scopatz/xonsh

xonsh is a Python-powered, cross-platform, Unix-gazing shell language and command prompt

halloleo

@halloleo

@anki-code Great resource! Cool! Do you think it is worth it to add the sheet to the xonsh doco?

4 replies

anki-code

@anki-code

:new: New xonsh landing page now available to touch on https://xonsh-landing.github.io/ :tada:

halloleo

@halloleo

Hi all, I have a strange problem: when a prompt formatter field print its information directly because it sends escape sequences to the terminal emulator (example: the builtin vte_new_tab_cwd field) then the characters of the whole prompt don't get send in the right order:
What is printed directly comes before everything else regardless of the order in $PROMPT. However I need to send some escapes after the normal prompt characters. How can I do this?

Andrés E. Castaño Cardenas

@starclouded_gitlab

Hi, currently I am in version 0.9.24 but I am still getting a warning, "NO_COLOR is deprecated and should be replaced with RESET.

7 replies

'any suggestion?

Kermit Alexander II

@DangerOnTheRanger

hey y'all, getting this error upon starting a shell/whenever I try to run xontrib load prompt_ret_code (xonsh --version reports 0.9.24): https://gist.github.com/DangerOnTheRanger/4bad35343d3cc99aa5b47538b116842b
this happened right after I upgraded my system python from 3.8 to 3.9, so that might have something to do with it

4 replies

Povilas Balciunas

@povilasb

Hey guys I have this

# Fail fast, a.k.a set -e
$RAISE_SUBPROC_ERROR = True

exists = bool($(grep "non-existant" file.txt))
if exists: ...

Now this almost works, except that grep returns 1 when it doesn't find the pattern and xonsh will terminate with error due to RAISE_SUBPROC_ERROR set.
I want this to be set in most cases and still be able to rescue myself in some specific cases.
So I do

$(grep "non-existant" file.txt || true)

But then get a SyntaxError due to illegal || use.
So bash logical operators are not allowed? :/

3 replies

Noorhteen Raja NJ

@jnoortheen

Hi people
anyone has workaround for this xonsh/xonsh#4039

halloleo

@halloleo

How do I get a listing of the source code of a function I have defined in the xonsh REPL? I thought which -a my_func does this, but it doesn't.

marcusatiliusregulus

@marcusatiliusregulus

@povilasb are you sure its not complaining about your "true" not being capitalized (True)? ps im still very new to xonsh

1 reply

jan Swedneck

@swedneck:feneas.org

[m]

hey is there an easy way to write to files natively?

i know in normal python scripts i'd do something like with open('file.txt', 'w') as file: file.write('foobar')

but is there some shorter way of doing this in xonsh?

Daniel Shimon

@daniel-shimon

You could do echo -n @(data) > /path

Luc Ritchie

@wlritchi

What's the cleanest xonsh equivalent to bash's $! to get the PID of the most recent background job? I'm hoping for a simple equivalent of

long_running_process &
pid=$!
do_something_else
kill $pid

4 replies

Tim Jones

@TimJones

Hi all! I'm just getting started with xonsh, and I usually like the solarized theme for working, but something seems to be up with the colours in xonsh...

I'm using Konsole also set to the Solarized-dark theme, not sure if there is a conflict there or I'm not setting the theme right or something, but it doesn't match the colors of solarized at all

I'd be happy to submit an issue (a PR if I find the time) but I'd just like to know if this isn't a PEBKAC error first ;)

1 reply

Asaf Fisher

@AsafFisher

https://gist.github.com/5b69a42027c62ead3de565eed49ce8a9

Started to import all the aliases from zsh to xonsh...

btw lets make a discord server? xD

Asaf Fisher

@AsafFisher

Btw i noticed that we do not compile and cache imports on xsh files.. this cause a large time panalty if you import stuff on xonshrc... maybe we should possibly

1 reply

make an “include” import like mechanisem for the xonshrc that just appends a file: include xonsh_aliases

Alternative is to compile every import to pyc

Chi Nguyen

@cnfolio

any suggestions on how to convert bash export PATH="/home/linuxbrew/.linuxbrew/bin:$PATH" to xonshrc setting? I tried using methods on https://xon.sh/bash_to_xsh.html and kept getting error messages about "can only concatenate str (not "list")" or "maximum recursion depth exceeded in comparison"; thx

Chi Nguyen

@cnfolio

found path literals on https://xon.sh/tutorial.html; cheers

1 reply

Asaf Fisher

@AsafFisher

https://github.com/AsafFisher/ohmyxonsh # Aliases to xonsh

Matthias Bussonnier

@Carreau

Hey all, new machine with branch new conda and xonsh, conda active fails with:

CommandNotFoundError: Your shell has not been properly configured to use 'conda activate'.
To initialize your shell, run

    $ conda init <SHELL_NAME>

Currently supported shells are:
  - bash
  - fish
  - tcsh
  - xonsh
  - zsh
  - powershell

See 'conda init --help' for more information and options.

IMPORTANT: You may need to close and restart your shell after running 'conda init'.

I thought that was fixed ?

Matthias Bussonnier

@Carreau

seem I just had to be explicit with conda init xonsh....

Jim Lynch

@jwlynch_gitlab

is there a difference between login shell and non-login shell? if yes, what are the differences? (do login shells read a different startup file? or, is there a variable set true/false in a login shell?

Matthias Bussonnier

@Carreau

Login shell do behave a bit differently and read I believe the .xxx_profile in addition to .xxxxrc or vice versa. You can read https://unix.stackexchange.com/questions/38175/difference-between-login-shell-and-non-login-shell

Most shell have an option to start them as (non)-login shell.

Jim Lynch

@jwlynch_gitlab

right, sounds like bash does that.... do the docs for xonsh document this same behavior?

halloleo

@halloleo

@jwlynch_gitlab @Carreau From what I know xonsh has only the startup files ~/.xonshrc and /etc/xonshrc.

Jim Lynch

@jwlynch_gitlab

I think that;s what the man page says too... can you confirm that xonsh will also read .xonsh_profile if it's a login shell?

if it does, that makes it a documentation bug... if it does not, maybe it should

jan Swedneck

@swedneck:feneas.org

[m]

uh, what about $XDG_CONFIG_HOME/xonsh/rc.xsh ?

halloleo

@halloleo

True, doco states "XDG compliance". Haven't tried it though.

Jim Lynch

@jwlynch_gitlab

@halloleo yeah, as far as I can tell from the docs, looks like that to me too... but that brings me back to the question: what's the difference between a xonsh login shell and a non-login shell?

halloleo

@halloleo

@jwlynch_gitlab I think a non-login xonsh shell (e.g. from a subprocess line like xonsh my_awsome_script.xsh) will not read the .xonshrc, whereas xonsh -l my_awsome_script.xsh will do so. However I haven't tested this explicitly.

Jim Lynch

@jwlynch_gitlab

good theory, we can both check that

so far, I know: running xonsh and xonsh -l both run that script

what I don't know for sure, is whether running xonsh without -l is or is not a login shell

Jim Lynch

@jwlynch_gitlab

maybe there's some kind of thing that could be tested to see if it's a login shell or not, like a variable or some kind of function call

otherwise I don't (at all) understand the difference between login shell and non, and it's starting tl look like the whole concept is not useful

Jim Lynch

@jwlynch_gitlab

don't get me wrong, I like xonsh a lot, this is just one aspect that is either not implemented properly, or I don't understand the proper implementation that it does have

Jim Lynch

@jwlynch_gitlab

if xonsh can't inform a xonsh script of whether it's a login shell or not, does that indicate that the whole concept of login/non-login shells is not needed in xonsh?

Jim Lynch

@jwlynch_gitlab

another thing, ctrl-Z / bg /fg is not working properly

Jamie Bliss

@AstraLuma

today in $DAYJOB, someone found the pycon 2016 talk, and we got to talking about how to use xonsh on old-ubuntu (py3.5) blades without shared logins/homedirs

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