Fix filter filter regex

Now the external material file dialog shows the file types defined in the
template again. Before this fix it did only show "All files (*)".
I don't know what the old syntax was supposed to do or whether it ever worked
with boost::regex, but with std::regex the new one is correct.

diff --git a/src/frontends/qt4/qt_helpers.cpp b/src/frontends/qt4/qt_helpers.cpp
index c1294e56df2d4a869af0d390c5379e4f0fdb18e2..655cbea24f2cd22f34e7fe773a1cc4497bf7639e 100644 (file)
--- a/src/frontends/qt4/qt_helpers.cpp
+++ b/src/frontends/qt4/qt_helpers.cpp
@@ -556,7 +556,7 @@ FileFilterList::FileFilterList(docstring const & qt_style_filter)
 
                // Everything from the start of the input to
                // the start of the match.
-               parse_filter(string(what[-1].first, what[-1].second));
+               parse_filter(string(it, what[0].first));
 
                // Increment the iterator to the end of the match.
                it += distance(it, what[0].second);