hooks/post-receive-email: use plumbing instead of git log/show

diff --git a/contrib/hooks/post-receive-email b/contrib/hooks/post-receive-email
index 0e5b72d7f19185c3b6b36150085d475c7ef15db4..72084511e7a720448f16f94dad26ce3e7b0c9196 100755 (executable)
--- a/contrib/hooks/post-receive-email
+++ b/contrib/hooks/post-receive-email
@@ -2,10 +2,19 @@
 #
 # Copyright (c) 2007 Andy Parkins
 #
-# An example hook script to mail out commit update information.  This hook
-# sends emails listing new revisions to the repository introduced by the
-# change being reported.  The rule is that (for branch updates) each commit
-# will appear on one email and one email only.
+# An example hook script to mail out commit update information.
+#
+# NOTE: This script is no longer under active development.  There
+# is another script, git-multimail, which is more capable and
+# configurable and is largely backwards-compatible with this script;
+# please see "contrib/hooks/multimail/".  For instructions on how to
+# migrate from post-receive-email to git-multimail, please see
+# "README.migrate-from-post-receive-email" in that directory.
+#
+# This hook sends emails listing new revisions to the repository
+# introduced by the change being reported.  The rule is that (for
+# branch updates) each commit will appear on one email and one email
+# only.
 #
 # This hook is stored in the contrib/hooks directory.  Your distribution
 # will have put this somewhere standard.  You should make this script
@@ -462,7 +471,7 @@ generate_delete_branch_email()
        echo "       was  $oldrev"
        echo ""
        echo $LOGBEGIN
-       git show -s --pretty=oneline $oldrev
+       git diff-tree -s --always --pretty=oneline $oldrev
        echo $LOGEND
 }
 
@@ -538,11 +547,11 @@ generate_atag_email()
                # performed on them
                if [ -n "$prevtag" ]; then
                        # Show changes since the previous release
-                       git rev-list --pretty=short "$prevtag..$newrev" | git shortlog
+                       git shortlog "$prevtag..$newrev"
                else
                        # No previous tag, show all the changes since time
                        # began
-                       git rev-list --pretty=short $newrev | git shortlog
+                       git shortlog $newrev
                fi
                ;;
        *)
@@ -562,7 +571,7 @@ generate_delete_atag_email()
        echo "       was  $oldrev"
        echo ""
        echo $LOGBEGIN
-       git show -s --pretty=oneline $oldrev
+       git diff-tree -s --always --pretty=oneline $oldrev
        echo $LOGEND
 }
 
@@ -608,7 +617,7 @@ generate_general_email()
        echo ""
        if [ "$newrev_type" = "commit" ]; then
                echo $LOGBEGIN
-               git show --no-color --root -s --pretty=medium $newrev
+               git diff-tree -s --always --pretty=medium $newrev
                echo $LOGEND
        else
                # What can we do here?  The tag marks an object that is not
@@ -627,7 +636,7 @@ generate_delete_general_email()
        echo "       was  $oldrev"
        echo ""
        echo $LOGBEGIN
-       git show -s --pretty=oneline $oldrev
+       git diff-tree -s --always --pretty=oneline $oldrev
        echo $LOGEND
 }