From fb42853d2788c51470a0148b6d95aecb93b027cd Mon Sep 17 00:00:00 2001
From: Bjorn Winckler <bjorn.winckler@gmail.com>
Date: Fri, 31 Aug 2007 07:37:44 +0000
Subject: [PATCH] U+2028 and U+2029 render as squares instead of causing line
 break.

git-svn-id: http://macvim.googlecode.com/svn/trunk@222 96c4425d-ca35-0410-94e5-3396d5c13a8f
---
 MMTextStorage.h |  2 ++
 MMTextStorage.m | 10 ++++++++++
 MMTypesetter.m  | 18 ++++++++++++++++++
 3 files changed, 30 insertions(+)

diff --git a/MMTextStorage.h b/MMTextStorage.h
index 0768793ca5..b2b619fd5b 100644
--- a/MMTextStorage.h
+++ b/MMTextStorage.h
@@ -36,6 +36,8 @@
 
 - (int)maxRows;
 - (int)maxColumns;
+- (int)actualRows;
+- (int)actualColumns;
 - (void)getMaxRows:(int*)rows columns:(int*)cols;
 - (void)setMaxRows:(int)rows columns:(int)cols;
 - (void)replaceString:(NSString *)string atRow:(int)row column:(int)col
diff --git a/MMTextStorage.m b/MMTextStorage.m
index 8694d54195..ede428935a 100644
--- a/MMTextStorage.m
+++ b/MMTextStorage.m
@@ -143,6 +143,16 @@
     return maxColumns;
 }
 
+- (int)actualRows
+{
+    return actualRows;
+}
+
+- (int)actualColumns
+{
+    return actualColumns;
+}
+
 - (void)getMaxRows:(int*)rows columns:(int*)cols
 {
     if (rows) *rows = maxRows;
diff --git a/MMTypesetter.m b/MMTypesetter.m
index 388107dd9c..e847892d3d 100644
--- a/MMTypesetter.m
+++ b/MMTypesetter.m
@@ -13,6 +13,8 @@
 #import "MacVim.h"
 
 
+#define MM_USE_LINERANGE 0
+
 
 #if 0
 @interface MMTypesetter (Private)
@@ -61,6 +63,7 @@
     unsigned i, numberOfLines = 0, firstLine = 0;
     NSRange firstLineRange = { 0, 0 };
 
+#if MM_USE_LINERANGE
     // Find the first line and its range, and count the number of lines.  (This
     // info could also be gleaned from MMTextStorage, but we do it here anyway
     // to make absolutely sure everything is right.)
@@ -73,6 +76,14 @@
 
         i = NSMaxRange(lineRange);
     }
+#else
+    unsigned stride = 1 + [ts actualColumns];
+    numberOfLines = [ts actualRows];
+    firstLine = (unsigned)(startCharIdx/stride);
+    firstLineRange.location =  firstLine * stride;
+    unsigned len = [text length] - firstLineRange.location;
+    firstLineRange.length = len < stride ? len : stride;
+#endif
 
     // Perform line fragment generation one line at a time.
     NSRange lineRange = firstLineRange;
@@ -105,7 +116,14 @@
             }
         }
 
+#if MM_USE_LINERANGE
         lineRange = [text lineRangeForRange:NSMakeRange(endLineIdx, 0)];
+#else
+        lineRange.location = endLineIdx;
+        len = [text length] - lineRange.location;
+        if (len < lineRange.length)
+            lineRange.length = len;
+#endif
     }
 
     if (nextGlyph)