From 40cbee8fa207c4b2d5918741493e015078d9b5fb Mon Sep 17 00:00:00 2001
From: Manlio Perillo <manlio.perillo@gmail.com>
Date: Mon, 1 May 2023 17:32:07 +0200
Subject: [PATCH] build: fix incorrect error handling in ZiglingStep.compile

When handling the error from the eval method, some possible errors are
ignored.  The make method will only print the exercise hint and the
help message.

Print the unexpected error message, in the else prong.
Note that FileNotFound can also be considered unexpected.
---
 build.zig | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/build.zig b/build.zig
index 519ab85..03fad4c 100644
--- a/build.zig
+++ b/build.zig
@@ -395,7 +395,16 @@ const ZiglingStep = struct {
                     for (argv) |v| print("{s} ", .{v});
                     print("\n", .{});
                 },
-                else => {},
+                else => {
+                    print("{s}{s}: Unexpected error: {s}{s}\n", .{
+                        red_text,
+                        self.exercise.main_file,
+                        @errorName(err),
+                        reset_text,
+                    });
+                    for (argv) |v| print("{s} ", .{v});
+                    print("\n", .{});
+                },
             }
 
             return err;