fish-shell/fish-shell

The user-friendly command line shell.

Fabian Boehm

@faho

See https://fishshell.com/ for PPAs. With that awkward version (not even 3.1.2) you're probably using Ubuntu, we have ones for that.

rp-karanth

@rp-karanth

Please help with powerline. I am using Ubuntu 20.04.3. I have powerline installed but fish says it isn't. Unable to use any powerline based prompts.

This is output of pip3 show powerline-status

Name: powerline-status
Version: 2.7
Location: /usr/lib/python3/dist-packages/
Requires: 
Required-by:

My config contains

set fish_function_path $fish_function_path "/usr/share/powerline/bindings/fish"
source /usr/share/powerline/bindings/fish/powerline-setup.fish
powerline-setup

echo $fish_function_path
does show /usr/lib/python3/dist-packages/powerline/bindings/fish /usr/share/powerline/bindings/fish

Update:
After performing below step the message that install powerline isnt appearing, but situation remains same.

the /usr/lib/python3/dist-packages/... didnt had fish directory and powerline-setup.fish file; I copied it from /usr/lib/python3/dist-packages/powerline/bindings/fish/powerline-setup.fish using sudo cp

What is that I am missing.

Fabian Boehm

@faho

@rp-karanth You'll have to add the directory the powerline executable is in to your $PATH. The documentation recommends symlinking to your ~/.local/bin, if you've done that you need something like fish_add_path ~/.local/bin.

rp-karanth

@rp-karanth

Well this is odd. I am not seeing the command fish_add_path at all? I remember using it a week ago. What should I do

Emily Grace Seville

@EmilySeville7cfg

How to force complete not to insert space after option insertion? For instance I wanna to write completions for options use : instead of space to separate values: complete --command mcs --old-option warnaserror: --old-option warnaserror+: --description 'Treat warnings as errors'.

Fabian Boehm

@faho

@rp-karanth Upgrade fish. fish_add_path has been available since fish 3.2.0. See https://fishshell.com/ for PPAs if you need them.

@EmilySeville7cfg You currently don't. Fish has a hardcoded list of characters that it won't insert a space after. See #7832.

Emily Grace Seville

@EmilySeville7cfg

Thanks ;)

Kevin

@kn100

Hi, I have a bit of a vague question, but I am mainly looking for places to look to see about this issue. No matter what directory I am on in my system, my system prompt displays "ruby". I have absolutely no idea why, but I am certain I have misconfigured something. Anyone have any suggestions on where to look?

David Adam

@zanchey

@kn100, sounds like something in your prompt? your username or machine name?

schuelermine

@schuelermine:matrix.org

[m]

Is it intentional that the stderr output of things inside brackets isn’t redirected by 2>&1?

$ echo -s x (echo x >&2; echo x) 2>&1 | string length
x
2

schuelermine

@schuelermine:matrix.org

[m]

Can I redirect anyway?

Peter Ammon

@ridiculousfish

Yes redirections do not apply to command substitutions. You'll have to redirect inside the command substitution.

schuelermine

@schuelermine:matrix.org

[m]

Is string collect -N supposed to add newlines?

Screenshot from 2021-11-21 16-47-55.png

Fabian Boehm

@faho

@schuelermine:matrix.org Outside of command substitutions, all string subcommands currently add newlines, yes.

This doesn't affect it inside of one, try echo -n (echo -n 1 | string collect -N).

schuelermine

@schuelermine:matrix.org

[m]

I see

Fabian Boehm

@faho

(this is #3847)

schuelermine

@schuelermine:matrix.org

[m]

Nice to know

schuelermine

@schuelermine:matrix.org

[m]

Screenshot from 2021-11-21 20-24-49.png

Why does fish have a file descriptor for its own file descriptor directory?

Fabian Boehm

@faho

@schuelermine:matrix.org It has an fd for its current working directory.

schuelermine

@schuelermine:matrix.org

[m]

Ah, I see

that makes sense

thank you

Amos Bird

@amosbird

Hello! How can I kill all background jobs in fish?

It seems kill (jobs -p) does the job

Emily Grace Seville

@EmilySeville7cfg

What about to introduce any environment variable to control what completions are allowed to do and what not? For instance when this variable ($fish_disable_smart_complete or another name) is not set nothing changes (for backward compatibility) and otherwise:

--condition complete option is not allowed because potentially it can run for a long time
command substitutions are not allowed in --arguments for the same reason

What do you think about it?

Fabian Boehm

@faho

@EmilySeville7cfg There's no real need for it and it's rather complicated. If completions are too slow, make them faster. We try not to introduce configuration options.

This would also be a global option for all completions, which would break completions that are fast enough just because some others aren't.

expandingman

@expandingman:matrix.org

[m]

hello all... I'm finding it surprisingly difficult to run a detached process and save the PID... I'm trying to do something like eval $cmd &; echo $last_pid but this really, really does not seem to want to work...

Fabian Boehm

@faho

@expandingman:matrix.org Fish can't background functions and builtins, this includes eval.

expandingman

@expandingman:matrix.org

[m]

that wasn't my issue, actually I figured it out: the command I was trying to run was all in one string, I needed to string split it an additional time.

Unfortumately this didn't solve what seems to be a much deeper problem of Xorg absolutely not wanting to do what I'm trying to do here lol

having to use the

set cmd (echo original command here)
$cmd &

pattern is a little awkward, but it works

andrewsh

@andrewsh:matrix.org

[m]

I noticed the new fish breaks compat with mc, is it just me or has someone else seen that?

Fabian Boehm

@faho

@andrewsh:matrix.org It's an mc bug - it tries to extract the first line of the prompt and is overly simplistic in doing so. https://midnight-commander.org/ticket/4258

andrewsh

@andrewsh:matrix.org

[m]

wow, 5 months and no fix?

Fabian Boehm

@faho

You'll have to talk to the mc people about that.

Fabian Boehm

@faho

Sometimes bugs happen, and sometimes nobody gets around to fixing them for a while, especially in a volunteer-driven project.

The only sure way to get a bug fixed now is to do it yourself.

andrewsh

@andrewsh:matrix.org

[m]

yeah, I guess

I have for now downgraded fish back to the version where it works

andrewsh

@andrewsh:matrix.org

[m]

anyway, added the details to the Debian bug report, hopefully the maintainer can have a look and figure something out

@faho: thanks!

Patrick Fong

@PatrickF1

Why do these both output the same thing? According to my understanding of character escapes in single quotes, the \$ should result in no regex backreferencing happening

$ string replace -r '(\w+)\s+(\w+)' '$2 $1 $$' 'left right'
right left $
$ string replace -r '(\w+)\s+(\w+)' '\$2 \$1 $$' 'left right'
right left $

Fabian Boehm

@faho

@PatrickF1 #5474 - unfortunately string replace has a superfluous round of unescaping in the replacement part so you'll have to double up the slashes one more time. There's no great way of fixing it so we've introduced a feature flag until we figure out how to detect it and warn about it.

Patrick Fong

@PatrickF1

Hi @faho , thanks for your reply. Why does string replace do a superfluous round of unescaping for the replacement part?

btw https://fishshell.com/docs/current/language.html#future-feature-flags says "round of escaping", but that should read "round of unescaping right"?

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