On Thu, Aug 11, 2016 at 9:07 AM, Paul Moore p.f.moore@gmail.com wrote:
set codepage to UTF-8 ... set codepage back spawn subprocess X, but don't wait for it set codepage to UTF-8 ... ... At this point what codepage does Python see? What codepage does process X see? (Note that they are both sharing the same console).
The input and output codepages are global data in conhost.exe. They aren't tracked for each attached process (unlike input history and aliases). That's how chcp.com works in the first place. Otherwise its calls to SetConsoleCP and SetConsoleOutputCP would be pointless.
But IMHO all talk of using codepage 65001 is a waste of time. I think the trailing garbage output with this codepage in Windows 7 is unacceptable. And getting EOF for non-ASCII input is a show stopper. The problem occurs in conhost. All you get is the EOF result from ReadFile/ReadConsoleA, so it can't be worked around. This kills the REPL and raises EOFError for input(). ISTM the only people who think codepage 65001 actually works are those using Windows 8+ who occasionally need to print non-OEM text and never enter (or paste) anything but ASCII text.