Pipes don't work on Windows

[edemaine]

What happened?

On Windows, hunk does not accept keyboard input when fed data via stdin, such as a patch like so:

git diff | hunk patch -

Steps to reproduce

On Windows, in a repository with a working-tree diff:

npm install -g hunkdiff
git diff | hunk patch -

or from source:

git diff | bun run path\to\hunk\src\main.tsx -- patch -

Then try to interact with the TUI, e.g. arrow keys / scrolling / quit.

Expected behavior

Piped patch input should behave like normal interactive Hunk sessions on Windows (e.g. hunk diff). Instead, keys don't work.

Version

Current main / npm hunkdiff@0.15.1.

Solution explored

Hunk should be able to consume patch text from stdin while separately reading interactive input from the Windows console, ideally by opening:

fs.openSync("\\\\.\\CONIN$", "r+")

and wrapping that fd in new tty.ReadStream(fd). This is the Windows analog of opening /dev/tty as Hunk currently does, and it works on Node; see nodejs/node#63856

Unfortunately, this doesn't currently work in Bun: setRawMode fails. I wrote oven-sh/bun#32153 to fix it. If merged, I'll submit a PR to Hunk. Until then, even a correct Hunk-side CONIN$ implementation may still fail under Bun when enabling raw mode on the reopened non-stdin TTY.

[benvinegar]

Thanks @edemaine. Here's hoping that Bun patch gets accepted.