1 files changed, 101 insertions, 0 deletions
diff --git a/src/test/pretty/block-comment-wchar.pp b/src/test/pretty/block-comment-wchar.pp
new file mode 100644
index 000000000..8c8580b07
--- /dev/null
+++ b/src/test/pretty/block-comment-wchar.pp
@@ -0,0 +1,101 @@
+// This is meant as a test case for Issue 3961.
+//
+// Test via: rustc -Zunpretty normal src/test/pretty/block-comment-wchar.rs
+// ignore-tidy-cr
+// ignore-tidy-tab
+// pp-exact:block-comment-wchar.pp
+fn f() {
+    fn nested() {
+        /*
+          Spaced2
+        */
+        /*
+          Spaced10
+        */
+        /*
+          Tabbed8+2
+        */
+        /*
+          CR8+2
+        */
+    }
+    /*
+      Spaced2:                       (prefixed so start of space aligns with comment)
+    */
+    /*
+    		Tabbed2: (more indented b/c *start* of space will align with comment)
+    */
+    /*
+      Spaced6:                       (Alignment removed and realigning spaces inserted)
+    */
+    /*
+      Tabbed4+2:                     (Alignment removed and realigning spaces inserted)
+    */
+
+    /*
+      VT4+2:                         (should align)
+    */
+    /*
+      FF4+2:                         (should align)
+    */
+    /*
+      CR4+2:                         (should align)
+    */
+    /*
+      NEL4+2:                        (should align)
+    */
+    /*
+      Ogham Space Mark 4+2:          (should align)
+    */
+    /*
+      Ogham Space Mark 4+2: (should align)
+    */
+    /*
+      Four-per-em space 4+2:         (should align)
+    */
+
+    /*
+      Ogham Space Mark   count 1: (should align)
+      Ogham Space Mark   count 2: (should align)
+      Ogham Space Mark   count 3: (should align)
+      Ogham Space Mark   count 4: (should align)
+      Ogham Space Mark   count 5: (should align)
+      Ogham Space Mark   count 6: (should align)
+      Ogham Space Mark   count 7: (should align)
+      Ogham Space Mark   count 8: (should align)
+      Ogham Space Mark   count 9: (should align)
+      Ogham Space Mark   count A: (should align)
+      Ogham Space Mark   count B: (should align)
+      Ogham Space Mark   count C: (should align)
+      Ogham Space Mark   count D: (should align)
+      Ogham Space Mark   count E: (should align)
+      Ogham Space Mark   count F: (should align)
+    */
+
+
+    /* */
+
+    /*
+      Hello from offset 6
+      Space 6+2:                     compare A
+      Ogham Space Mark 6+2: compare B
+    */
+    /* */
+
+    /*
+      Hello from another offset 6 with wchars establishing column offset
+      Space 6+2:                     compare C
+      Ogham Space Mark 6+2: compare D
+    */
+}
+
+fn main() {
+    // Taken from https://www.unicode.org/Public/UNIDATA/PropList.txt
+    let chars =
+        ['\x0A', '\x0B', '\x0C', '\x0D', '\x20', '\u{85}', '\u{A0}',
+                '\u{1680}', '\u{2000}', '\u{2001}', '\u{2002}', '\u{2003}',
+                '\u{2004}', '\u{2005}', '\u{2006}', '\u{2007}', '\u{2008}',
+                '\u{2009}', '\u{200A}', '\u{2028}', '\u{2029}', '\u{202F}',
+                '\u{205F}', '\u{3000}'];
+    for c in &chars { let ws = c.is_whitespace(); println!("{} {}", c, ws); }
+}