if core.pager is set but empty default to less

Author: spderosso

gitless/cli/helpers.py

@@ -57,10 +57,12 @@ def get_branch_or_use_upstream(branch_name, arg, repo):
 
 
 def page(fp, repo):
+  pager = ''
   try:
-    cmd = [repo.config['core.pager'], fp]
+    pager = repo.config['core.pager']
   except KeyError:
-    cmd = ['less', '-r', '-f', fp]
+    pass
+  cmd = [pager, fp] if pager else ['less', '-r', '-f', fp]
   subprocess.call(cmd, stdin=sys.stdin, stdout=sys.stdout)