Remove jbuild style diff comparison

This old mode would compare without newline normalization.

Signed-off-by: Rudi Grinberg <rudi.grinberg@gmail.com>

CHANGES.md

@@ -17,7 +17,7 @@
 
 - Enable `(explicit_js_mode)` by default. (#1941, @nojb)
 
-- Add an option to clear the console in-between builds with 
+- Add an option to clear the console in-between builds with
  `--terminal-persistence=clear-on-rebuild`
 
 - Stop symlinking object files to main directory for stanzas defined `jbuild`
@@ -43,6 +43,10 @@
 - Define (paths ...) fields in (context ...) definitions in order to set or
   extend any PATH-like variable in the context environment. (#2426, @nojb)
 
+- The `diff` action will always normalize newlines before diffing. Perviousy, it
+  would not do this normalization for rules defined in jbuild files. (#2457,
+  @rgrinberg)
+
 1.11.0 (23/07/2019)
 -------------------
 

src/diff.ml

@@ -4,15 +4,9 @@ module Mode = struct
   type t =
     | Binary
     | Text
-    | Text_jbuild
-
-  let of_kind : Dune_lang.File_syntax.t -> t =
-    function
-    | Jbuild -> Text_jbuild
-    | Dune   -> Text
 
   let compare_files = function
-    | Text_jbuild | Binary -> Io.compare_files
+    | Binary -> Io.compare_files
     | Text -> Io.compare_text_files
 end
 
@@ -27,10 +21,8 @@ let decode path ~optional =
   let open Dune_lang.Decoder in
   let+ file1 = path
   and+ file2 = path
-  and+ kind = Stanza.file_kind ()
   in
-  let mode = Mode.of_kind kind in
-  { optional ; file1; file2; mode }
+  { optional ; file1; file2; mode = Text }
 
 let decode_binary path =
   let open Dune_lang.Decoder in

src/diff.mli

@@ -6,7 +6,6 @@ module Mode : sig
   type t =
     | Binary      (** no diffing, just raw comparison      *)
     | Text        (** diffing after newline normalization  *)
-    | Text_jbuild (** diffing but no newline normalization *)
 end
 
 type 'path t =