git-fetch: follow tag only when tracking remote branch.

Unless --no-tags flag was given, git-fetch tried to always
follow remote tags that point at the commits we picked up.

It is not very useful to pick up tags from remote unless storing
the fetched branch head in a local tracking branch.  This is
especially true if the fetch is done to merge the remote branch
into our current branch as one-shot basis (i.e. "please pull"),
and is even harmful if the remote repository has many irrelevant
tags.

This proposed update disables the automated tag following unless
we are storing the a fetched branch head in a local tracking
branch.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git-fetch.sh b/git-fetch.sh
index b4325d9d98589bf7823174318b431197d6b896c6..fcc24f85c3e5d79f2e05511ad42d77e05626cc7a 100755 (executable)
--- a/git-fetch.sh
+++ b/git-fetch.sh
@@ -368,20 +368,25 @@ fetch_main "$reflist"
 # automated tag following
 case "$no_tags$tags" in
 '')
-       taglist=$(IFS=" " &&
-       git-ls-remote $upload_pack --tags "$remote" |
-       sed -ne 's|^\([0-9a-f]*\)[      ]\(refs/tags/.*\)^{}$|\1 \2|p' |
-       while read sha1 name
-       do
-               test -f "$GIT_DIR/$name" && continue
-               git-check-ref-format "$name" || {
-                       echo >&2 "warning: tag ${name} ignored"
-                       continue
-               }
-               git-cat-file -t "$sha1" >/dev/null 2>&1 || continue
-               echo >&2 "Auto-following $name"
-               echo ".${name}:${name}"
-       done)
+       case "$reflist" in
+       *:refs/*)
+               # effective only when we are following remote branch
+               # using local tracking branch.
+               taglist=$(IFS=" " &&
+               git-ls-remote $upload_pack --tags "$remote" |
+               sed -ne 's|^\([0-9a-f]*\)[      ]\(refs/tags/.*\)^{}$|\1 \2|p' |
+               while read sha1 name
+               do
+                       test -f "$GIT_DIR/$name" && continue
+                       git-check-ref-format "$name" || {
+                               echo >&2 "warning: tag ${name} ignored"
+                               continue
+                       }
+                       git-cat-file -t "$sha1" >/dev/null 2>&1 || continue
+                       echo >&2 "Auto-following $name"
+                       echo ".${name}:${name}"
+               done)
+       esac
        case "$taglist" in
        '') ;;
        ?*)