From d2db3b16d2c15d6b9b40f27dda02e6c0e6e13a7d Mon Sep 17 00:00:00 2001
From: Thomas Keller <me@thomaskeller.biz>
Date: Thu, 27 Oct 2011 23:32:18 +0200
Subject: [PATCH] Fix issue 748.

---
 src/IDF/Diff.php            | 18 +++++++++++++++---
 www/media/idf/css/style.css |  5 +++++
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/IDF/Diff.php b/src/IDF/Diff.php
index 798b0a8..6c76ce2 100644
--- a/src/IDF/Diff.php
+++ b/src/IDF/Diff.php
@@ -182,17 +182,29 @@ class IDF_Diff
             list($added, $removed) = end($file['chunks_def']);
 
             $added = $added[0] + $added[1];
-            $leftwidth = 1;
+            $leftwidth = 0;
             if ($added > 0)
                 $leftwidth = ((ceil(log10($added)) + 1) * 8) + 12;
 
             $removed = $removed[0] + $removed[1];
-            $rightwidth = 1;
+            $rightwidth = 0;
             if ($removed > 0)
                 $rightwidth = ((ceil(log10($removed)) + 1) * 8) + 12;
 
+            // we need to correct the width of a single column a little
+            // to take less space and to hide the empty one
+            $class = '';
+            if ($leftwidth == 0) {
+                $class = 'left-hidden';
+                $rightwidth -= floor(log10($removed));
+            }
+            else if ($rightwidth == 0) {
+                $class = 'right-hidden';
+                $leftwidth -= floor(log10($added));
+            }
+
             $inner_linecounts =
-              '<table class="diff-linecounts">' ."\n".
+              '<table class="diff-linecounts '.$class.'">' ."\n".
                 '<colgroup><col width="'.$leftwidth.'" /><col width="'. $rightwidth.'" /></colgroup>' ."\n".
                 '<tr class="line">' .
                   implode('</tr>'."\n".'<tr class="line">', $offsets).
diff --git a/www/media/idf/css/style.css b/www/media/idf/css/style.css
index 325cc24..e6dae6f 100644
--- a/www/media/idf/css/style.css
+++ b/www/media/idf/css/style.css
@@ -666,6 +666,11 @@ table.diff-linecounts td {
   border-left: 1px solid #d3d7cf;
 }
 
+table.diff-linecounts.left-hidden tr > td:first-child,
+table.diff-linecounts.right-hidden tr > td + td {
+  display: none;
+}
+
 table.diff-contents td {
   line-height: 12px;
   padding: 2px;