From 187c77679851292e1d8cc199a440d10f164ab185 Mon Sep 17 00:00:00 2001
From: Haitao Li <lihaitao@gmail.com>
Date: Thu, 24 Nov 2011 14:58:38 +0800
Subject: [PATCH] rustc: Fix position of diagnostic highlight lines

Diagnostic highlight lines are incorrect placed when the related line
number is 10, 100, etc.

The root cause is line number are treated as 0 based (should be 1 based)
when calculating offset of line number digits.
---
 src/comp/syntax/codemap.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/comp/syntax/codemap.rs b/src/comp/syntax/codemap.rs
index cd48deba5113..106a4dae46a4 100644
--- a/src/comp/syntax/codemap.rs
+++ b/src/comp/syntax/codemap.rs
@@ -193,7 +193,7 @@ fn maybe_highlight_lines(sp: option::t<span>, cm: codemap,
         if vec::len(lines.lines) == 1u {
             let lo = lookup_char_pos(cm, option::get(sp).lo);
             let digits = 0u;
-            let num = lines.lines[0] / 10u;
+            let num = (lines.lines[0] + 1u) / 10u;
 
             // how many digits must be indent past?
             while num > 0u { num /= 10u; digits += 1u; }