--- a/doc/gutentags.txt	Sun Feb 21 10:22:44 2016 -0800
+++ b/doc/gutentags.txt	Sun Feb 21 10:34:47 2016 -0800
@@ -378,6 +378,16 @@
                         See |gutentags_ctags_executable_{filetype}| for more
                         information.
 
+                                             *gutentags_ctags_no_space_in_paths*
+g:gutentags_ctags_no_space_in_paths
+                        When set to 1, the root path of a project will have
+                        any spaces replaced by underscores. This is in case
+                        the particular `ctags` implementation you're using
+                        doesn't support tags filenames with spaces, which
+                        seems to be the case with Exuberant Ctags.
+                        Set to 0 to leave project root paths as is.
+                        Defaults to 1.
+
 
 =============================================================================
 5. Project Settings                             *gutentags-project-settings*