For those of us who prefer vi over vim there are no good options
for editing Python code. This patch (based on one by rokuyama at
rk.phys.keio.ac.jp) that adds the EXPANDTAB option to nvi (defaults
to off) which adds an expandtab option to nvi.

PR: 235446
Approved by: johans (maintainer timeout, 6 weeks), matthew (mentor, implicit)