Fix space characters problem of Text

manimlib/mobject/svg/svg_mobject.py

@@ -87,9 +87,9 @@ def get_mobjects_from(self, element):
                 for child in element.childNodes
             ])
         elif element.tagName == 'path':
-            result.append(self.path_string_to_mobject(
-                element.getAttribute('d')
-            ))
+            temp = element.getAttribute('d')
+            if temp != '':
+                result.append(self.path_string_to_mobject(temp))
         elif element.tagName == 'use':
             result += self.use_to_mobjects(element)
         elif element.tagName == 'rect':

manimlib/mobject/svg/text_mobject.py

@@ -5,6 +5,7 @@
 import cairo
 import manimlib.constants as consts
 from manimlib.constants import *
+from manimlib.mobject.geometry import Dot
 from manimlib.mobject.svg.svg_mobject import SVGMobject
 from manimlib.utils.config_ops import digest_config
 
@@ -44,17 +45,22 @@ class Text(SVGMobject):
         't2g': {},
         't2s': {},
         't2w': {},
+        'tab_width': 4,
     }
 
     def __init__(self, text, **config):
-        self.text = text
         self.full2short(config)
         digest_config(self, config)
+        if text.find('\t') != -1:
+            text = text.replace('\t', ' '*self.tab_width)
+        self.text = text
         self.lsh = self.size if self.lsh == -1 else self.lsh
 
         file_name = self.text2svg()
         self.remove_last_M(file_name)
         SVGMobject.__init__(self, file_name, **config)
+        self.apply_space_chars()
+        self.move_into_position()
 
         nppc = self.n_points_per_cubic_curve
         for each in self:
@@ -80,6 +86,21 @@ def __init__(self, text, **config):
         # anti-aliasing
         self.scale(TEXT_MOB_SCALE_FACTOR)
 
+    def apply_space_chars(self):
+        indexes = self.find_indexes(' ') + self.find_indexes('\n')
+        indexes = sorted(indexes, key=lambda i: i[0])
+        if len(self.text) == len(indexes):
+            space = Dot(fill_opacity=0, stroke_opacity=0)
+            self.submobjects = [space.copy() for _ in range(len(indexes))]
+            return
+        for start, _ in indexes:
+            space = Dot(fill_opacity=0, stroke_opacity=0)
+            if start == 0:
+                space.move_to(self.submobjects[0].get_center())
+            else:
+                space.move_to(self.submobjects[start-1].get_center())
+            self.submobjects.insert(start, space)
+
     def remove_last_M(self, file_name):
         with open(file_name, 'r') as fpr:
             content = fpr.read()