feat(gtags): add ctags_bin option

autoload/SpaceVim/layers/gtags.vim

@@ -30,6 +30,7 @@ scriptencoding utf-8
 " adding entries. same as |g:gtags_open_list|
 " 3. `gtagslabel`: the backend of gtags command, you can use `ctags` or
 " `pygments`. It is empty string by default.
+" 4. `ctags_bin`: set the command or path of ctags, default is 'ctags'
 
 if exists('s:gtagslabel')
   finish
@@ -87,6 +88,9 @@ function! SpaceVim#layers#gtags#set_variable(var) abort
   let g:gtags_open_list = get(a:var,
         \ 'open_quickfix',
         \ g:gtags_open_list)
+  let g:gtags_ctags_bin = get(a:var,
+        \ 'ctags_bin',
+        \ 'ctags')
 endfunction
 
 function! SpaceVim#layers#gtags#health() abort
@@ -97,7 +101,7 @@ endfunction
 
 function! SpaceVim#layers#gtags#get_options() abort
 
-  return ['gtagslabel']
+  return ['gtagslabel', 'ctags_bin']
 
 endfunction
 

bundle/gtags.vim/autoload/ctags.vim

@@ -8,14 +8,19 @@
 
 scriptencoding utf-8
 
-let s:LOGGER =SpaceVim#logger#derive('ctags')
-
-if !executable('ctags')
-  call s:LOGGER.warn('ctags is not executable, you need to install ctags')
+if exists('g:loaded_ctags')
   finish
 endif
 
-if exists('g:loaded_ctags')
+
+let s:LOGGER =SpaceVim#logger#derive('ctags')
+
+if !exists('g:gtags_ctags_bin')
+    let g:gtags_ctags_bin = 'ctags'
+endif
+
+if !executable(g:gtags_ctags_bin)
+  call s:LOGGER.warn(g:gtags_ctags_bin . ' is not executable, you need to install ctags')
   finish
 endif
 
@@ -45,7 +50,7 @@ endfunction
 
 function! ctags#update(...) abort
   if !s:version_checked
-    call s:JOB.start(['ctags', '--version'], {
+    call s:JOB.start([g:gtags_ctags_bin, '--version'], {
           \ 'on_stdout': funcref('s:version_std_out'),
           \ 'on_exit': funcref('s:version_exit'),
           \ })
@@ -55,7 +60,7 @@ function! ctags#update(...) abort
   call s:LOGGER.info('update ctags database for ' . project_root)
   let dir = s:FILE.unify_path(g:tags_cache_dir) 
         \ . s:FILE.path_to_fname(project_root)
-  let cmd = ['ctags']
+  let cmd = [g:gtags_ctags_bin]
   if s:is_u_ctags
     let cmd += ['-G']
   endif

bundle/gtags.vim/plugin/gtags.vim

@@ -16,7 +16,6 @@ if !exists('g:gtags_silent')
     let g:gtags_silent = 1
 endif
 
-
 ""
 " General form of Gtags command is as follows:
 " >

doc/SpaceVim.txt

@@ -2057,6 +2057,7 @@ The layer option can be used when loading the `gtags` layer, for example:
 adding entries. same as |g:gtags_open_list|
   3. `gtagslabel`: the backend of gtags command, you can use `ctags` or
 `pygments`. It is empty string by default.
+  4. `ctags_bin`: set the command or path of ctags, default is 'ctags'
 
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