Cached statuses using relative path keys

This added a Git::getCachedPathStatus API to access this data
now that properly relativizes paths to the repository's working
directory.

src/git.coffee

@@ -1,9 +1,12 @@
+{join} = require 'path'
+
 _ = require 'underscore-plus'
-fs = require 'fs-plus'
-Task = require './task'
 {Emitter, Subscriber} = require 'emissary'
+fs = require 'fs-plus'
 GitUtils = require 'git-utils'
 
+Task = require './task'
+
 # Public: Represents the underlying git operations performed by Atom.
 #
 # This class shouldn't be instantiated directly but instead by accessing the
@@ -125,13 +128,14 @@ class Git
   # Returns a {Number} representing the status. This value can be passed to
   # {::isStatusModified} or {::isStatusNew} to get more information.
   getPathStatus: (path) ->
-    currentPathStatus = @statuses[path] ? 0
     repo = @getRepo(path)
+    relativePath = @relativize(path)
+    currentPathStatus = @statuses[relativePath] ? 0
     pathStatus = repo.getStatus(repo.relativize(path)) ? 0
     if pathStatus > 0
-      @statuses[path] = pathStatus
+      @statuses[relativePath] = pathStatus
     else
-      delete @statuses[path]
+      delete @statuses[relativePath]
     if currentPathStatus isnt pathStatus
       @emit 'status-changed', path, pathStatus
     pathStatus
@@ -322,6 +326,14 @@ class Git
   getCachedUpstreamAheadBehindCount: (path) ->
     @getRepo(path).upstream ? @upstream
 
+  # Public: Get the cached status for the given path.
+  #
+  # path - A {String} path in the repository, relative or absolute.
+  #
+  # Returns a status {Number} or null if path is not in the cache.
+  getCachedPathStatus: (path) ->
+    @statuses[@relativize(path)]
+
   # Public: Returns true if the given branch exists.
   hasBranch: (branch) -> @getReferenceTarget("refs/heads/#{branch}")?
 

src/repository-status-handler.coffee

@@ -13,7 +13,7 @@ module.exports = (repoPath) ->
     # Statuses in main repo
     workingDirectoryPath = repo.getWorkingDirectory()
     for filePath, status of repo.getStatus()
-      statuses[path.join(workingDirectoryPath, filePath)] = status
+      statuses[filePath] = status
 
     # Statuses in submodules
     for submodulePath, submoduleRepo of repo.submodules
@@ -23,7 +23,7 @@ module.exports = (repoPath) ->
 
       workingDirectoryPath = submoduleRepo.getWorkingDirectory()
       for filePath, status of submoduleRepo.getStatus()
-        statuses[path.join(workingDirectoryPath, filePath)] = status
+        statuses[repo.relativize(path.join(workingDirectoryPath, filePath))] = status
 
     upstream = repo.getAheadBehindCount()
     branch = repo.getHead()