company-gtags: Don't try to complete in non-file buffers

diff --git a/company-gtags.el b/company-gtags.el
index 70c5ad5dd86f17fa5acdfe6fd0c42ef99922c833..aaa22b9523ea785b6204f682302849f09d7ad58e 100644 (file)
--- a/company-gtags.el
+++ b/company-gtags.el
@@ -95,6 +95,7 @@ completion."
   (cl-case command
     (interactive (company-begin-backend 'company-gtags))
     (prefix (and company-gtags-executable
+                 buffer-file-name
                  (apply #'derived-mode-p company-gtags-modes)
                  (not (company-in-string-or-comment))
                  (company-gtags--tags-available-p)