Problem using H in Emacs

[djsamperi]

Describe the bug With some hacking I managed to get H to start in GNU Emacs, but the output is buffered, so not seen. A typical session in Emacs looks like this x = [r|sqrt(1:5)|] p x :t x x :: MonadR m => ...

So the output from the type query appears, but the output from the p command does not. If the program is now terminated with Ctrl-C the lost output of the p command appears, so it was clearly buffered when it shouldn't be.

To Reproduce Under Windows, I put the following in .ghci set -fno-ghci-sandbox :set -XDataKinds :set -XGADTs :set -XPartialTypeSignatures :set -XOverloadedLists :set -XQuasiQuotes :set -XScopedTypeVariables :set -XTemplateHaskell :set -XViewPatterns

:set -i/w/dev/github/HaskellR/H/.stack-work/dist/8a54c84f/build/H/autogen

The last set is needed to prevent Paths_H autogen module from not being found.

Now cd to HaskellR, run some trivial command to get Emacs Haskell mode to start, and type into Haskell mote prompte:

:m +Language.R.Instance :m +H.Prelude.Interactive as H.Prelude

initialize defaultConfig

Expected behavior H mode should work like ghci mode with extra features for R.

Environment

• Windows 11
• 1.0.0 of HaskellR

Additional context Initially I tried using this in .emacs.d/init.el: (setq haskell-program-name "stack exec H")

This didn't work, perhaps because none of the expected output was reaching the terminal because of buffering.