Don't allow `socket.destroy()` to run twice. The self-destruct sequence itself
is idempotent but it makes the 'close' and 'error' events fire more than once,
which may confuse listeners.
Fixes#2223.
Fixes#2063.
REPLServer.prototype.resetContext:
Reset the line cache
REPLServer.prototype.memory (don't know if I like that name, called from finish)
pushes what cmd's have been executed against it into this.lines
pushes the "tab depth" for bufferedCommands, in this.lines.level
REPLServer.prototype.displayPrompt:
Uses "tab depth" from this.lines.level to adjust the prompt to visually
denote this depth e.g.
> asdf = function () {
… var inner = {
….. one:1
REPLServer.prototype.complete:
Now notices if there is a bufferedCommand and attempts determine locally
scoped variables by removing any functions from this.lines and evaling these
lines in a nested REPL e.g.
> asdf = function () {
… var inner = { one: 1};
… inn\t
will complete to 'inner' and inner.o\t will complete to 'inner.one'
If the nested REPL still has a bufferedCommand it will falls back to the
default.
ArrayStream is a helper class for the nested REPL to get commands pushed to it.
new REPLServer('', new ArrayStream());
Finally added two new REPL commands .save and .load, each takes 1 parameter,
a file and attempts to save or load the file to or from the REPL
respectively.
This is a combination of 20 commits. Their commit messages are preserved
below for the benefit of future generations.
* Adding a shortcut to easily compress/decompress a string of text.
* Making the API consistent. unzip should accept a Buffer for input as well.
* Adding docs.
* Oops, typo.
* Propagate error through the callback.
* Adding zlib from string tests.
* Typo in test.
* Remove 'end' listeners, and join buffers properly instead of joining them
as a string.
* Oops, needs to be rendered to a string.
* Updated test to include multi-byte characters.
* unzip should return a raw Buffer. Updated docs to reflect.
* And finally updating test.
* EventEmitter.destroy() is a bit more customary
* Revert "EventEmitter.destroy() is a bit more customary"
* Renaming internal methods to "buffer" instead of string.
* Remove the 'error' listeners as well.
* @isaacs: spacing/style, and compress duplicate functions into one
* @isaacs: Update docs
* @isaacs: doc style fix
