enable frozen_string_literal for Ruby 2.3+

There are likely yet-to-be-discovered bugs in here.
Also, keeping explicit #freeze calls for 2.2 users, since most
users have not migrated to 2.3, yet.

1 files changed, 3 insertions, 2 deletions

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 608a76d..3109918 100755
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,11 +1,12 @@
 #!/usr/bin/env ruby
 # Copyright (C) 2013-2015 all contributors <yahns-public@yhbt.net>
 # License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+# frozen_string_literal: true
 CONSTANT = "Yahns::VERSION"
 RVF = "lib/yahns/version.rb"
 GVF = "GIT-VERSION-FILE"
 DEF_VER = "v1.11.0"
-vn = DEF_VER
+vn = DEF_VER.dup
 
 # First see if there is a version file (included in release tarballs),
 # then try git-describe, then default.
@@ -23,7 +24,7 @@ if File.exist?(".git")
 end
 
 vn = vn.sub!(/\Av/, "")
-new_ruby_version = "#{CONSTANT} = '#{vn}' # :nodoc:\n"
+new_ruby_version = "#{CONSTANT} = '#{vn}'.freeze # :nodoc:\n"
 cur_ruby_version = File.read(RVF) rescue nil
 if new_ruby_version != cur_ruby_version
   File.open(RVF, "w") { |fp| fp.write(new_ruby_version) }