extraneous spaces in multi-word function not stripped

[RuijieYu]

Describe the bug

A clear and concise description of what the bug is.

Given that "error make" is a multi-word function:

error make {msg: "hello"}

Steps To Reproduce

Steps to reproduce the behavior:

1. Make a file as above, format it using nufmt

Expected behavior

Expect to remove the one extra space in "error make".

Environment

• nufmt commit: latest main at d7e75a5

Please run rustc --version and paste the result.

[user@system:~]$ rustc --version
rustc 1.94.0 (4a4ef493e 2026-03-02)

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