The switch in Exception__str__ didn't clear the error if
PySequence_Size() raised an exception.  Added a case -1 which clears
the error and falls through to the default case.

Definite backport candidate (this dates all the way to Python 2.0).

Rev 1.4 fdrake
Use string.ascii_letters instead of string.letters (SF bug #226706)

Rev 1.5 doerwalter
(string methods)

Rev 1.6 GvR
Finally fix SF bug #441172, using a variant of patch ##443626:
canceling an edit operation would not revert the value of the field.
The fix takes care to destroy the Entry object, as suggested in the
patch.

Rev 1.7 Geiger Ho / GvR
(previously applied - Idlefork Rev 1.3)

Rev 1.8 doerwalter
(string methods)

Rev 1.3 nnorwitz
Remove unnecessary imports

Rev 1.17 doerwalter
(string methods)

Rev 1.3 doerwalter
(string methods)

Rev 1.2 doerwalter
(string methods)

Rev 1.3 tim_one
Convert a pile of obvious "yes/no" functions to return bool.

Rev 1.11 GvR
Fix for SF bug #448835.

Fix this to work with the new (still undocumented) tabnanny API.

I'm afraid Stephen will have to add this fix to the IDLE fork code
base as well.

Rev 1.12 rhettinger
(skip, done differently in Idlefork)

Rev 1.13 time_one
(skip, NA)

Rev 1.5 tim_one
Convert a pile of obvious "yes/no" functions to return bool

Rev 1.6 GvR
Rev 1.7 Gvr
(Already merged Idlefork ReplaceDialog.py 1.3.2.1 and 1.4)

Rev 1.8 doerwalter
(string methods)

Rev 1.9 nnorwitz
Remove unnecessary imports

Rev 1.35 fdrake
Use string.ascii_letters instead of string.letters (SF bug #226706).
Move computation of sets of characters out of the body of the function
that uses them.

Rev 1.36 tim_one
Convert a pile of obvious "yes/no" functions to return bool

Rev 1.37
(skip, done differently in Idlefork)

Rev 1.38 loewis
Patch #590913: PEP 263 support.

Rev 1.39 loewis
Convert characters from the locale's encoding on output.
Reject characters outside the locale's encoding on input.

Rev 1.40 doerwalter
(string methods)

Rev 1.41
(skipped, done by GvR in rpc)

preparation for ReST-ification of NEWS.  (Also tests checkin ability
from my new Powerbook.  woohoo!)

          being used to dump output (no seeks), so we can avoid a lot
          of extra checks being made.

Rev 1.10 doerwalter
(string methods)

Rev 1.6 doerwalter
(string methods)

Rev 1.7 loewis
Convert characters from the locale's encoding on output.
Reject characters outside the locale's encoding on input.

platforms.

the end, in the hope of saving some bytes on 64-bit machines.  (Too
bad n_nchildren can't be made an unsigned short, but
test/test_longexp.py specifically tests for more than 2**16 subtrees
at one level.)

I don't expect any binary compatibility issues here, unless someone
has an old binary of parsermodule.so saved away.

Rev 1.4 tim_one
Convert a pile of obvious "yes/no" functions to return bool

Rev 1.5  doerwalter
string methods

Rev 1.5 tim_one
Convert a pile of obvious "yes/no" functions to return bool.

Rev 1.6 gvanrossum
(partially merged previously, move line outside try: block)

Provisional fix for writefile() [SF bug # 541730].

The problem was that an exception can occur in the text.get() call or
in the write() call, when the text buffer contains non-ASCII
characters.  This causes the previous contents of the file to be lost.

The provisional fix is to call str(self.text.get(...)) *before*
opening the file, so that if the exception occurs, we never open the
file.

Two orthogonal better solutions have to wait for policy decisions:

1. We could try to encode the data as Latin-1 or as UTF-8; but that
   would require IDLE to grow a notion of file encoding which requires
   more thought.

2. We could make backups before overwriting a file.  This requires
   more thought because it needs to be fast and cross-platform and
   configurable.

Rev 1.7 gvanrossum
(previously merged with modifications by Stephen M. Gava)

Add primitive printing support for Unix and Windows.

Rev 1.8 loewis
Patch #590913: PEP 263 support.

Rev 1.9 gvanrossum
(tempfile.py interface -- deferred)

Rev 1.10 tim_one
whitespace normalization

Rev 1.11 nnorwitz
(deferred pending 1.9 integration)

"import" statement, catch and ignore all exceptions.  add/fix some
comments about this.

Rev 1.4 (string methods)

Rev 1.5 Remove unnecessary imports

Rev 1.10 (string methods)

Rev 1.39 GvR
Properly fix SF bug #507298 (Gregor Lingl): shellpython2.2 -Qnew smart
indent error

Use // where int division is intended.  (This breaks IDLE for use with
previous Python versions -- I don't care.)

Rev 1.40 tim_one
Convert a pile of obvious "yes/no" functions to return bool.

Rev 1.41 foffani/loewis
(already merged)  - MS html help

Rev 1.42
(skip, done differently in Idlefork)

Rev 1.43 tzot/rhettinger
Extended IDLE's open module menu item to handle hierarchical module names.
Will look at doing something similar in import.c so that the effort won't
have to be repeated elsewhere.
Closes SF patch 600152.

Rev 1.44 doerwalter
(string methods)

testNtoHL but testNtoH.

Rev 1.16
(skip. The Edward K. Ream breakpoint fix has been added to bdb.py
and idlefork Debugger.py no longer overrides Bdb.set_break() )

Rev 1.17
Remove unnecessary imports

Rev 1.13 (string methods)

Rev 1.9
Improve handling of docstrings.  I had feared this was a case of
introspection incompatibility, but in fact it's just that calltips
always gave up on a docstring that started with a newline (but
didn't realize they were giving up <wink>).

Rev 1.10
(already merged)

Rev 1.11
(whitespace normalization, skip this time)

Rev 1.12
Remove unnecessary imports