If `kill-emacs` is called while the kernel process or client channel processes
are still alive, the process sentinels do not run and thus the cleanup of the
clients and managers does not happen. Thus we need to explicitly do this
cleanup when `kill-emacs` is called.
This replaces the behavior of the `:input-reply` message
type. A kernel sends an `:input-request` to the frontend
and the client sends an `:input-reply`.
* Define the `jupyter-lang` method context specializer that
specializes against the kernel language of
`jupyter-current-client`
* Remove the kernel support API
* Replace the kernel support API with methods that can be
specialized using the `jupyter-lang` context specializer.
* Rename `jupyter-code-context-at-point` to `jupyter-code-context`
* Use `cl-defmethod` and specializers to handle the
different kinds of contexts
* Move the newly defined code context methods to their
appropriate locations
* Define new method `jupyter-kernel-info` which takes care
of caching the result of a kernel info request. All
access of the kernel info plist should happen through
this method.
* Do not return the kernel info plist in
`jupyter-start-new-kernel`, callers should access the
kernel info through `jupyter-kernel-info`
If Emacs crashes while a channel subprocess is still alive, the subprocess is
not cleaned up properly. Fix this by creating a file lock in the parent Emacs
process, then ensure that the file lock exists in the channel subprocess. If it
doesn't exist anymore, the channel subprocess will exit.
Since IDs of requests are generated in the parent Emacs process, there is no
need to pass back the ID of a request from the child process that send
messages.
- Add the method `jupyter-generate-request` to allow subclasses to initialize
their own request objects with extra fields in addition to those of
`jupyter-request`.
- Add the method `jupyter-drop-request` to allow subclasses to do any cleanup
once a request is complete.
- Add missing namespace to sha256 function
- Any function defined should have a `jupyter-` prefix
- Remove `cl-lib` dependency in `jupyter-messages.el`
- Include `subr-x` in `jupyter-base.el`
- Use `tramp-file-name-user` instead of `tramp-file-name-real-user` since the
latter is missing in Emacs 26
- Allow specifying a msg-id before a call to `jupyter-send`
- This avoid sending a message to the browser displaying the widgets on every
message send to the kernel. The previous implementation generated a new ID
without allowing the caller to pass one in.
- Simplify message polling by sending received messages from the kernel to the
parent Emacs process at the moment of arrival.
