Bash does not enable recursive ** globbing by default; shopt -s globstar is required. As written, ./**/*OptionsSetup.cs is treated as ./*/*OptionsSetup.cs and only matches files exactly one directory below the repo root. OptionsSetup.cs files in deeper paths (e.g. ./src/Sentry/Foo/BarOptionsSetup.cs) will NOT be excluded and will be reformatted by the hook, contradicting the documented intent to exclude them. Additionally, if no files match the pattern, bash passes the literal unexpanded string to dotnet format, which may also misbehave.