+ \ifx\@empty#1\else\ltj@lst@hss{\null#1\null}\expandafter\lst@FillFixed@\fi}
+\let\lst@FillOutputBox\lst@FillFixed
+% [space/full]flexiblemode (not much useful...)
+\def\ltj@lst@FillFlex#1\@empty{\null#1\null}
+\patchcmd\lst@column@flexible
+ {\let\lst@FillOutputBox\@empty}{\let\lst@FillOutputBox\ltj@lst@FillFlex}{}{}
+\patchcmd\lst@column@fullflexible
+ {\let\lst@FillOutputBox\@empty}{\let\lst@FillOutputBox\ltj@lst@FillFlex}{}{}
+\patchcmd\lst@column@spaceflexible
+ {\let\lst@FillOutputBox\@empty}{\let\lst@FillOutputBox\ltj@lst@FillFlex}{}{}
+