Issue2276

Using Ctrl-D works but Ctrl-Z is what CPython uses.

I found a workaround with a little experimentation. Create a file %USERPROFILE%\.inputrc and put the desired key binding in:

"\C-z": "\C-d"

Presumably we can create this key binding programmatically in JLine2, using http://jline.github.io/jline2/apidocs/reference/jline/console/KeyMap.html, specifically http://jline.github.io/jline2/apidocs/reference/jline/console/KeyMap.html#bindIfNotBound(java.lang.CharSequence, java.lang.Object), so as to not override user intent.

With my workaround defined, I attempted to look up how JLine2 actually sets things up by examining the key map in use by starting with the ConsoleReader as set with sys._jy_console.reader (defined if using JLine2, otherwise an AttributeError). As usual for such experiments, I use the Jython console itself. However sys._jy_console.reader.keys.getBound("\z") returned jline.console.Operation.SELF_INSERT - no difference from not setting .inputrc - so looks there's some additional work to figure out what's going on here. As usual, this will require reading JLine2 source - that's really the only docs available.

Would an acceptable fix be to just change the instruction text to read
"Use exit() or Ctrl-D plus Return to exit" ?

Ctrl-D is so common in Linux environments, that many programmers are already familiar with it.

eaaltonen - what instruction text should we modify? Not certain what we should modify to get to ""Use exit() or Ctrl-D plus Return to exit". However, I do expect this to be documented in the release notes.

I expect control-Z will be supported on Windows as of 2.7.1, but in addition to control-D. This also works well with the philosophy of JLine, which attempts to provide standard Unix-like console usage.

Looks like it's in Lib/site.py

elif os.sep == '\\':
        eof = 'Ctrl-Z plus Return'

Ack. By the time we fix in 2.7.1, we probably will have control-Z support re-enabled, but it's good to know it's coming from the exit *string* set when running the console interactively.

Fixed as of https://hg.python.org/jython/rev/e14b67be0bad, per eaaltonen's recommendation to stick to how we document on other underlying OS. It's cross platform! :)

C:\Users\Jim>c:\jython2.7.1-ctrld\bin\jython
Jython 2.7.1b2 (default:e5d62908c495+, Jan 11 2016, 18:21:27)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0_55
Type "help", "copyright", "credits" or "license" for more information.
>>> exit
Use exit() or Ctrl-D (i.e. EOF) to exit
>>>

At which point I used Ctrl-D to exit.

We can look at Ctrl-Z support at some point, but we use JLine 2 with the capabilities it provides, or not.