Table of Contents

1. ob-pwsh
   1. Version
   2. Simple code block running powershell (via a global dotnet core pwsh)
   3. Powershell is fantastically self documenting
   4. Oh hold on, what's that? It supports variables? Oh shit!
   5. Cross language harmonizing barbershop quartet
2. Inclusion
3. Work In Progress
   1. Ctrl-C Ctrl-C Code inderect buffer thingy isn't working
   2. Sessions
   3. Post it to org mailing list
   4. Melpa package
   5. Inclusion in spacemacs powershell layer
   6. Ok, this is dumb but my html exports is broken. Some error that might have to do with parinfer?
   7. Better return object format

ob-pwsh

Org for powershell core! I wrote it!

Based on xchrishawk's ob-racket plugin

Fair warning - this is super raw

Version

(org-entry-get nil "version" t)

0.1

Simple code block running powershell (via a global dotnet core pwsh)

Get-Location | foreach { "A path: " + $_.Path }

A path: /Users/gmauer/code/ob-powershell

Powershell is fantastically self documenting

For this next bit, I'd want to use echo. But I want to avoid bashisms for the purpose of this demo. I know it's an alias in powershell, so let's look that up

get-alias echo


CommandType     Name                                               Version    S
                                                                              o
                                                                              u
                                                                              r
                                                                              c
                                                                              e
-----------     ----                                               -------    -
Alias           echo -> Write-Output

Pretty cool huh? Now we can use Write-Output in the future.

Oh hold on, what's that? It supports variables? Oh shit!

Yup, variables. Here's a value:

987

And we can reference it by name in this code block

Write-Output "A foo value, larries and gentlemen: $foo"

A foo value, larries and gentlemen: 987

Cross language harmonizing barbershop quartet

return $numerator / 7

And now I can use the results of that function in this python code block with the :var division_result=divide-it(numerator=213) header arg

print(f'{division_result} + {another_num} is {division_result + another_num}')

30.4285714285714
 +   987
 is 30.4285714285714
  987

Inclusion

Add to load path so tha we can require this

(add-to-list 'load-path "/Users/gmauer/code/ob-powershell/src/")

And load it

(load-file 'ob-pwsh)

And now its loaded, you can go run the above.

The default powershell command run is

org-babel-pwsh-command

If you installed this correctly the above should display something like "pwsh".

You should make sure its installed in a location visible to the default shell, or you can set it to another value.

Work In Progress

TODO Ctrl-C Ctrl-C Code inderect buffer thingy isn't working

It thinks that there is something called pwsh-mode but there isn't, it's powershell-mode

TODO Sessions

This will require digging into how eg ob-python works

TODO Post it to org mailing list

TODO Melpa package

TODO Inclusion in spacemacs powershell layer

TODO Ok, this is dumb but my html exports is broken. Some error that might have to do with parinfer?

TODO Better return object format

Rather than outputting strings, convert powershell objects returned as value to elisp structures to take advantage of the fact tha we have a runtime