diff --git a/data/core/doc/init.lua b/data/core/doc/init.lua
index d53a5c96..920e2669 100644
--- a/data/core/doc/init.lua
+++ b/data/core/doc/init.lua
@@ -102,7 +102,11 @@ end
 
 
 function Doc:is_dirty()
-  return self.clean_change_id ~= self:get_change_id() or self.new_file
+  if self.new_file then
+    return #self.lines > 1 or #self.lines[1] > 1
+  else
+    return self.clean_change_id ~= self:get_change_id()
+  end
 end
 
 
diff --git a/src/main.c b/src/main.c
index 9820ba93..1342aaab 100644
--- a/src/main.c
+++ b/src/main.c
@@ -44,8 +44,7 @@ static void get_exe_filename(char *buf, int sz) {
   int len = GetModuleFileName(NULL, buf, sz - 1);
   buf[len] = '\0';
 #elif __linux__
-  char path[512];
-  sprintf(path, "/proc/%d/exe", getpid());
+  char path[] = "/proc/self/exe";
   int len = readlink(path, buf, sz - 1);
   buf[len] = '\0';
 #elif __APPLE__