Fix assertion when checking if change in selection

[lyx.git] / src / insets / InsetArgument.cpp

diff --git a/src/insets/InsetArgument.cpp b/src/insets/InsetArgument.cpp
index df1344e6267a5537bcc4e972ea4b0afacb83133f..ba7031dab360c4c64b9e6922fbf7a8bc63997566 100644 (file)
--- a/src/insets/InsetArgument.cpp
+++ b/src/insets/InsetArgument.cpp
@@ -314,7 +314,8 @@ void InsetArgument::latexArgument(otexstream & os,
        runparams.pass_thru = isPassThru();
        InsetText::latex(ots, runparams);
        TexString ts = ots.release();
-       bool const add_braces = ldelim != "{" && support::contains(ts.str, rdelim);
+       bool const add_braces = !ldelim.empty() && ldelim != "{"
+                       && support::contains(ts.str, rdelim);
        os << ldelim;
        if (add_braces)
                os << '{';