Update runtime files.
diff --git a/runtime/ftplugin/dune.vim b/runtime/ftplugin/dune.vim
index 8b1f8b4..86c99c0 100644
--- a/runtime/ftplugin/dune.vim
+++ b/runtime/ftplugin/dune.vim
@@ -1,7 +1,7 @@
 " Language:    Dune buildsystem
 " Maintainer:  Markus Mottl        <markus.mottl@gmail.com>
 "              Anton Kochkov       <anton.kochkov@gmail.com>
-" URL:         https://github.com/rgrinberg/vim-ocaml
+" URL:         https://github.com/ocaml/vim-ocaml
 " Last Change:
 "              2018 Nov 3 - Added commentstring (Markus Mottl)
 "              2017 Sep 6 - Initial version (Etienne Millon)
diff --git a/runtime/ftplugin/fstab.vim b/runtime/ftplugin/fstab.vim
new file mode 100644
index 0000000..3e7af9f
--- /dev/null
+++ b/runtime/ftplugin/fstab.vim
@@ -0,0 +1,19 @@
+" Vim ftplugin file
+" Language: fstab file
+" Maintainer: Radu Dineiu <radu.dineiu@gmail.com>
+" URL: https://raw.github.com/rid9/vim-fstab/master/ftplugin/fstab.vim
+" Last Change: 2020 Dec 29
+" Version: 1.0
+"
+" Credits:
+"   Subhaditya Nath <sn03.general@gmail.com>
+
+if exists("b:did_ftplugin")
+	finish
+endif
+let b:did_ftplugin = 1
+
+setlocal commentstring=#%s
+let b:undo_ftplugin = "setlocal commentstring<"
+
+" vim: ts=8 ft=vim
\ No newline at end of file
diff --git a/runtime/ftplugin/ocaml.vim b/runtime/ftplugin/ocaml.vim
index e0d7efe..793b887 100644
--- a/runtime/ftplugin/ocaml.vim
+++ b/runtime/ftplugin/ocaml.vim
@@ -5,7 +5,7 @@
 "              Pierre Vittet       <pierre-vittet@pvittet.com>
 "              Stefano Zacchiroli  <zack@bononia.it>
 "              Vincent Aravantinos <firstname.name@imag.fr>
-" URL:         https://github.com/rgrinberg/vim-ocaml
+" URL:         https://github.com/ocaml/vim-ocaml
 " Last Change:
 "              2013 Oct 27 - Added commentstring (MM)
 "              2013 Jul 26 - load default compiler settings (MM)
@@ -38,7 +38,8 @@
 set cpo&vim
 
 " Comment string
-setlocal comments=
+setlocal comments=sr:(*\ ,mb:\ ,ex:*)
+setlocal comments^=sr:(**,mb:\ \ ,ex:*)
 setlocal commentstring=(*%s*)
 
 " Add mappings, unless the user didn't want this.
@@ -391,9 +392,9 @@
     endif
   endfun
 
-  " This variable contain a dictionnary of list. Each element of the dictionnary
-  " represent an annotation system. An annotation system is a list with :
-  " - annotation file name as it's key
+  " This variable contains a dictionary of lists. Each element of the dictionary
+  " represents an annotation system. An annotation system is a list with:
+  " - annotation file name as its key
   " - annotation file path as first element of the contained list
   " - build path as second element of the contained list
   " - annot_file_last_mod (contain the date of .annot file) as third element
@@ -521,7 +522,7 @@
   "c. link this stuff with what the user wants
   " ie. get the expression selected/under the cursor
 
-    let s:ocaml_word_char = '\w|[À-ÿ]|'''
+    let s:ocaml_word_char = '\w|[\xc0-\xff]|'''
 
       "In:  the current mode (eg. "visual", "normal", etc.)
       "Out: the borders of the expression we are looking for the type
diff --git a/runtime/ftplugin/sexplib.vim b/runtime/ftplugin/sexplib.vim
new file mode 100644
index 0000000..27e1b28
--- /dev/null
+++ b/runtime/ftplugin/sexplib.vim
@@ -0,0 +1,15 @@
+" Vim filetype plugin file
+" Language:    Sexplib
+" Maintainer:  Markus Mottl        <markus.mottl@gmail.com>
+" URL:         https://github.com/ocaml/vim-ocaml
+" Last Change:
+"              2017 Apr 12 - First version (MM)
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin=1
+
+" Comment string
+setl commentstring=;\ %s
+setl comments=:;