Fix for issue 193

inkex/utils.py

@@ -172,8 +172,10 @@ def to(kind):  # pylint: disable=invalid-name
 
 
 def strargs(string, kind=float):
-    """Returns a list of floats from a string with commas or space separators"""
-    return [kind(val) for val in string.replace(',', ' ').split()]
+    """Returns a list of floats from a string with commas or space separators, 
+        also splits at -(minus) signs by adding a space in front of the - sign
+    """
+    return [kind(val) for val in string.replace(',', ' ').replace('-', ' -').replace('e ', 'e').split()]
 
 
 def addNS(tag, ns=None):  # pylint: disable=invalid-name

tests/test_inkex_utils.py

@@ -11,7 +11,7 @@ from argparse import ArgumentTypeError
 
 import pytest
 
-from inkex.utils import addNS, debug, errormsg, filename_arg, Boolean, to
+from inkex.utils import addNS, debug, errormsg, filename_arg, Boolean, to, strargs
 
 
 class TestInkexBasic(object):
@@ -71,6 +71,15 @@ class TestInkexBasic(object):
         assert addNS('car', 'http://www.inkscape.org/namespaces/inkscape') == '{http://www.inkscape.org/namespaces/inkscape}car'
         assert addNS('{http://www.inkscape.org/namespaces/inkscape}bar', 'rdf') == '{http://www.w3.org/1999/02/22-rdf-syntax-ns#}bar'
 
+    def test_strargs(self):
+        """Test strargs function"""
+        assert strargs('1.0 2.0 3.0 4.0') == [1.0, 2.0, 3.0, 4.0]
+        assert strargs('1 -2 3 -4') == [1.0, -2.0, 3.0, -4.0]
+        assert strargs('1,-2,3,-4') == [1.0, -2.0, 3.0, -4.0]
+        assert strargs('1-2 3-4') == [1.0, -2.0, 3.0, -4.0]
+        assert strargs('1-2,3-4') == [1.0, -2.0, 3.0, -4.0]
+        assert strargs('1-2-3-4') == [1.0, -2.0, -3.0, -4.0]
+
     def test_ascii(self, capsys):
         """Parse ABCabc"""
         errormsg('ABCabc')