fix suppressed console output not suppressing newlines

docs/release-notes.md

@@ -5,6 +5,7 @@
 * For players:
   * SMAPI now auto-fixes maps loaded without a required tilesheet to prevent errors.
   * Added the new game build number to the SMAPI console + log.
+  * Fixed extra newlines shown in the console in non-developer mode.
   * Fixed outdated instructions in Steam error message.
   * Fixed uninstaller not removing `StardewModdingAPI.deps.json` file.
   * Fixed launch issue on macOS when using some terminals (thanks to bruce2409!).

src/SMAPI/Framework/Logging/InterceptingTextWriter.cs

@@ -26,6 +26,10 @@ namespace StardewModdingAPI.Framework.Logging
         /// <summary>The event raised when a message is written to the console directly.</summary>
         public event Action<string> OnMessageIntercepted;
 
+        /// <summary>Whether the text writer should ignore the next input if it's a newline.</summary>
+        /// <remarks>This is used when log output is suppressed from the console, since <c>Console.WriteLine</c> writes the trailing newline as a separate call.</remarks>
+        public bool IgnoreNextIfNewline { get; set; }
+
 
         /*********
         ** Public methods
@@ -42,12 +46,18 @@ namespace StardewModdingAPI.Framework.Logging
         /// <inheritdoc />
         public override void Write(char[] buffer, int index, int count)
         {
+            bool ignoreIfNewline = this.IgnoreNextIfNewline;
+            this.IgnoreNextIfNewline = false;
+
             if (buffer.Length == 0)
                 this.Out.Write(buffer, index, count);
             else if (buffer[0] == this.IgnoreChar)
                 this.Out.Write(buffer, index + 1, count - 1);
             else if (this.IsEmptyOrNewline(buffer))
+            {
+                if (!ignoreIfNewline)
                     this.Out.Write(buffer, index, count);
+            }
             else
                 this.OnMessageIntercepted?.Invoke(new string(buffer, index, count).TrimEnd('\r', '\n'));
         }

src/SMAPI/Framework/Logging/LogManager.cs

@@ -22,9 +22,15 @@ namespace StardewModdingAPI.Framework.Logging
         /*********
         ** Fields
         *********/
+        /// <summary>Whether to show trace messages in the console.</summary>
+        private readonly bool ShowTraceInConsole;
+
         /// <summary>The log file to which to write messages.</summary>
         private readonly LogFileManager LogFile;
 
+        /// <summary>The text writer which intercepts console output.</summary>
+        private readonly InterceptingTextWriter ConsoleInterceptor;
+
         /// <summary>Prefixing a low-level message with this character indicates that the console interceptor should write the string without intercepting it. (The character itself is not written.)</summary>
         private readonly char IgnoreChar = '\u200B';
 
@@ -91,10 +97,11 @@ namespace StardewModdingAPI.Framework.Logging
         public LogManager(string logPath, ColorSchemeConfig colorConfig, bool writeToConsole, bool isVerbose, bool isDeveloperMode, Func<int?> getScreenIdForLog)
         {
             // init construction logic
+            this.ShowTraceInConsole = isDeveloperMode;
             this.GetMonitorImpl = name => new Monitor(name, this.IgnoreChar, this.LogFile, colorConfig, isVerbose, getScreenIdForLog)
             {
                 WriteToConsole = writeToConsole,
-                ShowTraceInConsole = isDeveloperMode,
+                ShowTraceInConsole = this.ShowTraceInConsole,
                 ShowFullStampInConsole = isDeveloperMode
             };
 
@@ -104,10 +111,10 @@ namespace StardewModdingAPI.Framework.Logging
             this.MonitorForGame = this.GetMonitor("game");
 
             // redirect direct console output
-            var output = new InterceptingTextWriter(Console.Out, this.IgnoreChar);
+            this.ConsoleInterceptor = new InterceptingTextWriter(Console.Out, this.IgnoreChar);
             if (writeToConsole)
-                output.OnMessageIntercepted += message => this.HandleConsoleMessage(this.MonitorForGame, message);
-            Console.SetOut(output);
+                this.ConsoleInterceptor.OnMessageIntercepted += message => this.HandleConsoleMessage(this.MonitorForGame, message);
+            Console.SetOut(this.ConsoleInterceptor);
 
             // enable Unicode handling on Windows
             // (the terminal defaults to UTF-8 on Linux/macOS)
@@ -363,7 +370,10 @@ namespace StardewModdingAPI.Framework.Logging
 
             // ignore suppressed message
             if (level != LogLevel.Error && this.SuppressConsolePatterns.Any(p => p.IsMatch(message)))
+            {
+                this.ConsoleInterceptor.IgnoreNextIfNewline = true;
                 return;
+            }
 
             // show friendly error if applicable
             foreach (ReplaceLogPattern entry in this.ReplaceConsolePatterns)
@@ -383,6 +393,8 @@ namespace StardewModdingAPI.Framework.Logging
 
             // forward to monitor
             gameMonitor.Log(message, level);
+            if (level == LogLevel.Trace && !this.ShowTraceInConsole)
+                this.ConsoleInterceptor.IgnoreNextIfNewline = true;
         }
 
         /// <summary>Write a summary of mod warnings to the console and log.</summary>