[PATCHv2 10/21] completion: list refs from remote when remote's name matches a directory

[SZEDER Gábor]

If the remote given to __git_refs() happens to match both the name of
a configured remote and the name of a directory in the current working
directory, then that directory is assumed to be a git repository, and
listing refs from that directory will be attempted.  This is wrong,
because in such a situation git commands (e.g. 'git fetch|pull|push
<remote>' whom these refs will eventually be passed to) give
precedence to the configured remote.  Therefore, __git_refs() should
list refs from the configured remote as well.

Add the helper function __git_is_configured_remote() that checks
whether its argument matches the name of a configured remote.  Use
this helper to decide how to handle the remote passed to __git_refs().

Signed-off-by: SZEDER Gábor <szeder....@gmail.com>
---
 contrib/completion/git-completion.bash | 20 ++++++++++++++++++--
 t/t9902-completion.sh                  | 11 ++++++++++-
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/contrib/completion/git-completion.bash 
b/contrib/completion/git-completion.bash
index 7d7e8b9d9..fd0ba1f3b 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -347,12 +347,16 @@ __git_refs ()
        local format refs pfx
 
        if [ -n "$remote" ]; then
-               if [ -d "$remote/.git" ]; then
+               if __git_is_configured_remote "$remote"; then
+                       # configured remote takes precedence over a
+                       # local directory with the same name
+                       list_refs_from=remote
+               elif [ -d "$remote/.git" ]; then
                        dir="$remote/.git"
                elif [ -d "$remote" ]; then
                        dir="$remote"
                else
-                       list_refs_from=remote
+                       list_refs_from=url
                fi
        fi
 
@@ -435,6 +439,18 @@ __git_remotes ()
        git --git-dir="$d" remote
 }
 
+# Returns true if $1 matches the name of a configured remote, false otherwise.
+__git_is_configured_remote ()
+{
+       local remote
+       for remote in $(__git_remotes); do
+               if [ "$remote" = "$1" ]; then
+                       return 0
+               fi
+       done
+       return 1
+}
+
 __git_list_merge_strategies ()
 {
        git merge -s help 2>&1 |
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 6e64cd6ba..a201b5212 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -373,6 +373,15 @@ test_expect_success '__git_remotes - list remotes from 
$GIT_DIR/remotes and from
        test_cmp expect actual
 '
 
+test_expect_success '__git_is_configured_remote' '
+       test_when_finished "git remote remove remote_1" &&
+       git remote add remote_1 git://remote_1 &&
+       test_when_finished "git remote remove remote_2" &&
+       git remote add remote_2 git://remote_2 &&
+       verbose __git_is_configured_remote remote_2 &&
+       test_must_fail __git_is_configured_remote non-existent
+'
+
 test_expect_success 'setup for ref completion' '
        git commit --allow-empty -m initial &&
        git branch matching-branch &&
@@ -516,7 +525,7 @@ test_expect_success '__git_refs - configured remote - full 
refs - repo given on
        test_cmp expected "$actual"
 '
 
-test_expect_failure '__git_refs - configured remote - remote name matches a 
directory' '
+test_expect_success '__git_refs - configured remote - remote name matches a 
directory' '
        cat >expected <<-EOF &&
        HEAD
        branch-in-other
-- 
2.11.0.555.g967c1bcb3