Reduce :Rnavcommand to a removal notification

Author: tpope

autoload/rails.vim

@@ -2556,34 +2556,16 @@ function! s:Navcommand(bang,...)
   let suffix = '.rb'
   let affinity = ''
   for arg in a:000
-    if arg =~# '^-suffix='
-      let suffix = matchstr(arg,'-suffix=\zs.*')
-    elseif arg =~# '^-default='
-      let default = matchstr(arg,'-default=\zs.*')
-      if default =~# '()$'
-        let affinity = default[0:-3]
-        unlet default
-      endif
-    elseif arg !~# '^-'
-      if !exists('name')
-        let name = arg
-      else
-        let prefixes += [s:sub(arg, '/=$', '/')]
-      endif
+    if arg =~# '^[a-z]\+$'
+      for prefix in ['E', 'S', 'V', 'T', 'D', 'R', 'RE', 'RS', 'RV', 'RT', 'RD']
+        exe 'command! -buffer -bar -bang -nargs=* ' .
+              \ (prefix =~# 'D' ? '-range=0 ' : '') .
+              \ prefix . arg . ' :echoerr ' .
+              \ string(':Rnavcommand has been removed.  See :help rails-projections')
+      endfor
+      break
     endif
   endfor
-  if !exists('name') || name !~# '^[a-z]\+$'
-    return s:error("E182: Invalid command name")
-  endif
-  if empty(prefixes)
-    return ''
-  endif
-  let command = map(prefixes, '{"pattern": v:val . "*" . suffix, "affinity": affinity}')
-  if exists('default')
-    let command += [{"pattern": default}]
-  endif
-  let deprecation = ':Rnavcommand is deprecated.  See :help config/projections.json for replacement.'
-  return s:define_navcommand(name, command, 'call s:warn('.string(deprecation).')')
 endfunction
 
 function! s:define_navcommand(name, projection, ...) abort

doc/rails.txt

@@ -8,7 +8,6 @@ Author:  Tim Pope <http://tpo.pe/>
 |rails-gf|                          File Under Cursor - gf
 |rails-alternate-related|           Alternate and Related Files
 |rails-type-navigation|             File Type Commands
-|rails-custom-navigation|           Custom Navigation Commands
 |rails-rake|                    Rake
 |rails-scripts|                 Script Wrappers
 |rails-refactoring|             Refactoring Helpers
@@ -362,17 +361,6 @@ There are also "classic" versions of these commands that start with :R (e.g.,
 			given with an extension, a new file will be created.
 			This is a quick way to create a new view.
 
-Custom Navigation Commands  ~
-						*rails-custom-navigation*
-
-The officially supported way to create custom navigation commands is with
-projections, as described under |rails-projections|.
-
-						*rails-:Rnavcommand*
-:Rnavcommand [options] {name} [{path} ...]
-			Create a custom navigation command.  Deprecated in
-			favor of |rails-projections|.
-
 Finally, one Vim feature that proves helpful in conjunction with all of the
 above is |CTRL-^|.  This keystroke edits the previous file, and is helpful to
 back out of any of the above commands.
@@ -870,6 +858,10 @@ Rails file is loaded.
 This file used to be sourced automatically from the root of the application,
 but has been superseded by |rails-projections|.
 
+						*rails-:Rnavcommand*
+:Rnavcommand		This command has been superseded by
+			|rails-projections|.
+
 						*rails-:Rset*
 :Rset			This command has been superseded by
 			|rails-projections|.