New submission from Vladimir Rutsky <rutsky.vladi...@gmail.com>:
This is code from recent trace.py
(http://svn.python.org/view/python/branches/release27-maint/Lib/trace.py?view=markup):
trace.py:169:
# Ignore a file when it contains one of the ignorable paths
for d in self._dirs:
# The '+ os.sep' is to ensure that d is a parent directory,
# as compared to cases like:
# d = "/usr/local"
# filename = "/usr/local.py"
# or
# d = "/usr/local.py"
# filename = "/usr/local.py"
if filename.startswith(d + os.sep):
self._ignore[modulename] = 1
return 1
Directories comparison like "filename.startswith(d + os.sep)" works incorrect
on case-insensitive filesystems (such as NTFS on Windows).
This leads to confusing results on Windows:
python trace.py --ignore-dir='$prefix' -t test.py
or
python trace.py --ignore-dir C:\Python26\Lib -t test.py
shows all calls from standard library, but this one doesn't:
python trace.py --ignore-dir=c:\python26\lib -t test.py
See attached test files and log for details.
----------
components: Library (Lib)
files: test.py
messages: 126101
nosy: vrutsky
priority: normal
severity: normal
status: open
title: trace module compares directories as strings (--ignore-dir)
versions: Python 2.7
Added file: http://bugs.python.org/file20368/test.py
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue10896>
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