Tramp ssh hosts completion
reddit / emacs

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AsterOps · 2022-04-06 10:54

Hi, I am using custom structure of `~/.ssh/config` which contains only
these lines:

    Include conf.d/*

and keep seperate file for each "site"

    tree ~/.ssh/conf.d
    conf.d/
    ├── home
    ├── lab
    ├── X
    └── Y

host entries in that files are ignored by tramp completion, because it
looks for them in `~/.ssh/config` which in my example is empty. I
found in the [docs](https://www.gnu.org/software/emacs/manual/html_nod
e/tramp/Customizing-Completion.html) that there is `tramp-completion-
function-alist` variable which defines which files parse foreach
method but I am not sure about overwriting them. Pls help :)

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Phil-Hudson · 2022-04-06 15:29

I think you need to either advise or replace function `tramp-parse-
sconfig` to do what it currently does for ~/.ssh/config for each file
identified by an `Include` directive.

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Phil-Hudson · 2022-04-06 15:35

Come to think of it, this seems like it would be a useful TRAMP
enhancement. You should probably raise an RFE with the dev list: `M-x
report-emacs-bug`.

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AsterOps · 2022-04-06 19:52

Hey, thx for your answers. I found solution by myself. I've added to
my tramp configuration following lines

```
(use-package tramp
  :config
  (add-to-list 'tramp-completion-function-alist
               '("ssh"
                 (tramp-parse-sconfig "~/.ssh/conf.d/home")
                 (tramp-parse-sconfig "~/.ssh/conf.d/lab")
                 (tramp-parse-sconfig "~/.ssh/conf.d/X")
                 (tramp-parse-sconfig "~/.ssh/conf.d/Y"))))
```
This will add to `tramp-completion-function-alist` variable my
location where I store my ssh hosts and then completion works fine :)

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worthless-trash · 2022-04-07 22:28

I think that this is worth filing as a bug, you've got the setup and
the domain knowledge to do this.

Edit: thank you for sharing the workaround.