docs: clarify built-in name conflicts#978

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sanmaxdev:docs/builtin-name-conflicts

sanmaxdev commented Jul 6, 2026

Summary

Document how built-in function names can shadow environment variables with the same name.
Point readers to $env, expr.DisableBuiltin, and expr.DisableAllBuiltins for the supported workarounds.

Testing

go test ./...
git diff --check

Closes #905


          docs: clarify built-in name conflicts

0e4c3a7

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