Info Catalog elisp: Conventions elisp: Introduction elisp: Acknowledgments

elisp: Version Info

 
 1.4 Version Information
 =======================
 
 These facilities provide information about which version of Emacs is in
 use.
 
  -- Command: emacs-version &optional here
      This function returns a string describing the version of Emacs that
      is running.  It is useful to include this string in bug reports.
 
           (emacs-version)
             ⇒ "GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.16)
                        of 2015-06-01"
 
      If HERE is non-‘nil’, it inserts the text in the buffer before
      point, and returns ‘nil’.  When this function is called
      interactively, it prints the same information in the echo area, but
      giving a prefix argument makes HERE non-‘nil’.
 
  -- Variable: emacs-build-time
      The value of this variable indicates the time at which Emacs was
      built.  It is a list of four integers, like the value of
      ‘current-time’ (Time of Day).
 
           emacs-build-time
                ⇒ (20614 63694 515336 438000)
 
  -- Variable: emacs-version
      The value of this variable is the version of Emacs being run.  It
      is a string such as ‘"23.1.1"’.  The last number in this string is
      not really part of the Emacs release version number; it is
      incremented each time Emacs is built in any given directory.  A
      value with four numeric components, such as ‘"22.0.91.1"’,
      indicates an unreleased test version.
 
  -- Variable: emacs-major-version
      The major version number of Emacs, as an integer.  For Emacs
      version 23.1, the value is 23.
 
  -- Variable: emacs-minor-version
      The minor version number of Emacs, as an integer.  For Emacs
      version 23.1, the value is 1.
 

Info Catalog elisp: Conventions elisp: Introduction elisp: Acknowledgments