Using tramp with "RemoteCommand"

[Daniel Gomez]

I would like to tramp into a compute node of an HPC cluster.
That requires an ssh connection to a login node and then using `srun` to 
request an interactive session.
If using a terminal, all I need is to set up the following on my 
.ssh/config, and then `ssh computenode` gets me directly to the compute 
node:

```
Host computenode
     User user
     HostName loginnode.edu
     IdentityFile ~/.ssh/id_loginnode
     RequestTTY yes
     RemoteCommand srun --partition=partition --account=account --gpus=1 
 --pty /usr/bin/zsh
```

However, when connecting via TRAMP this doesn't work, because 
[apparently TRAMP cannot be used with "RemoteCommand".][1]

**Question: How can I use TRAMP with RemoteCommand, or how can I have 
Tramp connect directly to an HPC compute node with `srun`?**

Note: [a similar question was asked at the Emacs Stack Exchange][2] with 
a proposal to connect to an HPC by defining a "qsub" tramp-method; but I 
tried to define something similar for "srun" and it does not seem to 
work (but if anyone has a counter-example I'd be happy to give it a 
try).


  [1]: 
https://www.gnu.org/software/emacs/manual/html_node/tramp/Remote-shell-setup.html
  [2]: 
https://emacs.stackexchange.com/questions/12899/can-emacs-use-tramp-to-run-in-an-interactive-session-on-a-remote-hpc-node

If anyone has any suggestions or other approaches that would work, I'd 
be happy to test them out.
Ideally I would like to be able to use `dired` and `run-python` on the 
compute node, just like I would on a normal remote development workflow.

Regards,
Daniel