Add feature for emphasizing some lines in a code block.

A code blocked headed by “:::python{1,3}” now emphasizes the first and third lines. With fences enabled, ```python{1,3} has the same effect.

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/test_extensions.py b/tests/test_extensions.py
index add759a..e918695 100644
--- a/tests/test_extensions.py
+++ b/tests/test_extensions.py
@@ -126,12 +126,33 @@ class TestCodeHilite(unittest.TestCase):
                 '<pre class="codehilite"><code class="language-python"># A Code Comment'
                 '</code></pre>')
 
+    def testHighlightLinesWithColon(self):
+        text = '\t:::Python{2}\n\t#line 1\n\t#line 2\n\t#line 3'
+
+        md = markdown.Markdown(extensions=['codehilite'])
+        if self.has_pygments:
+            self.assertEqual(md.convert(text),
+                '<div class="codehilite"><pre>'
+                '<span class="c">#line 1</span>\n'
+                '<span class="hll"><span class="c">#line 2</span>\n</span>'
+                '<span class="c">#line 3</span>\n'
+                '</pre></div>')
+        else:
+            self.assertEqual(md.convert(text),
+                '<pre class="codehilite"><code class="language-python">#line 1\n'
+                '#line 2\n'
+                '#line 3</code></pre>')
 
 class TestFencedCode(unittest.TestCase):
     """ Test fenced_code extension. """
 
     def setUp(self):
         self.md = markdown.Markdown(extensions=['fenced_code'])
+        self.has_pygments = True
+        try:
+            import pygments
+        except ImportError:
+            self.has_pygments = False
 
     def testBasicFence(self):
         """ Test Fenced Code Blocks. """
@@ -191,6 +212,32 @@ Fenced code block
         '~~~~~ # these tildes will not close the block\n'
         '</code></pre>')
 
+    def testFencedCodeWithHighlightLines(self):
+        """ Test Fenced Code with Highlighted Lines. """
+
+        text = '''
+```{1,3}
+line 1
+line 2
+line 3
+```'''
+        md = markdown.Markdown(extensions=[
+            'codehilite(linenums=None,guess_lang=False)',
+            'fenced_code'])
+
+        if self.has_pygments:
+            self.assertEqual(md.convert(text),
+                '<div class="codehilite"><pre>'
+                '<span class="hll">line 1\n</span>'
+                'line 2\n'
+                '<span class="hll">line 3\n</span>'
+                '</pre></div>')
+        else:
+            self.assertEqual(md.convert(text),
+                '<pre class="codehilite"><code>line 1\n'
+                'line 2\n'
+                'line 3</code></pre>')
+
 class TestHeaderId(unittest.TestCase):
     """ Test HeaderId Extension. """