Pass through the git_root_dir, if present

Otherwise the file > blame > commit sequence breaks.

git/__init__.py

@@ -319,7 +319,11 @@ def quick_panel(self, *args, **kwargs):
     def record_git_root_to_view(self, view):
         # Store the git root directory in the view so we can resolve relative paths
         # when the user wants to navigate to the source file.
-        view.settings().set("git_root_dir", git_root(self.get_working_dir()))
+        if self.get_working_dir():
+            root = git_root(self.get_working_dir())
+        else:
+            root = self.active_view().settings().get("git_root_dir")
+        view.settings().set("git_root_dir", root)
 
 
 # A base for all git commands that work with the entire repository
@@ -359,11 +363,10 @@ def get_working_dir(self):
         file_name = self._active_file_name()
         if file_name:
             return os.path.realpath(os.path.dirname(file_name))
-        else:
-            try:  # handle case with no open folder
-                return self.window.folders()[0]
-            except IndexError:
-                return ''
+        try:  # handle case with no open folder
+            return self.window.folders()[0]
+        except IndexError:
+            return ''
 
     def get_window(self):
         return self.window
@@ -390,7 +393,10 @@ def get_relative_file_name(self):
         return file_name.replace('\\', '/')  # windows issues
 
     def get_working_dir(self):
-        return os.path.realpath(os.path.dirname(self.view.file_name()))
+        file_name = self.view.file_name()
+        if file_name:
+            return os.path.realpath(os.path.dirname(file_name))
+        return ''
 
     def get_window(self):
         # Fun discovery: if you switch tabs while a command is working,

git/history.py

@@ -43,8 +43,6 @@ def get_lines(self):
     def blame_done(self, result, position=None):
         view = self.scratch(result, title="Git Blame", position=position,
                             syntax=plugin_file("syntax/Git Blame.tmLanguage"))
-        # store working dir to be potentially used by the GitGotoCommit command
-        view.settings().set("git_working_dir", self.get_working_dir())
 
 
 class GitLog(object):
@@ -239,7 +237,7 @@ def run(self, edit):
         commit = line.split(" ")[0]
         if not commit or commit == "00000000":
             return
-        working_dir = view.settings().get("git_working_dir")
+        working_dir = view.settings().get("git_root_dir")
         self.run_command(['git', 'show', commit], self.show_done, working_dir=working_dir)
 
     def show_done(self, result):