code.delx.au - gnu-emacs/blob - admin/notes/versioning

   1 GNU EMACS VERSIONING                                   -*- org -*-
   2
   3 Ref: http://lists.gnu.org/archive/html/emacs-devel/2014-09/msg00872.html
   4
   5 Emacs version numbers have the form
   6
   7   major.minor[.devel].build
   8
   9 "build" increments each time Emacs is built in the same location
  10 (without cleaning) and isn't really part of the version.
  11
  12 Bugfix releases increase "minor" by 1.
  13 Non-bugfix releases increase "major" by 1, and reset "minor" to 1.
  14 (The division between bugfix and non-bugfix has not always been clear
  15 historically.)
  16
  17 Unreleased (development) versions have an extra "devel" component.
  18 This is a fairly meaningless number that may be unchanged for a long time.
  19 It is normally 50.
  20
  21 After we cut the release branch, we’ll make pretest and release
  22 candidate (RC) releases.  For pretest releases, the "devel" component
  23 changes to 90, 91, ...  When the first RC release is made, this
  24 component is removed.  Normally, there is one RC release, unless an
  25 unexpected last-minute problem occurs.
  26
  27 The development version for a new major release has "minor" = 0.
  28 The development version for a new minor release has "minor" = that of
  29 the previous release.
  30