elpy -> company-mode -> tramp interaction

[kordosky]

While coding in emacs with elpy enabled I've found that I get a freeze of a few minutes after typing

os.chdir("/ho

I'm just trying to change to my home directory. After the third character emacs freezes. It is not sensitive to ctrl-G. This happens the first time in an emacs session. It also happens with other function calls (e.x. os.stat()). The /xx also does not have to be the start of a valid path.

What appears to be happening is that elpy is using company to complete the text string. Company seems to interpret the /xx as something tramp should try to handle and passes it to tramp. Tramp ends up calling ssh. The most relevant part of the backtrace seems to be:

Sorry for the image. There are some unicode characters in the text that screw up markdown.

My questions are: (1) Is if this is the desired behavior from the standpoint of company-mode? (2) Is there something about the way elpy is using company-mode that could be at issue? (3) Can anyone duplicate the issue? Perhaps it has to do with my tramp or ssh setups (both are pretty unremarkable). Duplication is simple:

`
import os
os.chdir("/xx

`

[kordosky]

Sorry, left off the versions:
Company 0.9.12
Elpy 1.33.0
Tramp 2.2.11-24.5
Emacs 24.5.1

[dgutov]

What if you try to reproduce it without company?

M-x eshell, type cd /ho, abort company popup if it comes up, then press C-M-i.

[dgutov]

Emacs 24.5.1

In any case, though, you might want to try a newer Emacs first. This version is 5 years old.

[kordosky]

Thanks,
I tried "M-x eshell cd /ho"
it didn't freeze (I could step back a character) and then C-M-i produced "cd use-package-/:hook"

[dgutov]

Hmm, what if you do this instead?

• C-x C-f
• Input /ho
• Press TAB

All of the above with the default completion engine, preferably. No Ido/Ivy/Helm/etc.

[kordosky]

Emacs 26 doesn't have the error, but I think it's only because elpy throws errors on initialization and doesn't run correctly. I don't get any command completion. The errors are:
'
Error (use-package): elpy/:init: Symbol’s value as variable is void: xref-location-marker
Error (use-package): elpy/:catch: Symbol’s value as variable is void: xref-location-marker
'
Also, when I "list-packages" and click on elpy it states emacs-24.4 as a dependency.

[dgutov]

Something to report, maybe? But it shouldn't be hard to fix: xref-location-marker is in Emacs 25+. It's a function though, not a variable.

Also, when I "list-packages" and click on elpy it states emacs-24.4 as a dependency

That just means it's the minimum version.

[dgutov]

Nothing further seems likely to happen here, so closing.