don't crash on text() w/ width & empty string

samizdatco · samizdatco · commit defce31881f2 · 2022-06-25T15:20:37.000-04:00
diff --git a/plotdevice/gfx/text.py b/plotdevice/gfx/text.py
@@ -262,6 +262,7 @@ def _dedent(cls, attrib_txt, idx=0, inherit=False):
 
         Note that this method *modifies* the attrib_txt reference rather than returning a value.
         """
+        if not attrib_txt.length(): return
         attrib_txt.beginEditing()
         old_graf, _ = attrib_txt.attribute_atIndex_effectiveRange_("NSParagraphStyle", idx, None);
         graf = old_graf.mutableCopy()
