From 9de04ff5b4fbdcf37cae89d9275aaf945f58bd6b Mon Sep 17 00:00:00 2001
From: Andrew Garrett <werdna@users.mediawiki.org>
Date: Thu, 9 Jul 2009 15:17:56 +0000
Subject: [PATCH] * Allow leading-> as syntax for quoting.

---
 includes/parser/Parser.php  | 18 ++++++++++++++++--
 maintenance/parserTests.txt | 22 ++++++++++++++++++++--
 2 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/includes/parser/Parser.php b/includes/parser/Parser.php
index f4fc48455d..dbc6e39823 100644
--- a/includes/parser/Parser.php
+++ b/includes/parser/Parser.php
@@ -1947,7 +1947,7 @@ class Parser
 		elseif ( ';' === $char ) {
 			$result .= '<dl><dt>';
 			$this->mDTopen = true;
-		}
+		} elseif ( '>' === $char ) { $result .= "<blockquote><p>"; }
 		else { $result = '<!-- ERR 1 -->'; }
 
 		return $result;
@@ -1955,6 +1955,7 @@ class Parser
 
 	/* private */ function nextItem( $char ) {
 		if ( '*' === $char || '#' === $char ) { return '</li><li>'; }
+		elseif ( '>' === $char ) { return "</p><p>"; }
 		elseif ( ':' === $char || ';' === $char ) {
 			$close = '</dd>';
 			if ( $this->mDTopen ) { $close = '</dt>'; }
@@ -1972,6 +1973,7 @@ class Parser
 	/* private */ function closeList( $char ) {
 		if ( '*' === $char ) { $text = '</li></ul>'; }
 		elseif ( '#' === $char ) { $text = '</li></ol>'; }
+		elseif ( '>' === $char ) { $text = "</p></blockquote>"; }
 		elseif ( ':' === $char ) {
 			if ( $this->mDTopen ) {
 				$this->mDTopen = false;
@@ -2017,14 +2019,23 @@ class Parser
 			// # = ol
 			// ; = dt
 			// : = dd
+			// > = blockquote
 
 			$lastPrefixLength = strlen( $lastPrefix );
 			$preCloseMatch = preg_match('/<\\/pre/i', $oLine );
 			$preOpenMatch = preg_match('/<pre/i', $oLine );
+			
+			// Need to decode &gt; --> > for blockquote syntax. Re-encode later.
+			// To avoid collision with real >s, we temporarily convert them to &gt;
+			// This is a weird choice of armouring, but it's totally resistant to any
+			//  collision.
+			$orig = $oLine;
+			$oLine = strtr( $oLine, array( '&gt;' => '>', '>' => '&gt;' ) );
+			
 			// If not in a <pre> element, scan for and figure out what prefixes are there.
 			if ( !$this->mInPre ) {
 				# Multiple prefixes may abut each other for nested lists.
-				$prefixLength = strspn( $oLine, '*#:;' );
+				$prefixLength = strspn( $oLine, '*#:;>' );
 				$prefix = substr( $oLine, 0, $prefixLength );
 
 				# eh?
@@ -2040,6 +2051,9 @@ class Parser
 				$prefix = $prefix2 = '';
 				$t = $oLine;
 			}
+			
+			// Re-encode >s now
+			$t = strtr( $t, array( '&gt;' => '>', '>' => '&gt;' ) );
 
 			# List generation
 			if( $prefixLength && $lastPrefix === $prefix2 ) {
diff --git a/maintenance/parserTests.txt b/maintenance/parserTests.txt
index 3771941b6c..e7ebd96e38 100644
--- a/maintenance/parserTests.txt
+++ b/maintenance/parserTests.txt
@@ -6550,9 +6550,9 @@ RAW magic word
 !! test
 Always escape literal '>' in output, not just after '<'
 !! input
-><>
+test ><>
 !! result
-<p>&gt;&lt;&gt;
+<p>test &gt;&lt;&gt;
 </p>
 !! end
 
@@ -7320,6 +7320,24 @@ wgUseDynamicDates=true
 </p>
 !! end
 
+!! test
+Leading > blockquote syntax
+!! input
+> Hi
+> This
+> Is
+> A
+> Quote
+!! result
+<blockquote><p> Hi
+</p><p> This
+</p><p> Is
+</p><p> A
+</p><p> Quote
+</p></blockquote>
+
+!! end
+
 #
 #
 #
-- 
2.20.1