Commit 495d18a205

Andrew Kelley <andrew@ziglang.org>
2020-09-25 09:00:04
std.log: better default for printing logs
* prefix with the message level * if the scope is not default, also prefix with the scope This makes the stack trace test pass, with no changes to the test case, because errors returned from main() now print `error: Foo` just like they do in master branch.
master
1 parent 30dfdfd
Changed files (1)
lib
std
log.zig
lib/std/log.zig
@@ -132,10 +132,21 @@ fn log(
             // any I/O configured.
             return;
         } else if (builtin.mode != .ReleaseSmall) {
+            const level_txt = switch (message_level) {
+                .emerg => "emergency",
+                .alert => "alert",
+                .crit => "critical",
+                .err => "error",
+                .warn => "warning",
+                .notice => "notice",
+                .info => "info",
+                .debug => "debug",
+            };
+            const prefix2 = if (scope == .default) ": " else "(" ++ @tagName(scope) ++ "): ";
+            const stderr = std.io.getStdErr().writer();
             const held = std.debug.getStderrMutex().acquire();
             defer held.release();
-            const stderr = std.io.getStdErr().writer();
-            nosuspend stderr.print(format ++ "\n", args) catch return;
+            nosuspend stderr.print(level_txt ++ prefix2 ++ format ++ "\n", args) catch return;
         }
     }
 }