# HG changeset patch
# User Ludovic Chabant <ludovic@chabant.com>
# Date 1496171780 25200
# Node ID 685b81826b68135f00bb8d66eb8b9f2cbc394bcd
# Parent  3cd4597fb86b0f4867ae8b2466c248681d5b7909
Only check for the ctags executable once.

diff -r 3cd4597fb86b -r 685b81826b68 autoload/gutentags/ctags.vim
--- a/autoload/gutentags/ctags.vim	Sat Apr 22 10:32:30 2017 -0700
+++ b/autoload/gutentags/ctags.vim	Tue May 30 12:16:20 2017 -0700
@@ -35,6 +35,7 @@
 
 " Gutentags Module Interface {{{
 
+let s:did_check_exe = 0
 let s:runner_exe = gutentags#get_plat_file('update_tags')
 let s:unix_redir = (&shellredir =~# '%s') ? &shellredir : &shellredir . ' %s'
 
@@ -54,11 +55,14 @@
     endif
 
     " Check if the ctags executable exists.
-    if g:gutentags_enabled && executable(expand(g:gutentags_ctags_executable, 1)) == 0
-        let g:gutentags_enabled = 0
-        echoerr "Executable '".g:gutentags_ctags_executable."' can't be found. "
-                    \."Gutentags will be disabled. You can re-enable it by "
-                    \."setting g:gutentags_enabled back to 1."
+    if s:did_check_exe == 0
+        if g:gutentags_enabled && executable(expand(g:gutentags_ctags_executable, 1)) == 0
+            let g:gutentags_enabled = 0
+            echoerr "Executable '".g:gutentags_ctags_executable."' can't be found. "
+                        \."Gutentags will be disabled. You can re-enable it by "
+                        \."setting g:gutentags_enabled back to 1."
+        endif
+        let s:did_check_exe = 1
     endif
 endfunction