From ce97b911bbb4f90feb10f5f49f27b406bbd7a7ed Mon Sep 17 00:00:00 2001
From: Michael Pollmeier <michael@michaelpollmeier.com>
Date: Tue, 5 Sep 2023 17:28:52 +0200
Subject: [PATCH] rendering: when a string contains `\`, automatically change
 to `"""`

So that we don't need to escape it and it can be easily copy-pasted.

Old behaviour:
```scala
scala> """foo\bar"""
val res0: String = "foo\\bar"
```

New behaviour:
```scala
scala> """foo\bar"""
val res0: String = """foo\bar"""
```

Special thanks to @maltek for noticing and suggesting.
---
 pprint/src/pprint/Walker.scala                          | 2 +-
 pprint/test/src-3/test/src/pprint/HorizontalTests.scala | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/pprint/src/pprint/Walker.scala b/pprint/src/pprint/Walker.scala
index f11f7a8..2d6cfa8 100644
--- a/pprint/src/pprint/Walker.scala
+++ b/pprint/src/pprint/Walker.scala
@@ -66,7 +66,7 @@ abstract class Walker{
       case x: Float => Tree.Literal(x.toString + "F")
       case x: Double => Tree.Literal(x.toString)
       case x: String =>
-        if (x.exists(c => c == '\n' || c == '\r')) Tree.Literal("\"\"\"" + x + "\"\"\"")
+        if (x.exists(c => c == '\n' || c == '\r' || c == '\\')) Tree.Literal("\"\"\"" + x + "\"\"\"")
         else Tree.Literal(Util.literalize(x, escapeUnicode))
 
       case x: Symbol => Tree.Literal("'" + x.name)
diff --git a/pprint/test/src-3/test/src/pprint/HorizontalTests.scala b/pprint/test/src-3/test/src/pprint/HorizontalTests.scala
index 70f4b54..9db13df 100644
--- a/pprint/test/src-3/test/src/pprint/HorizontalTests.scala
+++ b/pprint/test/src-3/test/src/pprint/HorizontalTests.scala
@@ -46,6 +46,7 @@ object HorizontalTests extends TestSuite{
           val tq = "\"\"\""
           test - Check("i am a cow", """ "i am a cow" """)
           test - Check( """ "hello" """.trim, """ "\"hello\"" """.trim)
+          test - Check( """foo\bar""".trim, " \"\"\"foo\\bar\"\"\" ".trim)
 
           test - Check("\n", s"""
           |$tq