Add --follow option to Git log command (jupyterlab#864)

jupyterlab_git/git.py

@@ -432,7 +432,7 @@ async def status(self, path):
 
         return data
 
-    async def log(self, path, history_count=10):
+    async def log(self, path, history_count=10, follow_path="."):
         """
         Execute git log command & return the result.
         """
@@ -441,6 +441,9 @@ async def log(self, path, history_count=10):
             "log",
             "--pretty=format:%H%n%an%n%ar%n%s",
             ("-%d" % history_count),
+            "--follow",
+            "--",
+            follow_path,
         ]
         code, my_output, my_error = await execute(
             cmd,

jupyterlab_git/handlers.py

@@ -196,7 +196,7 @@ async def post(self, path: str = ""):
 
 class GitLogHandler(GitHandler):
     """
-    Handler for 'git log --pretty=format:%H-%an-%ar-%s'.
+    Handler for 'git log --pretty=format:%H-%an-%ar-%s --follow --'.
     Fetches Commit SHA, Author Name, Commit Date & Commit Message.
     """
 
@@ -208,7 +208,10 @@ async def post(self, path: str = ""):
         """
         body = self.get_json_body()
         history_count = body.get("history_count", 25)
-        result = await self.git.log(self.url2localpath(path), history_count)
+        follow_path = body.get("follow_path", ".")
+        result = await self.git.log(
+            self.url2localpath(path), history_count, follow_path
+        )
 
         if result["code"] != 0:
             self.set_status(500)

src/model.ts

@@ -711,7 +711,8 @@ export class GitExtension implements IGitExtension {
           URLExt.join(path, 'log'),
           'POST',
           {
-            history_count: count
+            history_count: count,
+            follow_path: this.selectedHistoryFile || '.'
           }
         );
       }