From a5e559eb82611ed0d43efa4ba2c2d21261170832 Mon Sep 17 00:00:00 2001
From: Sebastien Chapuis <sebastien@chapu.is>
Date: Fri, 27 Apr 2018 13:23:51 +0200
Subject: [PATCH] [lsp-ui-sideline] Ensure that we're in a visiting buffer #122

---
 lsp-ui-sideline.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lsp-ui-sideline.el b/lsp-ui-sideline.el
index e3011186..f4623fc4 100644
--- a/lsp-ui-sideline.el
+++ b/lsp-ui-sideline.el
@@ -368,7 +368,8 @@ CURRENT is non-nil when the point is on the symbol."
 It loops on the symbols of the current line and request information
 to the language server."
   (lsp-ui-sideline--delete-ov)
-  (when lsp--cur-workspace
+  (when (and lsp--cur-workspace
+             buffer-file-name)
     (let ((eol (line-end-position))
           (eob (buffer-end 1))
           (bol (line-beginning-position))