Migrate RUBY_VERSION/RUBY_DESCRIPTION to Git

from Subversion.

This behavior is tentative and not discussed well. The point of
discussion will be just the length of commit hash, and I thought we
should include this kind of change in 2.7.0-preview1 release even before
the length is fixed yet.

Let's discuss that afterwards and fix it later as needed. Naruse
suggested that length=10 is very unlikely to cause conflict, and thus
it's used by email notification and rubyci now. This behavior is in
favor of that for now.

1 files changed, 1 insertions, 1 deletions

diff --git a/tool/file2lastrev.rb b/tool/file2lastrev.rb
index 8d68da9f88..0ee22da712 100755
--- a/tool/file2lastrev.rb
+++ b/tool/file2lastrev.rb
@@ -54,7 +54,7 @@ parser.parse! rescue abort "#{File.basename(Program)}: #{$!}\n#{parser}"
   when :revision_h
     Proc.new {|last, changed, modified, branch, title|
       [
-        "#define RUBY_REVISION #{changed || 0}",
+        "#define RUBY_REVISION \"#{changed[0...10]}\"",
         if branch
           e = '..'
           limit = 16