fix crash log deleted immediately on game relaunch

2 files changed, 19 insertions, 13 deletions

diff --git a/src/SMAPI/Constants.cs b/src/SMAPI/Constants.cs
index 83b17401..67f03fab 100644
--- a/src/SMAPI/Constants.cs
+++ b/src/SMAPI/Constants.cs
@@ -82,7 +82,7 @@ namespace StardewModdingAPI
         /// <summary>The filename extension for SMAPI log files.</summary>
         internal static string LogExtension { get; } = "txt";
 
-        /// <summary>A copy of the log leading up to the previous fatal crash, if any.</summary>
+        /// <summary>The file path for the log containing the previous fatal crash, if any.</summary>
         internal static string FatalCrashLog => Path.Combine(Constants.LogDir, "SMAPI-crash.txt");
 
         /// <summary>The file path which stores a fatal crash message for the next run.</summary>
diff --git a/src/SMAPI/Framework/SCore.cs b/src/SMAPI/Framework/SCore.cs
index e76e7a1d..3e8766c2 100644
--- a/src/SMAPI/Framework/SCore.cs
+++ b/src/SMAPI/Framework/SCore.cs
@@ -120,7 +120,7 @@ namespace StardewModdingAPI.Framework
             this.ModsPath = modsPath;
 
             // init log file
-            this.PurgeLogFiles();
+            this.PurgeNormalLogs();
             string logPath = this.GetLogPath();
 
             // init basics
@@ -1329,8 +1329,8 @@ namespace StardewModdingAPI.Framework
             throw new InvalidOperationException("Could not find an available log path.");
         }
 
-        /// <summary>Delete all log files created by SMAPI.</summary>
-        private void PurgeLogFiles()
+        /// <summary>Delete normal (non-crash) log files created by SMAPI.</summary>
+        private void PurgeNormalLogs()
         {
             DirectoryInfo logsDir = new DirectoryInfo(Constants.LogDir);
             if (!logsDir.Exists)
@@ -1338,16 +1338,22 @@ namespace StardewModdingAPI.Framework
 
             foreach (FileInfo logFile in logsDir.EnumerateFiles())
             {
-                if (logFile.Name.StartsWith(Constants.LogNamePrefix, StringComparison.InvariantCultureIgnoreCase))
+                // skip non-SMAPI file
+                if (!logFile.Name.StartsWith(Constants.LogNamePrefix, StringComparison.InvariantCultureIgnoreCase))
+                    continue;
+
+                // skip crash log
+                if (logFile.FullName == Constants.FatalCrashLog)
+                    continue;
+
+                // delete file
+                try
                 {
-                    try
-                    {
-                        FileUtilities.ForceDelete(logFile);
-                    }
-                    catch (IOException)
-                    {
-                        // ignore file if it's in use
-                    }
+                    FileUtilities.ForceDelete(logFile);
+                }
+                catch (IOException)
+                {
+                    // ignore file if it's in use
                 }
             }
         }