cmake-format not working as cmake formatter

[steckes]

Summary

I tried to use cmake-format as formatter for cmake files.
Instead of formatting, the whole content of the file gets deleted.
I tried adding -i as argument for in-place formatting, what does not help.

Here my config:

[[language]]
name = "cmake"
auto-format = false
formatter = { command = "cmake-format", args = ["-i"] }

Do you see something I messed up?
When I call cmake-format -i CMakeLists.txt in the commandline it works.

Reproduction Steps

I tried this:

1. hx CMakeLists.txt
2. :format

I expected this to happen:

File gets formatted

Instead, this happened:

Content gets deleted

Helix log

Logfile stays empty

Platform

Linux

Terminal Emulator

alacritty 0.13.2

Installation Method

pacman

Helix Version

helix 24.3

[the-mikedavis]

External formatters work by piping the document through the formatter command. I believe clang-format -i is formatting the project instead, right? So you'll need to run clang-format in a way that takes the document as stdin, for example zig fmt --stdin for Zig.

[steckes]

Thanks!
I tried to reproduce what helix might do, but when I run cmake-format | cat CMakeLists.txt it at least prints the correctly formatted code in the shell..

[the-mikedavis]

It should be cat CMakeLists.txt | cmake-format