What does this do?

Author: piegamesde

src/Nixfmt/Pretty.hs

@@ -651,10 +651,10 @@ absorbRHS expr = case expr of
     | isAbsorbable t && isUpdateConcatPlus op ->
         nest $ group' RegularG $ line <> pretty l <> line <> group' Transparent (pretty op <> hardspace <> group' Priority (prettyTermWide t))
   -- Case 2b: LHS fits onto first line, RHS is a function application
-  (Operation l (LoneAnn op) (Application f a))
-    | isUpdateConcatPlus op
-        && matchFirstToken (not . hasPreTrivia) f ->
-        nest $ line <> group l <> line <> prettyApp False (pretty op <> hardspace) False f a
+  --(Operation l (LoneAnn op) (Application f a))
+  --  | isUpdateConcatPlus op
+  --      && matchFirstToken (not . hasPreTrivia) f ->
+  --      nest $ line <> group l <> line <> prettyApp False (pretty op <> hardspace) False f a
   -- Everything else:
   -- If it fits on one line, it fits
   -- If it fits on one line but with a newline after the `=`, it fits (including semicolon)

test/diff/attr_set/out-pure.nix

@@ -434,8 +434,7 @@
 
     environment.systemPackages =
       # Include the PAM modules in the system path mostly for the manpages.
-      [ package ]
-      ++ lib.optional config.users.ldap.enable pam_ldap;
+      [ package ] ++ lib.optional config.users.ldap.enable pam_ldap;
 
     environment.systemPackages2 =
       # Include the PAM modules in the system path mostly for the manpages.

test/diff/attr_set/out.nix

@@ -451,8 +451,7 @@
 
     environment.systemPackages =
       # Include the PAM modules in the system path mostly for the manpages.
-      [ package ]
-      ++ lib.optional config.users.ldap.enable pam_ldap;
+      [ package ] ++ lib.optional config.users.ldap.enable pam_ldap;
 
     environment.systemPackages2 =
       # Include the PAM modules in the system path mostly for the manpages.