Let bundled_gems specify commits to test (#3641)

1 files changed, 8 insertions, 6 deletions

diff --git a/tool/fetch-bundled_gems.rb b/tool/fetch-bundled_gems.rb
index 4ba1848d00..ebb70e88f9 100755
--- a/tool/fetch-bundled_gems.rb
+++ b/tool/fetch-bundled_gems.rb
@@ -8,18 +8,20 @@ BEGIN {
   Dir.chdir(dir)
 }
 
-n, v, u = $F
+n, v, u, r = $F
+
+next if n =~ /^#/
 
 if File.directory?(n)
   puts "updating #{n} ..."
-  system("git", (v == "master" ? "pull" : "fetch"), chdir: n) or abort
+  system("git", "fetch", chdir: n) or abort
 else
   puts "retrieving #{n} ..."
   system(*%W"git clone #{u} #{n}") or abort
 end
+c = r || "v#{v}"
 checkout = %w"git -c advice.detachedHead=false checkout"
-unless system(*checkout, v.sub(/\A(?=\d)/, 'v'), chdir: n)
-  unless /\A\d/ =~ v and system(*checkout, v, chdir: n)
-    abort
-  end
+puts "checking out #{c} (v=#{v}, r=#{r}) ..."
+unless system(*checkout, c, "--", chdir: n)
+  abort
 end