From 7e7d67d8eed45bcf3908edd2f4ca864144fffad5 Mon Sep 17 00:00:00 2001
From: Meghan <hello@nektro.net>
Date: Thu, 19 Aug 2021 04:12:11 -0700
Subject: [PATCH] std.fmt: add support for printing slices strings (#9562)

---
 lib/std/fmt.zig | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/std/fmt.zig b/lib/std/fmt.zig
index 9ab111496c..5cbdc57832 100644
--- a/lib/std/fmt.zig
+++ b/lib/std/fmt.zig
@@ -544,6 +544,13 @@ pub fn formatType(
                             return formatText(value, actual_fmt, options, writer);
                         }
                     }
+                    if (comptime std.meta.trait.isZigString(info.child)) {
+                        for (value) |item, i| {
+                            if (i != 0) try formatText(", ", actual_fmt, options, writer);
+                            try formatText(item, actual_fmt, options, writer);
+                        }
+                        return;
+                    }
                     @compileError("Unknown format string: '" ++ actual_fmt ++ "' for type '" ++ @typeName(T) ++ "'");
                 },
                 .Enum, .Union, .Struct => {