Clean up some style (shortening names, shortening lines), rename _isspace to xisspace (shouldn't start with underscore), make a function that always returns 1 to have a void return.
Clean up some style (shortening names, shortening lines), rename _isspace to
xisspace (shouldn't start with underscore), make a function that always returns
1 to have a void return.

kristapsdz/lowdown,kristapsdz/lowdown,kristapsdz/lowdown