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Avoid empty spans

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YishiMichael 2022-04-04 14:53:40 +08:00
parent 3c3264d7d6
commit 974d9d5ab0
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1 changed files with 8 additions and 1 deletions
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9
manimlib/mobject/svg/text_mobject.py
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@ -313,11 +313,18 @@ class MarkupText(LabelledString):
if isinstance(substr_or_span, str):
return self.find_substr(substr)
string_len = len(self.string)
span_begin, span_end = substr_or_span
if span_begin is None:
span_begin = 0
elif span_begin < 0:
span_begin += string_len
if span_end is None:
span_end = len(self.string)
span_end = string_len
elif span_end < 0:
span_end += string_len
if span_begin >= span_end:
return []
return [(span_begin, span_end)]
# Pre-parsing