fix tests

Author: plp127

tests/lean/Process.lean.expected.out

@@ -7,6 +7,6 @@
 0
 0
 0
-"<stdin>:1:0: warning: using \'exit\' to interrupt Lean\n"
+"<stdin>:1:0: warning: using 'exit' to interrupt Lean\n"
 none
 some 0

tests/lean/docStr.lean.expected.out

@@ -10,7 +10,7 @@ doc string for 'Boo.y' is not available
 "Tree.node documentation "
 "Tree.leaf stores the values "
 "documenting definition in namespace "
-"We can document \'where\' functions too\n\n... and indentation is stripped, even after an empty line. "
+"We can document 'where' functions too\n\n... and indentation is stripped, even after an empty line. "
 doc string for 'f' is not available
 "let rec documentation at f "
 doc string for 'g' is not available

tests/lean/run/IO_test.lean

@@ -85,7 +85,7 @@ info: ⟨[₂,α]⟩⟨[₂,α]⟩
 0
 "⟨[₂,α]⟩⟨[₂,α]⟩\n"
 1
-"/* Handle.getLine : Handle → IO Unit                     *//*   The line returned by `lean_io_prim_handle_get_line` *//*   is truncated at the first \'\\0\' character and the    *//*   rest of the line is discarded.                      */\n"
+"/* Handle.getLine : Handle → IO Unit                     *//*   The line returned by `lean_io_prim_handle_get_line` *//*   is truncated at the first '\\0' character and the    *//*   rest of the line is discarded.                      */\n"
 2
 "⟨[6,8,@]⟩\n"
 3

tests/lean/run/json_empty.lean

@@ -39,15 +39,15 @@ deriving Lean.ToJson, Lean.FromJson, Repr
 #eval Lean.fromJson? (α := Foo Empty) <| json% {"y": null}
 
 /-! Show that parsing fails -/
-/-- info: Except.error "type Empty has no constructor to match JSON value \'\"Yo!\"\'.
+/-- info: Except.error "type Empty has no constructor to match JSON value '\"Yo!\"'.
 This occurs when deserializing a value for type Empty, e.g. at type Option Empty with code
-for the \'some\' constructor." -/
+for the 'some' constructor." -/
 #guard_msgs in
 #eval Lean.fromJson? (α := Empty) <| json% "Yo!"
 
 /-! Show that parsing fails if we supply anything else but `null` -/
-/-- info: Except.error "Foo.y: type Empty has no constructor to match JSON value \'1\'.
+/-- info: Except.error "Foo.y: type Empty has no constructor to match JSON value '1'.
 This occurs when deserializing a value for type Empty, e.g. at type Option Empty with code
-for the \'some\' constructor." -/
+for the 'some' constructor." -/
 #guard_msgs in
 #eval Lean.fromJson? (α := Foo Empty) <| json% {"y": 1}