From 6045f1d23ad16946fa77243fc3d535257f87a507 Mon Sep 17 00:00:00 2001
From: Lu Guanqun <guanqun.lu@gmail.com>
Date: Sun, 1 Mar 2015 20:10:19 -0600
Subject: [PATCH] let the error output take tab into consideration

---
 libsolidity/SourceReferenceFormatter.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/libsolidity/SourceReferenceFormatter.cpp b/libsolidity/SourceReferenceFormatter.cpp
index 489a676ed..b5e83b8c9 100644
--- a/libsolidity/SourceReferenceFormatter.cpp
+++ b/libsolidity/SourceReferenceFormatter.cpp
@@ -44,8 +44,14 @@ void SourceReferenceFormatter::printSourceLocation(ostream& _stream,
 	tie(endLine, endColumn) = _scanner.translatePositionToLineColumn(_location.end);
 	if (startLine == endLine)
 	{
-		_stream << _scanner.getLineAtPosition(_location.start) << endl
-				<< string(startColumn, ' ') << "^";
+		string line = _scanner.getLineAtPosition(_location.start);
+		_stream << line << endl;
+		std::for_each(line.cbegin(), line.cbegin() + startColumn,
+			[&_stream](char const& ch)
+			{
+				_stream << (ch == '\t' ? '\t' : ' ');
+			});
+		_stream << "^";
 		if (endColumn > startColumn + 2)
 			_stream << string(endColumn - startColumn - 2, '-');
 		if (endColumn > startColumn + 1)