k0kubun	2018-07-08 14:52:12 +0900 (Sun, 08 Jul 2018)

  New Revision: 63883

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63883

  Log:
    tool/git-refresh: skip git fetch and checkout
    
    if the tag is already checked out, to optimize the execution time.
    
    I'm going to prepare a task depending on this tool, and I want that to
    finish fast and output nothing when it's already up-to-date.

  Modified files:
    trunk/tool/git-refresh
Index: tool/git-refresh
===================================================================
--- tool/git-refresh	(revision 63882)
+++ tool/git-refresh	(revision 63883)
@@ -31,6 +31,9 @@ dir="$2" https://github.com/ruby/ruby/blob/trunk/tool/git-refresh#L31
 shift 2
 [ x"$branch" = x ] && unset branch || :
 if [ -d "$dir" ]; then
+    if [ x"$(git -C "$dir" describe --tags)" = x"$branch" ]; then
+        exit 0 # already up-to-date
+    fi
     echo updating `expr "/$dir/" : '.*/\([^/][^/]*\)/'` ...
     [ $quiet ] || set -x
     $CHDIR "$dir"

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