When a step throws an exception, we now accurately consider the entir…

…e file as linted, rather than just the first line.

lib/src/main/java/com/diffplug/spotless/Formatter.java

@@ -160,7 +160,7 @@ public List<Lint> lint(String content, File file) {
 					totalLints.addAll(lints);
 				}
 			} catch (Throwable e) {
-				totalLints.add(Lint.createFromThrowable(step, e));
+				totalLints.add(Lint.createFromThrowable(step, content, e));
 			}
 		}
 		if (totalLints.isEmpty()) {

lib/src/main/java/com/diffplug/spotless/Lint.java

@@ -173,7 +173,7 @@ public static void toFile(List<Lint> lints, File file) throws IOException {
 	}
 
 	/** Attempts to parse a line number from the given exception. */
-	static Lint createFromThrowable(FormatterStep step, Throwable e) {
+	static Lint createFromThrowable(FormatterStep step, String content, Throwable e) {
 		Throwable current = e;
 		while (current != null) {
 			String message = current.getMessage();
@@ -183,7 +183,8 @@ static Lint createFromThrowable(FormatterStep step, Throwable e) {
 			}
 			current = current.getCause();
 		}
-		return Lint.create(step.getName(), ThrowingEx.stacktrace(e), 1);
+		int numNewlines = (int) content.codePoints().filter(c -> c == '\n').count();
+		return Lint.create(step.getName(), ThrowingEx.stacktrace(e), 1, 1 + numNewlines);
 	}
 
 	private static int lineNumberFor(String message) {