--export-area didnt handle decimal values correct

Im calling Inkscape from the console to export a particular region of a
drawing. And everytime i try to use decimal values for "--export-area" it
creates crazy results. (Used Version: 0.45.1 affects Ubuntu and Windows)

For example:

SOURCE_NAME="sakura.svg"
TARGET_NAME="sakura-export.png"
X0=0.0
Y0=0.0
X1=$(inkscape -f $SOURCE_NAME -W)
Y1=$(inkscape -f $SOURCE_NAME -H)
AREA_ARG=$X0":"$Y0":"$X1":"$Y1
echo $AREA_ARG
inkscape \
--file=$SOURCE_NAME \
--export-png=$TARGET_NAME \
--export-area=$AREA_ARG \
--export-width=400 \
--export-height=300

produces the following errormessage:

0.0:0.0:1121.1296:836.25244
** (inkscape:22037): WARNING **: Export area '0.0:0.0:1121.1296:836.25244'
has negative width or height. Nothing exported.

But it has a correct width and height!

The related code is in "src/main.cpp" at Line 861:

    if (sp_export_area) {
        /* Try to parse area (given in SVG pixels) */
        if (!sscanf(sp_export_area, "%lg:%lg:%lg:%lg", &area.x0, &area.y0,
&area.x1, &area.y1) == 4) {
            g_warning("Cannot parse export area '%s'; use 'x0:y0:x1:y1'.
Nothing exported.", sp_export_area);
            return;
        }
        if ((area.x0 >= area.x1) || (area.y0 >= area.y1)) {
            g_warning("Export area '%s' has negative width or height.
Nothing exported.", sp_export_area);
            return;
        }
    }

I cant say what is the exact error (im no C/C++ Developer), but it seems
that sscanf dont parse or store the values correctly.

Contact: <email address hidden>