Issues with writing files (v0.1-pr2) #2

In general it doesn't seem to be possible to write files, and there are a few different failure modes.

In all cases I'm launching EviL without a .rc file.

Invoking evil with no arguments, entering some text, and then trying to exit with "ZZ":
Screen is filled with random pixel blocks in various colours.

Invoking evil with no arguments, entering some text, and then trying to save with ":w test.txt"
No errors are reported. ":q" doesn't exit EviL. ":q!" exits. No file has been produced.

Invoking evil with a non-existing file name produces an expected error that the file cannot be found.
After inserting some text:
":w" produces a brief "Writing.." message.
":q" exits EviL
File has been created, but contains garbage when viewed using the Browser.

Invoking evil with an existing file loads it as expected.
After making a minor change to the text:
":w" produces a brief "Failed to create file (Errno: 7)" message along with a beep and a border flash, then the Next reboots.
File is unchanged.

Invoking evil with an existing file loads it as expected.
After making a minor change to the text:
":w newfile.txt" produces a brief "Failed to create file (Errno: 7)" message along with a beep and a border flash, then the Next reboots.
"newfile.txt" has not been created.