Use git tag --contains REV for the IDF_Scm::inTags() implementation.

This works similar to git branch --contains REV; additionally give the
revision id and not some possibly symbolic name to the inBranches()
call when we determine the branches a commit is in.

NEWS.mdtext

@@ -52,6 +52,7 @@
 - Disable browser autocomplete of password fields in the account settings (issue 616)
 - Improvements in the automatic linker parser (issue 618)
 - The `createIssue` API method did not check the API authentication (issue 619)
+- Print active git branch heads and tags in bold 
 
 ## Documentation
 

src/IDF/Scm/Git.php

@@ -238,35 +238,29 @@ class IDF_Scm_Git extends IDF_Scm
      **/
     public function inTags($commit, $path)
     {
-        return $this->_inObject($commit, 'tag');
+        if (isset($this->cache['inTags'][$commit])) {
+            return $this->cache['inTags'][$commit];
         }
 
-    /**
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '')
-     * Returns in which branches or tags a commit is.
+            .sprintf('GIT_DIR=%s %s tag --contains %s',
-     *
+                     escapeshellarg($this->repo),
-     * @param string Commit
+                     Pluf::f('git_path', 'git'),
-     * @param string Object's type: 'branch' or 'tag'.
+                     escapeshellarg($commit));
-     * @return array
+        self::exec('IDF_Scm_Git::inTags', $cmd, $out, $return);
-     */
+        if (0 != $return) {
-    private function _inObject($commit, $object)
+            throw new IDF_Scm_Exception(sprintf($this->error_tpl,
-    {
+                                                $cmd, $return,
-        $object = strtolower($object);
+                                                implode("\n", $out)));
-        if ('branch' === $object) {
-            $objects = $this->getBranches();
-        } else if ('tag' === $object) {
-            $objects = $this->getTags();
-        } else {
-            throw new InvalidArgumentException(sprintf(__('Invalid value for the parameter %1$s: %2$s. Use %3$s.'),
-                                                       '$object',
-                                                       $object,
-                                                       '\'branch\' or \'tag\''));
         }
-        unset($object);
+
-        $result = array();
+        $res = array();
-        if (array_key_exists($commit, $objects)) {
+        foreach ($out as $line) {
-            $result[] = $commit;
+            $res[] = $line;
         }
-        return $result;
+
+        $this->cache['inTags'][$commit] = $res;
+        return $res;
     }
 
     /**
@@ -527,7 +521,7 @@ class IDF_Scm_Git extends IDF_Scm
             $out[0]->diff = '';
         }
 
-        $out[0]->branch = implode(', ', $this->inBranches($commit, null));
+        $out[0]->branch = implode(', ', $this->inBranches($out[0]->commit, null));
         return $out[0];
     }