
 }
-#endif
 
 
 bool DocIterator::hasPart(DocIterator const & it) const
@@ -549,6 +546,11 @@ void DocIterator::updateInsets(Inset * inset)
        size_t const n = slices_.size();
        slices_.resize(0);
        for (size_t i = 0 ; i < n; ++i) {
+               if (dit[i].empty() && pos() > 0 && prevMath().lyxCode() == MATH_SCRIPT_CODE)
+                       // Workaround: With empty optional argument and a trailing script,
+                       // we have empty slices in math macro args (#11676)
+                       // FIXME: Find real cause!
+                       continue;
                LBUFERR(inset);
                push_back(dit[i]);
                top().inset_ = inset;