dartfmt line wrapping bypass option support.

pkg/analyzer/lib/src/services/writer.dart

Index: pkg/analyzer/lib/src/services/writer.dart
===================================================================
--- pkg/analyzer/lib/src/services/writer.dart	(revision 32022)
+++ pkg/analyzer/lib/src/services/writer.dart	(working copy)
@@ -5,10 +5,7 @@
 library source_writer;
 
 
-/// DEBUG flag indicating whether to use the experimental line-breaker
-const _USE_LINE_BREAKER = false;
 
-
 class Line {
 
   final tokens = <LineToken>[];
@@ -293,7 +290,7 @@
 
   SourceWriter({this.indentCount: 0, this.lineSeparator: NEW_LINE,
       bool useTabs: false, int spacesPerIndent: 2, int maxLineLength: 80}) {
-    if (_USE_LINE_BREAKER) {
+    if (maxLineLength > -1) {

[Brian Wilkerson, 2014/01/27 20:14:50]

Will the SimpleLineBreaker work if the line length is zero? If not, consider
changing the test to "maxLineLength > 0".

[lukechurch, 2014/01/27 20:39:44]

I agree (+1 seems loaded in this context ;))

Zero should be supported to also disable the line breaker

[pquitslund, 2014/01/27 22:23:37]

Good call.  Done!

[pquitslund, 2014/01/27 22:23:37]

Done.

       linePrinter = new SimpleLineBreaker(maxLineLength, (n) =>
           getIndentString(n, useTabs: useTabs, spacesPerIndent: spacesPerIndent));
     } else {