--showConfig files list condition was inverted from what it needed to be (#28693)

* --showConfig files list condition was inverted from what it needed to be

* Make no assumptions about file list normalization

* accept updated, correct, baseline

Author: weswigham

src/compiler/commandLineParser.ts

@@ -1673,13 +1673,13 @@ namespace ts {
         const files = map(
             filter(
                 configParseResult.fileNames,
-                !configParseResult.configFileSpecs ? _ => false : matchesSpecs(
+                (!configParseResult.configFileSpecs || !configParseResult.configFileSpecs.validatedIncludeSpecs) ? _ => true : matchesSpecs(
                     configFileName,
                     configParseResult.configFileSpecs.validatedIncludeSpecs,
                     configParseResult.configFileSpecs.validatedExcludeSpecs
                 )
             ),
-            f => getRelativePathFromFile(getNormalizedAbsolutePath(configFileName, host.getCurrentDirectory()), f, getCanonicalFileName)
+            f => getRelativePathFromFile(getNormalizedAbsolutePath(configFileName, host.getCurrentDirectory()), getNormalizedAbsolutePath(f, host.getCurrentDirectory()), getCanonicalFileName)
         );
         const optionMap = serializeCompilerOptions(configParseResult.options, { configFilePath: getNormalizedAbsolutePath(configFileName, host.getCurrentDirectory()), useCaseSensitiveFileNames: host.useCaseSensitiveFileNames });
         const config = {
@@ -1713,20 +1713,20 @@ namespace ts {
     }
 
     function matchesSpecs(path: string, includeSpecs: ReadonlyArray<string> | undefined, excludeSpecs: ReadonlyArray<string> | undefined): (path: string) => boolean {
-        if (!includeSpecs) return _ => false;
+        if (!includeSpecs) return _ => true;
         const patterns = getFileMatcherPatterns(path, excludeSpecs, includeSpecs, sys.useCaseSensitiveFileNames, sys.getCurrentDirectory());
         const excludeRe = patterns.excludePattern && getRegexFromPattern(patterns.excludePattern, sys.useCaseSensitiveFileNames);
         const includeRe = patterns.includeFilePattern && getRegexFromPattern(patterns.includeFilePattern, sys.useCaseSensitiveFileNames);
         if (includeRe) {
             if (excludeRe) {
-                return path => includeRe.test(path) && !excludeRe.test(path);
+                return path => !(includeRe.test(path) && !excludeRe.test(path));
             }
-            return path => includeRe.test(path);
+            return path => !includeRe.test(path);
         }
         if (excludeRe) {
-            return path => !excludeRe.test(path);
+            return path => excludeRe.test(path);
         }
-        return _ => false;
+        return _ => true;
     }
 
     function getCustomTypeMapOfCommandLineOption(optionDefinition: CommandLineOption): Map<string | number> | undefined {

tests/baselines/reference/showConfig/Show TSConfig with files options/tsconfig.json

@@ -1,3 +1,8 @@
 {
-    "compilerOptions": {}
+    "compilerOptions": {},
+    "files": [
+        "./file0.st",
+        "./file1.ts",
+        "./file2.ts"
+    ]
 }