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Bugfix: fix no substitution error #59

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Bugfix: fix no substitution error #59

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11 changes: 6 additions & 5 deletions pynliner/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -170,11 +170,12 @@ def _unsubstitute_output(self):
"""
Put substitutions back into the output
"""
self.output = re.sub(
SUBSTITUTION_PATTERN,
lambda m: self._substitutions[int(m.group(1))],
self.output
)
if self._substitutions:
self.output = re.sub(
SUBSTITUTION_PATTERN,
lambda m: self._substitutions[int(m.group(1))],
self.output
)

def _get_soup(self):
"""Convert source string to BeautifulSoup object. Sets it to self.soup.
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