master a9b393c773 1/2: Include development data in --version output

[Lars Ingebrigtsen]

branch: master
commit a9b393c77350cc177952008707781dd97341a83a
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Include development data in --version output
    
    * src/emacs.c (main): Include development into in --version output
    (bug#38657).
---
 src/emacs.c | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/src/emacs.c b/src/emacs.c
index 056cebb04d..fed525f8bf 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -1449,14 +1449,29 @@ main (int argc, char **argv)
          version = emacs_version;
          copyright = emacs_copyright;
        }
-      printf (("%s %s\n"
-              "%s\n"
+      printf ("%s %s\n", PACKAGE_NAME, version);
+      {
+       Lisp_Object rversion =
+         Fsymbol_value (intern_c_string ("emacs-repository-version"));
+       Lisp_Object rbranch =
+         Fsymbol_value (intern_c_string ("emacs-repository-branch"));
+       Lisp_Object rtime =
+         Fsymbol_value (intern_c_string ("emacs-build-time"));
+       if (!NILP (rversion) && !NILP (rbranch) && !NILP (rtime))
+         printf ("Development version %s on %s branch; build date %s.\n",
+                 SSDATA (Fsubstring (rversion, make_fixnum (0),
+                                     make_fixnum (12))),
+                 SSDATA (rbranch),
+                 SSDATA (Fformat_time_string (build_string ("%Y-%m-%d"),
+                                              rtime, Qnil)));
+      }
+      printf (("%s\n"
               "%s comes with ABSOLUTELY NO WARRANTY.\n"
               "You may redistribute copies of %s\n"
               "under the terms of the GNU General Public License.\n"
               "For more information about these matters, "
               "see the file named COPYING.\n"),
-             PACKAGE_NAME, version, copyright, PACKAGE_NAME, PACKAGE_NAME);
+             copyright, PACKAGE_NAME, PACKAGE_NAME);
       exit (0);
     }