fix: use local clang-format instead of globally installed one

Author: simschla

Diff for: testlib/src/main/java/com/diffplug/spotless/cli/ForeignExeMock.java

@@ -450,14 +450,22 @@ public ForeignExeMockWriter writeReadFromStdin() {
         // ─────────────── file → stdout (pad lines) ──────────────
         @Override
         public ForeignExeMockWriter writeWriteToStdout() {
-            output.println("for /f \"usebackq delims=\" %%L in (\"!stdin_file!\") do (");
-            output.println("    set \"line=%%L\"");
-            output.println("    echo(!line!| findstr /r \"    $\" >nul");
-            output.println("    if errorlevel 1 (");
-            output.println("        echo(!line!    ");
+            /*
+               - findstr /n /R ".*"  prefixes every line (even empty ones) with  N:
+               - we read each raw line (trailing blanks intact) into %%L
+               - strip everything up to the first colon:   set "line=%%L" & set "line=!line:*:=!"
+               - preserve / append four blanks with   <nul set /p   (echo would cut them)
+            */
+
+            output.println("for /f \"usebackq delims=\" %%L in (`findstr /n /R \".*\" \"!stdin_file!\"`) do (");
+            output.println("    set \"raw=%%L\"");
+            output.println("    set \"line=!raw:*:=!\""); // throw away leading  N:
+            output.println("    if \"!line:~-4!\"==\"    \" (");
+            output.println("        <nul set /p \"=!line!\""); // already padded
             output.println("    ) else (");
-            output.println("        echo(!line!");
+            output.println("        <nul set /p \"=!line!    \""); // add 4 blanks
             output.println("    )");
+            output.println("    echo("); // newline
             output.println(")");
             output.println("del \"!stdin_file!\" >nul 2>&1");
             output.println();

Diff for: testlib/src/test/java/com/diffplug/spotless/cli/ForeignExeMockTest.java

@@ -56,7 +56,8 @@ void itWritesAExecutableForeignExeMockThatWritesVersion() throws IOException, In
         File mock = createClangFormatForeignExeMock();
 
         try (ProcessRunner runner = new ProcessRunner()) {
-            ProcessRunner.Result result = runner.exec(rootFolder(), null, null, List.of(mock.getName(), "--version"));
+            ProcessRunner.Result result =
+                    runner.exec(rootFolder(), null, null, List.of(mock.getAbsolutePath(), "--version"));
             String output = result.assertExitZero(StandardCharsets.UTF_8);
             assertThat(output).contains("11.0.1");
         }
@@ -67,8 +68,8 @@ void itWritesAExecutableForeignExeMockThatChecksValidOptions() throws IOExceptio
         File mock = createClangFormatForeignExeMock();
 
         try (ProcessRunner runner = new ProcessRunner()) {
-            ProcessRunner.Result result =
-                    runner.exec(rootFolder(), null, null, List.of(mock.getName(), "--style", "invalid_style_value"));
+            ProcessRunner.Result result = runner.exec(
+                    rootFolder(), null, null, List.of(mock.getAbsolutePath(), "--style", "invalid_style_value"));
             assertThat(result.exitCode()).isNotEqualTo(0);
             assertThat(result.stdOutUtf8()).contains("invalid_style_value");
         }
@@ -80,7 +81,7 @@ void itWritesAExecutableForeignExeMockThatConsumesValidOption() throws IOExcepti
 
         try (ProcessRunner runner = new ProcessRunner()) {
             ProcessRunner.Result result =
-                    runner.exec(rootFolder(), null, null, List.of(mock.getName(), "--style", "LLVM"));
+                    runner.exec(rootFolder(), null, null, List.of(mock.getAbsolutePath(), "--style", "LLVM"));
             String output = result.assertExitZero(StandardCharsets.UTF_8);
         }
     }
@@ -102,13 +103,12 @@ int main(){
                     rootFolder(),
                     null,
                     input.getBytes(StandardCharsets.UTF_8),
-                    List.of(mock.getName(), "--style", "LLVM"));
+                    List.of(mock.getAbsolutePath(), "--style", "LLVM"));
             String output = result.assertExitZero(StandardCharsets.UTF_8);
             Selfie.expectSelfie(output).toBe("""
 int main(){   \s
 return 0;   \s
 }   \s
-   \s
 """);
         }
     }