Handle function arguments inside function calls.

lib/src/line_splitting/solve_state.dart

Index: lib/src/line_splitting/solve_state.dart
diff --git a/lib/src/line_splitting/solve_state.dart b/lib/src/line_splitting/solve_state.dart
index 04a9b1142caa0dd8aee8bef4d5f6032c7b20459f..b4197561aa9fc9912e3018ef00391b0d09e9c78c 100644
--- a/lib/src/line_splitting/solve_state.dart
+++ b/lib/src/line_splitting/solve_state.dart
@@ -218,7 +218,7 @@ class SolveState {
     // Lines that contain both bound and unbound rules must have the same
     // bound values.
     if (_boundRulesInUnboundLines.length !=
-    other._boundRulesInUnboundLines.length) {
+        other._boundRulesInUnboundLines.length) {
       return false;
     }
 
@@ -415,7 +415,6 @@ class SolveState {
     var hasUnbound = false;
 
     for (var i = 0; i < _splitter.chunks.length - 1; i++) {
-
       if (splits.shouldSplitAt(i)) {
         if (hasUnbound) _boundRulesInUnboundLines.addAll(boundInLine);
 
@@ -439,25 +438,23 @@ class SolveState {
   String toString() {
     var buffer = new StringBuffer();
 
-    buffer.writeAll(
-        _splitter.rules.map((rule) {
-          var valueLength = "${rule.fullySplitValue}".length;
+    buffer.writeAll(_splitter.rules.map((rule) {
+      var valueLength = "${rule.fullySplitValue}".length;
 
-          var value = "?";
-          if (_ruleValues.contains(rule)) {
-            value = "${_ruleValues.getValue(rule)}";
-          }
+      var value = "?";
+      if (_ruleValues.contains(rule)) {
+        value = "${_ruleValues.getValue(rule)}";
+      }
 
-          value = value.padLeft(valueLength);
-          if (_liveRules.contains(rule)) {
-            value = debug.bold(value);
-          } else {
-            value = debug.gray(value);
-          }
+      value = value.padLeft(valueLength);
+      if (_liveRules.contains(rule)) {
+        value = debug.bold(value);
+      } else {
+        value = debug.gray(value);
+      }
 
-          return value;
-        }),
-        " ");
+      return value;
+    }), " ");
 
     buffer.write("   \$${splits.cost}");