flag: use four spaces before tab, not three

Four spaces is what works well for both 4- and 8-space tab stops.

Screen with fixed-width font and 4-space tab stops:
http://imgur.com/lps5Lbb

Change-Id: I7d2b813d674c3e0a68f79d63bc5d5ec5bd4f87bb
Reviewed-on: https://go-review.googlesource.com/7503
Reviewed-by: Rob Pike <r@golang.org>
2 files changed
tree: 6ef777951607ae3a9b8659cc528e87b4e6767d34
  1. api/
  2. doc/
  3. lib/
  4. misc/
  5. src/
  6. test/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. CONTRIBUTING.md
  11. CONTRIBUTORS
  12. favicon.ico
  13. LICENSE
  14. PATENTS
  15. README.md
  16. robots.txt
README.md

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