ipython/ipython — pull request #2245 by bfroehle (2012-08-03 21:16:49+00:00)
Title: Fix regression in embed() from pull-request #2096.

With certain sets of arguments `compile_flags` might be left as `None`. This
caused IPython to internally raise a TypeError when it tried to do a bitwise
or between `shell.compile.flags` and `PyCF_ONLY_AST` in
`CachingCompiler.ast_parse`.

The regression was introduced in:
b70ac12 embed(): Default to the future compile flags of the calling frame.

Closes #2243.