Fixed multiline quote. Simplified the quote source retrieving

boards/mdx_neboard.py

@@ -26,6 +26,8 b" ONE_NEWLINE = '\\n'"
 REGEX_URL = re.compile(r'https?\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(/\S*)?')
 LINE_BREAK_HTML = '<div class="br"></div>'
 SPOILER_SPACE = '&nbsp;'
+REGEX_ANY_LINE_BREAK = re.compile(r'(' + LINE_BREAK_HTML + '|\r|\n)')
+QUOTE_REPLACEMENT = '\g<1>&gt;'
 
 MAX_SPOILER_MULTIPLIER = 2
 MAX_SPOILER_SPACE_COUNT = 20
@@ -167,19 +169,14 b' def render_reflink(tag_name, value, opti'
 
 
 def render_quote(tag_name, value, options, parent, context):
-    source = ''
-    if 'source' in options:
-        source = options['source']
-    elif 'quote' in options:
-        source = options['quote']
+    source = options.get('quote') or options.get('source')
 
     if source:
         result = '<div class="multiquote"><div class="quote-header">%s</div><div class="quote-text">%s</div></div>' % (source, value)
     else:
         # Insert a ">" at the start of every line
         result = '<span class="quote">&gt;{}</span>'.format(
-                value.replace(LINE_BREAK_HTML,
-                    '{}&gt;'.format(LINE_BREAK_HTML)))
+            REGEX_ANY_LINE_BREAK.sub(QUOTE_REPLACEMENT, value))
 
     return result