New submission from Chris Jerdonek:
While working on issue 1859, I noticed that textwrap.wrap()'s tab expansion
does not seem to behave sensibly.
In particular, the documentation says, "If expand_tabs is true, then all tab
characters in text will be expanded to zero or more spaces, *depending on the
current column* and the given tab size."
The problem is that tab expansion is done as the first stage (and in
particular, before wrapping), which means that "the current column" is no
longer current after wrapping. This leads to results like--
from textwrap import wrap
text = ("a\tb "
"a\tb")
lines = wrap(text, width=5, tabsize=4)
for line in lines:
print(repr(line))
Output:
'a b'
'a b'
One would expect tab expansion to occur after (or while) wrapping, so that tab
stops line up in the wrapped output.
----------
messages: 166815
nosy: cjerdonek
priority: normal
severity: normal
status: open
title: textwrap.wrap expand_tabs does not behave as expected
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Python tracker <[email protected]>
<http://bugs.python.org/issue15492>
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