# HG changeset patch
# User Daniel Hahler <git@thequod.de>
# Date 1459958739 -7200
# Node ID 76a4822aab767e492c3c807545f1262a08e34828
# Parent  df3b0ca480139292e5a6524d264889cc045d0a07
Use existing b:gutentags_root

This could be set from g:gutentags_enabled_user_func then, for example.

diff -r df3b0ca48013 -r 76a4822aab76 autoload/gutentags.vim
--- a/autoload/gutentags.vim	Fri Mar 25 20:41:38 2016 -0700
+++ b/autoload/gutentags.vim	Wed Apr 06 18:05:39 2016 +0200
@@ -157,7 +157,9 @@
         if g:gutentags_resolve_symlinks
             let l:buf_dir = fnamemodify(resolve(expand('%:p', 1)), ':p:h')
         endif
-        let b:gutentags_root = gutentags#get_project_root(l:buf_dir)
+        if !exists('b:gutentags_root')
+            let b:gutentags_root = gutentags#get_project_root(l:buf_dir)
+        endif
         if filereadable(b:gutentags_root . '/.notags')
             call gutentags#trace("'notags' file found... no gutentags support.")
             return
diff -r df3b0ca48013 -r 76a4822aab76 doc/gutentags.txt
--- a/doc/gutentags.txt	Fri Mar 25 20:41:38 2016 -0700
+++ b/doc/gutentags.txt	Wed Apr 06 18:05:39 2016 +0200
@@ -332,9 +332,11 @@
 g:gutentags_enabled_user_func
                         When set to a non-empty string, it is expected to be
                         the name of a function that will be called when a file
-                        is open in a project. The function gets passed the
+                        is opened in a project. The function gets passed the
                         path of the file and if it returns 0, Gutentags won't
                         be enabled for that file.
+                        You can use this also to manually set `b:gutentags_root`
+                        (see |gutentags_project_root|).
                         Defaults to "".
 
                                             *gutentags_define_advanced_commands*