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Backport PR #12367 on branch 7.x (PR: Add handling for malformed pathext env var (Windows)) #12368

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Merged
Carreau merged 1 commit into from
Jun 5, 2020
Merged

Backport PR #12367 on branch 7.x (PR: Add handling for malformed pathext env var (Windows)) #12368

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12 changes: 10 additions & 2 deletions IPython/core/magics/osm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
from IPython.utils.process import abbrev_cwd
from IPython.utils.terminal import set_term_title
from traitlets import Bool
from warnings import warn


@magics_class
Expand All @@ -48,8 +49,15 @@ def __init__(self, shell=None, **kwargs):
winext = os.environ['pathext'].replace(';','|').replace('.','')
except KeyError:
winext = 'exe|com|bat|py'

self.execre = re.compile(r'(.*)\.(%s)$' % winext,re.IGNORECASE)
try:
self.execre = re.compile(r'(.*)\.(%s)$' % winext,re.IGNORECASE)
except re.error:
warn("Seems like your pathext environmental "
"variable is malformed. Please check it to "
"enable a proper handle of file extensions "
"managed for your system")
winext = 'exe|com|bat|py'
self.execre = re.compile(r'(.*)\.(%s)$' % winext,re.IGNORECASE)

# call up the chain
super().__init__(shell=shell, **kwargs)
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