diff --git a/src/analysis/expansion.ml b/src/analysis/expansion.ml
index 05b9056761..0a5edc3760 100644
--- a/src/analysis/expansion.ml
+++ b/src/analysis/expansion.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 type t = Trie of (string * Longident.t * t list lazy_t)
diff --git a/src/analysis/namespaced_path.ml b/src/analysis/namespaced_path.ml
index a396a2b06a..b49115f987 100644
--- a/src/analysis/namespaced_path.ml
+++ b/src/analysis/namespaced_path.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+   This file is part of Merlin, an helper for ocaml editors
+
+   Copyright (C) 2013 - 2019  Merlin contributors
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation the
+   rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+   sell copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   The Software is provided "as is", without warranty of any kind, express or
+   implied, including but not limited to the warranties of merchantability,
+   fitness for a particular purpose and noninfringement. In no event shall
+   the authors or copyright holders be liable for any claim, damages or other
+   liability, whether in an action of contract, tort or otherwise, arising
+   from, out of or in connection with the software or the use or other dealings
+   in the Software.
+
+)* }}} *)
+
 open Std
 
 module Namespace = struct
diff --git a/src/analysis/namespaced_path.mli b/src/analysis/namespaced_path.mli
index 4e4a75cec2..4c39dcf429 100644
--- a/src/analysis/namespaced_path.mli
+++ b/src/analysis/namespaced_path.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+   This file is part of Merlin, an helper for ocaml editors
+
+   Copyright (C) 2013 - 2019  Merlin contributors
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation the
+   rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+   sell copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   The Software is provided "as is", without warranty of any kind, express or
+   implied, including but not limited to the warranties of merchantability,
+   fitness for a particular purpose and noninfringement. In no event shall
+   the authors or copyright holders be liable for any claim, damages or other
+   liability, whether in an action of contract, tort or otherwise, arising
+   from, out of or in connection with the software or the use or other dealings
+   in the Software.
+
+)* }}} *)
+
 module Namespace : sig
   type t = [
     | `Vals
diff --git a/src/analysis/polarity_search.ml b/src/analysis/polarity_search.ml
index 92a8b435ba..b2b4e53393 100644
--- a/src/analysis/polarity_search.ml
+++ b/src/analysis/polarity_search.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+   This file is part of Merlin, an helper for ocaml editors
+
+   Copyright (C) 2013 - 2019  Merlin contributors
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation the
+   rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+   sell copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   The Software is provided "as is", without warranty of any kind, express or
+   implied, including but not limited to the warranties of merchantability,
+   fitness for a particular purpose and noninfringement. In no event shall
+   the authors or copyright holders be liable for any claim, damages or other
+   liability, whether in an action of contract, tort or otherwise, arising
+   from, out of or in connection with the software or the use or other dealings
+   in the Software.
+
+)* }}} *)
+
 open Std
 
 type t = Trie of (string * Longident.t * t list lazy_t)
diff --git a/src/config/gen_config.ml b/src/config/gen_config.ml
index fc2d1a2f04..b2b661c378 100644
--- a/src/config/gen_config.ml
+++ b/src/config/gen_config.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+   This file is part of Merlin, an helper for ocaml editors
+
+   Copyright (C) 2013 - 2019  Merlin contributors
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation the
+   rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+   sell copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   The Software is provided "as is", without warranty of any kind, express or
+   implied, including but not limited to the warranties of merchantability,
+   fitness for a particular purpose and noninfringement. In no event shall
+   the authors or copyright holders be liable for any claim, damages or other
+   liability, whether in an action of contract, tort or otherwise, arising
+   from, out of or in connection with the software or the use or other dealings
+   in the Software.
+
+)* }}} *)
+
 let ocaml_version_val =
   match
     Scanf.sscanf Sys.argv.(1) "%s@.%s@.%d" (fun maj min p -> maj, min, p)
diff --git a/src/frontend/gen_ccflags.ml b/src/frontend/gen_ccflags.ml
index 5095258401..9e70819df5 100644
--- a/src/frontend/gen_ccflags.ml
+++ b/src/frontend/gen_ccflags.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+   This file is part of Merlin, an helper for ocaml editors
+
+   Copyright (C) 2013 - 2019  Merlin contributors
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation the
+   rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+   sell copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   The Software is provided "as is", without warranty of any kind, express or
+   implied, including but not limited to the warranties of merchantability,
+   fitness for a particular purpose and noninfringement. In no event shall
+   the authors or copyright holders be liable for any claim, damages or other
+   liability, whether in an action of contract, tort or otherwise, arising
+   from, out of or in connection with the software or the use or other dealings
+   in the Software.
+
+)* }}} *)
+
 let ccomp_type   = Sys.argv.(1)
 let pre_flags_f  = Sys.argv.(2)
 let post_flags_f = Sys.argv.(3)
diff --git a/src/frontend/lsp/ocamlmerlin_lsp.ml b/src/frontend/lsp/ocamlmerlin_lsp.ml
index 24157052ac..6a4ef80dff 100644
--- a/src/frontend/lsp/ocamlmerlin_lsp.ml
+++ b/src/frontend/lsp/ocamlmerlin_lsp.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 let {Logger. log} = Logger.for_section "ocamlmerlin-lsp"
 
 let initializeInfo: Lsp.Protocol.Initialize.result = {
diff --git a/src/frontend/new/new_commands.ml b/src/frontend/new/new_commands.ml
index 2fd137f48c..e55933b198 100644
--- a/src/frontend/new/new_commands.ml
+++ b/src/frontend/new/new_commands.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 type command =
diff --git a/src/frontend/new/new_commands.mli b/src/frontend/new/new_commands.mli
index 2c6498aa25..365874ef60 100644
--- a/src/frontend/new/new_commands.mli
+++ b/src/frontend/new/new_commands.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 type command =
diff --git a/src/frontend/new/new_merlin.ml b/src/frontend/new/new_merlin.ml
index 8ac66bb186..2909fa76da 100644
--- a/src/frontend/new/new_merlin.ml
+++ b/src/frontend/new/new_merlin.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (** {1 Prepare command-line arguments} *)
 
 let usage () =
diff --git a/src/frontend/ocamlmerlin_server.ml b/src/frontend/ocamlmerlin_server.ml
index 1da9b027f9..f332b02800 100644
--- a/src/frontend/ocamlmerlin_server.ml
+++ b/src/frontend/ocamlmerlin_server.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 let merlin_timeout =
   try float_of_string (Sys.getenv "MERLIN_TIMEOUT")
   with _ -> 600.0
diff --git a/src/frontend/old/old_merlin.mli b/src/frontend/old/old_merlin.mli
index 805b85b5d8..5068a33090 100644
--- a/src/frontend/old/old_merlin.mli
+++ b/src/frontend/old/old_merlin.mli
@@ -1 +1,27 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 val run : string list -> 'a
diff --git a/src/frontend/test/ocamlmerlin_test.ml b/src/frontend/test/ocamlmerlin_test.ml
index f458058cb6..499f3b4798 100644
--- a/src/frontend/test/ocamlmerlin_test.ml
+++ b/src/frontend/test/ocamlmerlin_test.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 (* Poor man's test framework *)
diff --git a/src/kernel/mconfig.ml b/src/kernel/mconfig.ml
index be575818b1..9a13a54c98 100644
--- a/src/kernel/mconfig.ml
+++ b/src/kernel/mconfig.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 (** {1 OCaml commandline parsing} *)
diff --git a/src/kernel/mconfig.mli b/src/kernel/mconfig.mli
index b3a4a8c813..b75b90d390 100644
--- a/src/kernel/mconfig.mli
+++ b/src/kernel/mconfig.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 (** {1 OCaml commandline parsing} *)
diff --git a/src/kernel/mocaml.ml b/src/kernel/mocaml.ml
index 6c57f6674e..1f74bacf20 100644
--- a/src/kernel/mocaml.ml
+++ b/src/kernel/mocaml.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 
diff --git a/src/kernel/mocaml.mli b/src/kernel/mocaml.mli
index 9fd35a6657..eb38880d31 100644
--- a/src/kernel/mocaml.mli
+++ b/src/kernel/mocaml.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (* Build settings *)
 val setup_config : Mconfig.t -> unit
 
diff --git a/src/kernel/mpipeline.ml b/src/kernel/mpipeline.ml
index 699d31d42a..e956505513 100644
--- a/src/kernel/mpipeline.ml
+++ b/src/kernel/mpipeline.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 let time_shift = ref 0.0
 
 let timed_lazy r x =
diff --git a/src/kernel/mpipeline.mli b/src/kernel/mpipeline.mli
index 3faccbe7ba..eb466085c7 100644
--- a/src/kernel/mpipeline.mli
+++ b/src/kernel/mpipeline.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t
 
 val make : Mconfig.t -> Msource.t -> t
diff --git a/src/kernel/mppx.ml b/src/kernel/mppx.ml
index 885dd49061..336e8a4c82 100644
--- a/src/kernel/mppx.ml
+++ b/src/kernel/mppx.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Mconfig
 
 let {Logger. log} = Logger.for_section "Mppx"
diff --git a/src/kernel/mppx.mli b/src/kernel/mppx.mli
index f329312299..6dd36ce1ee 100644
--- a/src/kernel/mppx.mli
+++ b/src/kernel/mppx.mli
@@ -1 +1,27 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 val rewrite : Mconfig.t -> Mreader.parsetree -> Mconfig.t * Mreader.parsetree
diff --git a/src/kernel/mreader.ml b/src/kernel/mreader.ml
index 2b8ace8d1b..8bc4b5e5e9 100644
--- a/src/kernel/mreader.ml
+++ b/src/kernel/mreader.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 type parsetree = [
diff --git a/src/kernel/mreader.mli b/src/kernel/mreader.mli
index 8e83d940b0..c934061b40 100644
--- a/src/kernel/mreader.mli
+++ b/src/kernel/mreader.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type parsetree = [
   | `Interface of Parsetree.signature
   | `Implementation of Parsetree.structure
diff --git a/src/kernel/mreader_explain.ml b/src/kernel/mreader_explain.ml
index 83c5186dd1..024856b756 100644
--- a/src/kernel/mreader_explain.ml
+++ b/src/kernel/mreader_explain.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Parser_raw
 open MenhirInterpreter
 
diff --git a/src/kernel/mreader_extend.ml b/src/kernel/mreader_extend.ml
index 89a4beabfa..965865c4e3 100644
--- a/src/kernel/mreader_extend.ml
+++ b/src/kernel/mreader_extend.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 open Extend_protocol.Reader
 
diff --git a/src/kernel/mreader_extend.mli b/src/kernel/mreader_extend.mli
index 01ee90fa43..d9faf4337c 100644
--- a/src/kernel/mreader_extend.mli
+++ b/src/kernel/mreader_extend.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t
 
 val stop : t -> unit
diff --git a/src/kernel/mreader_recover.ml b/src/kernel/mreader_recover.ml
index 4015905036..2cd743a12a 100644
--- a/src/kernel/mreader_recover.ml
+++ b/src/kernel/mreader_recover.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 let {Logger. log} = Logger.for_section "Mreader_recover"
diff --git a/src/kernel/mreader_recover.mli b/src/kernel/mreader_recover.mli
index 5cf5c0a2dd..77c783f4c2 100644
--- a/src/kernel/mreader_recover.mli
+++ b/src/kernel/mreader_recover.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 module Make
     (Parser : MenhirLib.IncrementalEngine.EVERYTHING)
     (Recovery : sig
diff --git a/src/kernel/msource.ml b/src/kernel/msource.ml
index f8991e99ba..97be443669 100644
--- a/src/kernel/msource.ml
+++ b/src/kernel/msource.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (* Merlin representation of a textual source code *)
 open Std
 
diff --git a/src/kernel/msource.mli b/src/kernel/msource.mli
index e8e2bbee88..8068fbae7f 100644
--- a/src/kernel/msource.mli
+++ b/src/kernel/msource.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (** {0 Merlin representation of a textual source code}
 
     It bundles filename and a content, and offers functions for computing
diff --git a/src/kernel/mtyper.ml b/src/kernel/mtyper.ml
index 15cf77519e..435eb8d412 100644
--- a/src/kernel/mtyper.ml
+++ b/src/kernel/mtyper.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 let {Logger. log} = Logger.for_section "Mtyper"
diff --git a/src/kernel/mtyper.mli b/src/kernel/mtyper.mli
index a6fb655230..c2c1b58b33 100644
--- a/src/kernel/mtyper.mli
+++ b/src/kernel/mtyper.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (** {1 Result of typechecker}
 
     [Mtyper] essentially produces a typedtree, but to make sense of it
diff --git a/src/lsp/protocol.ml b/src/lsp/protocol.ml
index 3cb370fa8d..a581b76c35 100644
--- a/src/lsp/protocol.ml
+++ b/src/lsp/protocol.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (**
  * This encodes LSP protocol specification as document at
  *
@@ -7,6 +33,15 @@
  *
  *)
 
+(**
+ * Copyright (c) 2016, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE_MIT.txt file in the root directory of this source tree.
+ *
+*)
+
 type documentUri = Uri.t [@@deriving yojson]
 
 type zero_based_int = int [@@deriving yojson]
diff --git a/src/lsp/rpc.ml b/src/lsp/rpc.ml
index 17467efb50..d0bcc7d2a7 100644
--- a/src/lsp/rpc.ml
+++ b/src/lsp/rpc.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t = {
   ic : in_channel;
   oc : out_channel;
@@ -152,7 +178,7 @@ let send_response rpc (response : Response.t) =
   send rpc json
 
 module Server_notification = struct
-  open Protocol 
+  open Protocol
 
   type t =
     | PublishDiagnostics of PublishDiagnostics.params
diff --git a/src/lsp/rpc.mli b/src/lsp/rpc.mli
index 167a796e02..c546574d8d 100644
--- a/src/lsp/rpc.mli
+++ b/src/lsp/rpc.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (**
  * This encodes LSP RPC state machine.
  *)
@@ -5,7 +31,7 @@
 module Server_notification : sig
   open Protocol
 
-  type t = 
+  type t =
     | PublishDiagnostics of PublishDiagnostics.publishDiagnosticsParams
 end
 
diff --git a/src/lsp/text_document.ml b/src/lsp/text_document.ml
index daf3c6774c..8894558bc9 100644
--- a/src/lsp/text_document.ml
+++ b/src/lsp/text_document.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Protocol
 
 type t = {
diff --git a/src/lsp/text_document.mli b/src/lsp/text_document.mli
index 90363230fd..7b94e09db8 100644
--- a/src/lsp/text_document.mli
+++ b/src/lsp/text_document.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Protocol
 
 type t
diff --git a/src/lsp/text_document_text.mll b/src/lsp/text_document_text.mll
index 2e2b659ac9..fba686714f 100644
--- a/src/lsp/text_document_text.mll
+++ b/src/lsp/text_document_text.mll
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 {
   type position = Protocol.position = {
     line : int;
@@ -7,7 +33,7 @@
   let position_in_range pos (range : Protocol.range) =
     if pos.line < range.start_.line || pos.line > range.end_.line
     then false
-    else 
+    else
       let rel_start =
         if pos.line = range.start_.line
         then pos.character >= range.start_.character
diff --git a/src/lsp/uri.ml b/src/lsp/uri.ml
index 0839974075..3b3a5681a5 100644
--- a/src/lsp/uri.ml
+++ b/src/lsp/uri.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t = string [@@deriving yojson { strict = false }]
 
 let to_path (uri : t) =
diff --git a/src/lsp/uri.mli b/src/lsp/uri.mli
index f4703e3eb8..0c6ba2ee26 100644
--- a/src/lsp/uri.mli
+++ b/src/lsp/uri.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t
 
 val of_yojson : Yojson.Safe.json -> (t, string) result
diff --git a/src/lsp/utils.ml b/src/lsp/utils.ml
index d68c413d27..d80112dc26 100644
--- a/src/lsp/utils.ml
+++ b/src/lsp/utils.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 module Result = struct
 
   let bind x ~f =
diff --git a/src/ocaml/merlin_specific/402/tast_helper.ml b/src/ocaml/merlin_specific/402/tast_helper.ml
index 114e99a516..557b263eec 100644
--- a/src/ocaml/merlin_specific/402/tast_helper.ml
+++ b/src/ocaml/merlin_specific/402/tast_helper.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Typedtree
 
 module Pat = struct
diff --git a/src/ocaml/merlin_specific/403/tast_helper.ml b/src/ocaml/merlin_specific/403/tast_helper.ml
index 114e99a516..557b263eec 100644
--- a/src/ocaml/merlin_specific/403/tast_helper.ml
+++ b/src/ocaml/merlin_specific/403/tast_helper.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Typedtree
 
 module Pat = struct
diff --git a/src/ocaml/merlin_specific/404/tast_helper.ml b/src/ocaml/merlin_specific/404/tast_helper.ml
index 114e99a516..557b263eec 100644
--- a/src/ocaml/merlin_specific/404/tast_helper.ml
+++ b/src/ocaml/merlin_specific/404/tast_helper.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Typedtree
 
 module Pat = struct
diff --git a/src/ocaml/merlin_specific/405/tast_helper.ml b/src/ocaml/merlin_specific/405/tast_helper.ml
index 114e99a516..557b263eec 100644
--- a/src/ocaml/merlin_specific/405/tast_helper.ml
+++ b/src/ocaml/merlin_specific/405/tast_helper.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Typedtree
 
 module Pat = struct
diff --git a/src/ocaml/merlin_specific/406/tast_helper.ml b/src/ocaml/merlin_specific/406/tast_helper.ml
index 114e99a516..557b263eec 100644
--- a/src/ocaml/merlin_specific/406/tast_helper.ml
+++ b/src/ocaml/merlin_specific/406/tast_helper.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Typedtree
 
 module Pat = struct
diff --git a/src/ocaml/merlin_specific/407/tast_helper.ml b/src/ocaml/merlin_specific/407/tast_helper.ml
index 114e99a516..557b263eec 100644
--- a/src/ocaml/merlin_specific/407/tast_helper.ml
+++ b/src/ocaml/merlin_specific/407/tast_helper.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Typedtree
 
 module Pat = struct
diff --git a/src/ocaml/parsing/msupport_parsing.ml b/src/ocaml/parsing/msupport_parsing.ml
index 567e5e28e1..7c511c4827 100644
--- a/src/ocaml/parsing/msupport_parsing.ml
+++ b/src/ocaml/parsing/msupport_parsing.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (* Filled in from Msupport. *)
 let msupport_raise_error : (exn -> unit) ref =
   ref raise
diff --git a/src/ocaml/preprocess/explain/gen_explain.ml b/src/ocaml/preprocess/explain/gen_explain.ml
index 3021b6ec0d..5edb793836 100644
--- a/src/ocaml/preprocess/explain/gen_explain.ml
+++ b/src/ocaml/preprocess/explain/gen_explain.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk
 open Cmly_api
 open Printf
diff --git a/src/ocaml/preprocess/parser_printer.mli b/src/ocaml/preprocess/parser_printer.mli
index db6dd2f919..b96614b16e 100644
--- a/src/ocaml/preprocess/parser_printer.mli
+++ b/src/ocaml/preprocess/parser_printer.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Parser_raw
 
 val print_symbol : MenhirInterpreter.xsymbol -> string
diff --git a/src/ocaml/preprocess/parser_recover.mli b/src/ocaml/preprocess/parser_recover.mli
index 8775aa15a0..070862bb65 100644
--- a/src/ocaml/preprocess/parser_recover.mli
+++ b/src/ocaml/preprocess/parser_recover.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Parser_raw
 
 module Default : sig
diff --git a/src/ocaml/preprocess/printer/gen_printer.ml b/src/ocaml/preprocess/printer/gen_printer.ml
index 1b558418cb..fca2fc317e 100644
--- a/src/ocaml/preprocess/printer/gen_printer.ml
+++ b/src/ocaml/preprocess/printer/gen_printer.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk
 open Cmly_format
 
diff --git a/src/ocaml/preprocess/recover/emitter.ml b/src/ocaml/preprocess/recover/emitter.ml
index 5cfec77d87..cc0d15b39f 100644
--- a/src/ocaml/preprocess/recover/emitter.ml
+++ b/src/ocaml/preprocess/recover/emitter.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk.Cmly_api
 open Utils
 
diff --git a/src/ocaml/preprocess/recover/emitter.mli b/src/ocaml/preprocess/recover/emitter.mli
index 962dd673d1..82c3807aba 100644
--- a/src/ocaml/preprocess/recover/emitter.mli
+++ b/src/ocaml/preprocess/recover/emitter.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk.Cmly_api
 
 module Make
diff --git a/src/ocaml/preprocess/recover/gen_recover.ml b/src/ocaml/preprocess/recover/gen_recover.ml
index d2f1f24da0..cd18ed7b88 100644
--- a/src/ocaml/preprocess/recover/gen_recover.ml
+++ b/src/ocaml/preprocess/recover/gen_recover.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk
 open Cmly_api
 
diff --git a/src/ocaml/preprocess/recover/recover_attrib.ml b/src/ocaml/preprocess/recover/recover_attrib.ml
index 0acd418c95..32ad00c7f3 100644
--- a/src/ocaml/preprocess/recover/recover_attrib.ml
+++ b/src/ocaml/preprocess/recover/recover_attrib.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk
 open Utils
 
diff --git a/src/ocaml/preprocess/recover/recover_attrib.mli b/src/ocaml/preprocess/recover/recover_attrib.mli
index 102f9a69ed..34a343c3ef 100644
--- a/src/ocaml/preprocess/recover/recover_attrib.mli
+++ b/src/ocaml/preprocess/recover/recover_attrib.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk
 
 module type S = sig
diff --git a/src/ocaml/preprocess/recover/recovery.ml b/src/ocaml/preprocess/recover/recovery.ml
index c634cdabb8..d41ae383cd 100644
--- a/src/ocaml/preprocess/recover/recovery.ml
+++ b/src/ocaml/preprocess/recover/recovery.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk
 open Cmly_api
 open Utils
diff --git a/src/ocaml/preprocess/recover/recovery.mli b/src/ocaml/preprocess/recover/recovery.mli
index 412b6d0e7c..47f25c3896 100644
--- a/src/ocaml/preprocess/recover/recovery.mli
+++ b/src/ocaml/preprocess/recover/recovery.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk.Cmly_api
 module type S = sig
   module G : GRAMMAR
diff --git a/src/ocaml/preprocess/recover/synthesis.ml b/src/ocaml/preprocess/recover/synthesis.ml
index f4039ab8be..997a912153 100644
--- a/src/ocaml/preprocess/recover/synthesis.ml
+++ b/src/ocaml/preprocess/recover/synthesis.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk.Cmly_api
 open Utils
 
diff --git a/src/ocaml/preprocess/recover/synthesis.mli b/src/ocaml/preprocess/recover/synthesis.mli
index 5836150d7e..ffdf0cedc6 100644
--- a/src/ocaml/preprocess/recover/synthesis.mli
+++ b/src/ocaml/preprocess/recover/synthesis.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk.Cmly_api
 
 module type S = sig
diff --git a/src/ocaml/preprocess/recover/utils.ml b/src/ocaml/preprocess/recover/utils.ml
index c9e056fd8a..f2910d01f9 100644
--- a/src/ocaml/preprocess/recover/utils.ml
+++ b/src/ocaml/preprocess/recover/utils.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open MenhirSdk
 
 let const c = fun _ -> c
diff --git a/src/ocaml/typing/magic_numbers.ml b/src/ocaml/typing/magic_numbers.ml
index 516f78b954..46af3945e8 100644
--- a/src/ocaml/typing/magic_numbers.ml
+++ b/src/ocaml/typing/magic_numbers.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 module Cmi = struct
diff --git a/src/ocaml/typing/path_aux.ml b/src/ocaml/typing/path_aux.ml
index 43d03d014d..8aa7b4f062 100644
--- a/src/ocaml/typing/path_aux.ml
+++ b/src/ocaml/typing/path_aux.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 let to_string_list p =
   let rec aux acc = function
   | Path.Pident id -> Ident.name id :: acc
diff --git a/src/platform/os_ipc.ml b/src/platform/os_ipc.ml
index 804f3a0e3f..72ebfe3165 100644
--- a/src/platform/os_ipc.ml
+++ b/src/platform/os_ipc.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type server
 type context
 
diff --git a/src/utils/bitfield.ml b/src/utils/bitfield.ml
index 7947219fb4..00e79f88fb 100644
--- a/src/utils/bitfield.ml
+++ b/src/utils/bitfield.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t = int64
 
 let max_idx = 63
diff --git a/src/utils/bitfield.mli b/src/utils/bitfield.mli
index 92a0d30953..ee68e10d7f 100644
--- a/src/utils/bitfield.mli
+++ b/src/utils/bitfield.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t
 
 val max_idx: int
diff --git a/src/utils/file_id.ml b/src/utils/file_id.ml
index d3c80e6570..94a41b0b8f 100644
--- a/src/utils/file_id.ml
+++ b/src/utils/file_id.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t = Unix.stats
 
 let null_stat =
diff --git a/src/utils/file_id.mli b/src/utils/file_id.mli
index b2f188895d..73b2405be4 100644
--- a/src/utils/file_id.mli
+++ b/src/utils/file_id.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t
 (** An instance of [t] represents the identity of the contents of a file path.
     Use this to quickly detect if a file has changed.
diff --git a/src/utils/local_store.ml b/src/utils/local_store.ml
index 9db1da0d94..53b88a5ffc 100644
--- a/src/utils/local_store.ml
+++ b/src/utils/local_store.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 type ref_and_reset = F : 'a ref * (unit -> 'a) -> ref_and_reset
diff --git a/src/utils/local_store.mli b/src/utils/local_store.mli
index 548618855d..416f3a6c62 100644
--- a/src/utils/local_store.mli
+++ b/src/utils/local_store.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type bindings
 val new_bindings : unit -> bindings
 
diff --git a/src/utils/marg.ml b/src/utils/marg.ml
index 7ed047aa0b..72cbc8976f 100644
--- a/src/utils/marg.ml
+++ b/src/utils/marg.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 (** {1 Flag parsing utils} *)
diff --git a/src/utils/marg.mli b/src/utils/marg.mli
index ae3fb27650..757853880c 100644
--- a/src/utils/marg.mli
+++ b/src/utils/marg.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 (** {0 Argument parsing library which fold over arguments}
 
     Specifications of arguments is split in two passes:
diff --git a/src/utils/sexp.ml b/src/utils/sexp.ml
index 17a8c91a9a..552a0981fb 100644
--- a/src/utils/sexp.ml
+++ b/src/utils/sexp.ml
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 type t =
   | Cons   of t * t
   | Sym    of string
diff --git a/src/utils/sexp.mli b/src/utils/sexp.mli
index 3801f3eadb..471b7024a6 100644
--- a/src/utils/sexp.mli
+++ b/src/utils/sexp.mli
@@ -1,3 +1,29 @@
+(* {{{ COPYING *(
+
+  This file is part of Merlin, an helper for ocaml editors
+
+  Copyright (C) 2013 - 2019  Merlin contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  The Software is provided "as is", without warranty of any kind, express or
+  implied, including but not limited to the warranties of merchantability,
+  fitness for a particular purpose and noninfringement. In no event shall
+  the authors or copyright holders be liable for any claim, damages or other
+  liability, whether in an action of contract, tort or otherwise, arising
+  from, out of or in connection with the software or the use or other dealings
+  in the Software.
+
+)* }}} *)
+
 open Std
 
 type t =