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Amend c2facb8c

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Make sure the base of a script is not empty before accessing it.
This commit is contained in:
Enrico Forestieri 2021-03-01 10:08:08 +01:00
parent 52ce0ff49a
commit bb2c1c3485
1 changed files with 2 additions and 2 deletions
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4
src/Cursor.cpp
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@ -2041,7 +2041,7 @@ bool Cursor::mathForward(bool word)
while (pos() < lastpos() && mc == nextMath().mathClass());
} else if (openable(nextAtom())) {
InsetMathScript const * n = nextMath().asScriptInset();
bool to_brace_deco = n
bool to_brace_deco = n && !n->nuc().empty()
&& n->nuc().back()->lyxCode() == MATH_DECORATION_CODE
&& n->nuc().back()->mathClass() == MC_OP;
// single step: try to enter the next inset
@ -2095,7 +2095,7 @@ bool Cursor::mathBackward(bool word)
}
} else if (openable(prevAtom())) {
InsetMathScript const * p = prevMath().asScriptInset();
bool to_brace_deco = p
bool to_brace_deco = p && !p->nuc().empty()
&& p->nuc().back()->lyxCode() == MATH_DECORATION_CODE
&& p->nuc().back()->mathClass() == MC_OP;
// single step: try to enter the preceding inset