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version-spec.txt

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  1. $Id$
    2. 

  2. 

  3. HOW TOR VERSION NUMBERS WORK
    4. 

  4. ============================
    5. 

  5. 

  6. The Old Way
    7. 

  7. -----------
    8. 

  8. 

  9. Before 0.1.0, versions were of the format:
    10. 

  10.     MAJOR.MINOR.MICRO(status(PATCHLEVEL))?(-cvs)?
    11. 

  11. where MAJOR, MINOR, MICRO, and PATCHLEVEL are numbers, status is one
    12. 

  12. of "pre" (for an alpha release), "rc" (for a release candidate), or
    13. 

  13. "." for a release.  As a special case, "a.b.c" was equivalent to
    14. 

  14. "a.b.c.0".  We compare the elements in order (major, minor, micro,
    15. 

  15. status, patchlevel, cvs), with "cvs" preceding non-cvs.
    16. 

  16. 

  17. We would start each development branch with a final version in mind:
    18. 

  18. say, "0.0.8".  Our first pre-release would be "0.0.8pre1", followed by
    19. 

  19. (for example) "0.0.8pre2-cvs", "0.0.8pre2", "0.0.8pre3-cvs",
    20. 

  20. "0.0.8rc1", "0.0.8rc2-cvs", and "0.0.8rc2".  Finally, we'd release
    21. 

  21. 0.0.8.  The stable CVS branch would then be versioned "0.0.8.1-cvs",
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  22. and any eventual bugfix release would be "0.0.8.1".
    23. 

  23. 

  24. The New Way
    25. 

  25. -----------
    26. 

  26. 

  27. After 0.1.0, versions are of the format:
    28. 

  28.    MAJOR.MINOR.MICRO(.PATCHLEVEL)(-status_tag)
    29. 

  29. The stuff in parenthesis is optional.  As before, MAJOR, MINOR, MICRO,
    30. 

  30. and PATCHLEVEL are numbers, with an absent number equivalent to 0.
    31. 

  31. All versions should be distinguishable purely by those four
    32. 

  32. numbers. The status tag is purely informational, and lets you know how
    33. 

  33. stable we think the release is: "alpha" is pretty unstable; "rc" is a
    34. 

  34. release candidate; and no tag at all means that we have a final
    35. 

  35. release. If the tag ends with "-cvs", you're looking at a development
    36. 

  36. snapshot that came after a given release.  If we *do* encounter two
    37. 

  37. versions that differ only by status tag, we compare them lexically.
    38. 

  38. 

  39. Now, we start each development branch with (say) 0.1.1.1-alpha.  The
    40. 

  40. patchlevel increments consistently as the status tag changes, for
    41. 

  41. example, as in: 0.1.1.2-alpha, 0.1.1.3-alpha, 0.1.1.4-rc 0.1.1.5-rc,
    42. 

  42. Eventually, we release 0.1.1.6.  The next patch release is 0.1.1.7.
    43. 

  43. 

  44. Between these releases, CVS is versioned with a -cvs tag: after
    45. 

  45. 0.1.1.1-alpha comes 0.1.1.1-alpha-cvs, and so on.
    46. 

  46.