ssh completion is crazily spewing junk to my stdout/stderr

[mcepl]

Whenever I want to make ssh connection ble.sh spews a ton of junk to my console. See

I don’t even understand what ble.sh is trying to achieve here, but I don’t like it. How can I switch it off?

[akinomyoga]

This is a bug of bash-completion, which was fixed in 2.12 by scop/bash-completion#889.

Which version of bash-completion do you use? This is actually included in the result of ble summary, and users are instructed to provide the result of ble summary by the issue template. Please use the GitHub issue to report an issue next time.

$ ble summary

I don’t even understand what ble.sh is trying to achieve here, but I don’t like it. How can I switch it off?

You should read Section "Error of external completion settings" in "Reporting Issue".

[mcepl]

milic:python39 () $ ble summary
GNU bash, version 5.2.37(1)-release (x86_64-suse-linux) [openSUSE Tumbleweed]
ble.sh, version 0.4.0-devel4+adf53ed3 (noarch) [git 2.49.0, GNU Make 4.4.1, GNU Awk 5.3.2, API 4.0, PMA Avon 8-g1, (GNU MPFR 4.2.2, GNU MP 6.3.0)]
bash-completion, version 2.12.0 (hash:480ffcc6a751e55621ec526eb5dea7a0d86d9e72, 17877 bytes) (noarch)
fzf key-bindings, (hash:8b0ef76c65a55e74cde19e726bf076349e680fe3, 5635 bytes) (noarch) (integration: on)
fzf completion, (hash:48f1a547dc867990b3765881ce374575acd8c9d6, 18422 bytes) (noarch) (integration: on)
locale: LANG=cs_CZ.utf8 LC_CTYPE=cs_CZ.UTF-8
terminal: TERM=xterm-256color wcwidth=16.0-west/16.0-2+ri, foot:12203 (1;012203;0)
options: +autocd +extglob +failglob +globstar +histappend -hostcomplete +inherit_errexit +login_shell
milic:python39 () $ 

[mcepl]

milic:python39 () $ complete -p ssh
complete -o bashdefault -o default -F _fzf_complete_ssh ssh
milic:python39 () $  (shopt -s extdebug; declare -F _fzf_complete_ssh)
_fzf_complete_ssh 479 /usr/share/fzf/shell/completion.bash
milic:python39 () $ rpm -qif /usr/share/fzf/shell/completion.bash
Name        : fzf
Version     : 0.62.0
Release     : 1.1
Architecture: x86_64
Install Date: čt 29. května 2025, 11:31:04
Group       : Productivity/File utilities
Size        : 4935357
License     : MIT
Signature   : RSA/SHA512, út 6. května 2025, 16:52:52, Key ID 35a2f86e29b700a4
Source RPM  : fzf-0.62.0-1.1.src.rpm
Build Date  : po 5. května 2025, 23:31:56
Build Host  : reproducible
Packager    : https://bugs.opensuse.org
Vendor      : openSUSE
URL         : https://github.com/junegunn/fzf
Summary     : A command-line fuzzy finder
Description :
fzf is an interactive Unix filter for command-line that can be used with any list; files,
command history, processes, hostnames, bookmarks, git commits, etc.
Distribution: openSUSE Tumbleweed
milic:python39 () $ 

I guess this is the completion https://github.com/junegunn/fzf/blob/master/shell/completion.bash

[akinomyoga]

Thanks for the additional information.

• Does the problem reproduce when the fzf settings are disabled?
  • If yes, when the fzf settings are disabled, what is the result of the following commands (Please replace <comp_func_name> with the one obtained by complete -p ssh).

    # In a session without fzf settings
    
    $ complete -p ssh
    $ (shopt -s extdebug; declare -F <comp_func_name>)

  • If no, what is the result of the following command after seeing the error messages are shown in a session with the fzf settings enabled?

    # In a session with fzf settings
    
    $ declare -p _fzf_orig_completion_ssh

[mcepl]

With fzf import commented out in ~/.config/blesh/init.sh ssh completion works as it should:

milic:~ $ ssh ostrich
Prosím, zadejte heslo pro SSH klíč
  SHA256:i509Fdt6p9OBuFBCPkvRpo8Rin2Wt9LjsEw6/u5Azqk
  (/home/matej/.ssh/id_rsa)
Heslo: 
Last login: Fri May 30 09:43:52 2025 from 10.100.51.194
Have a lot of fun...
mcepl@newstrich:~> logout
Connection to ostrich.suse.de closed.
milic:~ $ complete -p ssh
complete -F _comp_cmd_ssh ssh
milic:~ $ (shopt -s extdebug; declare -F _comp_cmd_ssh)
_comp_cmd_ssh 295 /usr/share/bash-completion/completions/ssh
milic:~ $ rpm -qf /usr/share/bash-completion/completions/ssh
bash-completion-2.12.0-4.1.noarch

[akinomyoga]

Thanks for the results. I could reproduce the issue with the fzf completion. Actually, I can reproduce the problem even without ble.sh but only with the fzf completion setting and shopt -s failglob when I attempt a TAB completion for the ssh command. This is clearly a bug in the fzf completion. I submitted a patch to the upstream fzf project: junegunn/fzf#4405.