Improving spacing in printing disjunctive patterns.

Adding a space before the bar separating disjunctive patterns.
Removing an extra space after the bar for inner disjunctive patterns.

2 files changed, 4 insertions, 0 deletions

diff --git a/lib/pp.ml b/lib/pp.ml
index c3338688d..770e650cb 100644
--- a/lib/pp.ml
+++ b/lib/pp.ml
@@ -208,6 +208,7 @@ let string_of_ppcmds c =
 let pr_comma () = str "," ++ spc ()
 let pr_semicolon () = str ";" ++ spc ()
 let pr_bar () = str "|" ++ spc ()
+let pr_spcbar () = str " |" ++ spc ()
 let pr_arg pr x = spc () ++ pr x
 let pr_non_empty_arg pr x = let pp = pr x in if ismt pp then mt () else spc () ++ pr x
 let pr_opt pr = function None -> mt () | Some x -> pr_arg pr x
diff --git a/lib/pp.mli b/lib/pp.mli
index 2d11cad86..d9be1c5ce 100644
--- a/lib/pp.mli
+++ b/lib/pp.mli
@@ -120,6 +120,9 @@ val pr_semicolon : unit -> t
 val pr_bar : unit -> t
 (** Well-spaced pipe bar. *)
 
+val pr_spcbar : unit -> t
+(** Pipe bar with space before and after. *)
+
 val pr_arg : ('a -> t) -> 'a -> t
 (** Adds a space in front of its argument. *)