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Ensure consistent handling of classes by fenced_code and codehilite #1033

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Oct 8, 2020
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Ensure consistent handling of classes by fenced_code and codehilite #1033

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4 changes: 4 additions & 0 deletions docs/change_log/index.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,10 @@ title: Change Log
Python-Markdown Change Log
=========================

Under development: version 3.3.1 (a bug-fix release).

* Ensure consistent class handling by `fenced_code` and `codehilite` (#1032).

Oct 6, 2020: version 3.3 ([Notes](release-3.3.md)).

May 8, 2020: version 3.2.2 (a bug-fix release).
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4 changes: 2 additions & 2 deletions docs/extensions/fenced_code_blocks.md
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Expand Up @@ -130,13 +130,13 @@ In addition to the language, additional classes may be defined by prefixing them
````

When defining multiple classes, only the first class will be used as the "language" for the code block. All others are
assigned to the `<code>` tag unaltered. Additionally, the curly braces and dot are required for all classes, including
assigned to the `<pre>` tag unaltered. Additionally, the curly braces and dot are required for all classes, including
the language class if more than one class is defined.

The above example will output the following HTML:

```html
<pre><code class="language-html foo bar">&lt;p&gt;HTML Document&lt;/p&gt;
<pre class="foo bar"><code class="language-html">&lt;p&gt;HTML Document&lt;/p&gt;
</code></pre>
```

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15 changes: 7 additions & 8 deletions markdown/extensions/fenced_code.py
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Expand Up @@ -88,11 +88,10 @@ def run(self, lines):
if m.group('attrs'):
id, classes, config = self.handle_attrs(get_attrs(m.group('attrs')))
if len(classes):
lang = classes[0]
lang = classes.pop(0)
else:
if m.group('lang'):
lang = m.group('lang')
classes.append(lang)
if m.group('hl_lines'):
# Support hl_lines outside of attrs for backward-compatibility
config['hl_lines'] = parse_hl_lines(m.group('hl_lines'))
Expand All @@ -119,12 +118,11 @@ def run(self, lines):

code = highliter.hilite()
else:
id_attr = class_attr = kv_pairs = ''
id_attr = lang_attr = class_attr = kv_pairs = ''
if lang:
lang_attr = ' class="{}{}"'.format(self.config.get('lang_prefix', 'language-'), lang)
if classes:
class_attr = ' class="{}{}"'.format(
self.config.get('lang_prefix', 'language-'),
' '.join(classes)
)
class_attr = ' class="{}"'.format(' '.join(classes))
if id:
id_attr = ' id="{}"'.format(id)
if self.use_attr_list and config and not config.get('use_pygments', False):
Expand All @@ -134,9 +132,10 @@ def run(self, lines):
kv_pairs = ' ' + ' '.join(
'{k}="{v}"'.format(k=k, v=v) for k, v in config.items() if k != 'use_pygments'
)
code = '<pre{id}><code{cls}{kv}>{code}</code></pre>'.format(
code = '<pre{id}{cls}><code{lang}{kv}>{code}</code></pre>'.format(
id=id_attr,
cls=class_attr,
lang=lang_attr,
kv=kv_pairs,
code=self._escape(m.group('code'))
)
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34 changes: 17 additions & 17 deletions tests/test_syntax/extensions/test_fenced_code.py
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Expand Up @@ -168,7 +168,7 @@ def testFencedCodeWithHighlightLines(self):
def testFencedLanguageAndHighlightLines(self):
if self.has_pygments:
expected = (
'<div class="python codehilite"><pre><span></span><code>'
'<div class="codehilite"><pre><span></span><code>'
'<span class="hll"><span class="n">line</span> <span class="mi">1</span>\n'
'</span><span class="n">line</span> <span class="mi">2</span>\n'
'<span class="hll"><span class="n">line</span> <span class="mi">3</span>\n'
Expand All @@ -177,7 +177,7 @@ def testFencedLanguageAndHighlightLines(self):
else:
expected = self.dedent(
'''
<pre class="python codehilite"><code class="language-python">line 1
<pre class="codehilite"><code class="language-python">line 1
line 2
line 3
</code></pre>
Expand Down Expand Up @@ -224,7 +224,7 @@ def testFencedLanguageAndPygmentsDisabled(self):
def testFencedLanguageDoubleEscape(self):
if self.has_pygments:
expected = (
'<div class="html codehilite"><pre><span></span><code>'
'<div class="codehilite"><pre><span></span><code>'
'<span class="p">&lt;</span><span class="nt">span</span>'
'<span class="p">&gt;</span>This<span class="ni">&amp;amp;</span>'
'That<span class="p">&lt;/</span><span class="nt">span</span>'
Expand All @@ -233,7 +233,7 @@ def testFencedLanguageDoubleEscape(self):
)
else:
expected = (
'<pre class="html codehilite"><code class="language-html">'
'<pre class="codehilite"><code class="language-html">'
'&lt;span&gt;This&amp;amp;That&lt;/span&gt;\n'
'</code></pre>'
)
Expand All @@ -256,7 +256,7 @@ def testFencedAmps(self):
if self.has_pygments:
expected = self.dedent(
'''
<div class="text codehilite"><pre><span></span><code>&amp;
<div class="codehilite"><pre><span></span><code>&amp;
&amp;amp;
&amp;amp;amp;
</code></pre></div>
Expand All @@ -265,7 +265,7 @@ def testFencedAmps(self):
else:
expected = self.dedent(
'''
<pre class="text codehilite"><code class="language-text">&amp;
<pre class="codehilite"><code class="language-text">&amp;
&amp;amp;
&amp;amp;amp;
</code></pre>
Expand Down Expand Up @@ -341,7 +341,7 @@ def testFencedMultipleClassesInAttr(self):
),
self.dedent(
'''
<pre><code class="language-python foo bar"># Some python code
<pre class="foo bar"><code class="language-python"># Some python code
</code></pre>
'''
),
Expand Down Expand Up @@ -395,7 +395,7 @@ def testFencedIdAndLangAndClassInAttr(self):
),
self.dedent(
'''
<pre id="foo"><code class="language-python bar"># Some python code
<pre id="foo" class="bar"><code class="language-python"># Some python code
</code></pre>
'''
),
Expand Down Expand Up @@ -441,7 +441,7 @@ def testFencedCodeWithHighlightLinesInAttr(self):
def testFencedLanguageAndHighlightLinesInAttr(self):
if self.has_pygments:
expected = (
'<div class="python codehilite"><pre><span></span><code>'
'<div class="codehilite"><pre><span></span><code>'
'<span class="hll"><span class="n">line</span> <span class="mi">1</span>\n'
'</span><span class="n">line</span> <span class="mi">2</span>\n'
'<span class="hll"><span class="n">line</span> <span class="mi">3</span>\n'
Expand All @@ -450,7 +450,7 @@ def testFencedLanguageAndHighlightLinesInAttr(self):
else:
expected = self.dedent(
'''
<pre class="python codehilite"><code class="language-python">line 1
<pre class="codehilite"><code class="language-python">line 1
line 2
line 3
</code></pre>
Expand Down Expand Up @@ -552,13 +552,13 @@ def testFencedLanguageAttrCssclass(self):
if self.has_pygments:
expected = self.dedent(
'''
<div class="python pygments"><pre><span></span><code><span class="c1"># Some python code</span>
<div class="pygments"><pre><span></span><code><span class="c1"># Some python code</span>
</code></pre></div>
'''
)
else:
expected = (
'<pre class="python pygments"><code class="language-python"># Some python code\n'
'<pre class="pygments"><code class="language-python"># Some python code\n'
'</code></pre>'
)
self.assertMarkdownRenders(
Expand All @@ -576,16 +576,16 @@ def testFencedLanguageAttrCssclass(self):
def testFencedLanguageAttrLinenums(self):
if self.has_pygments:
expected = (
'<table class="python codehilitetable"><tr>'
'<table class="codehilitetable"><tr>'
'<td class="linenos"><div class="linenodiv"><pre>1</pre></div></td>'
'<td class="code"><div class="python codehilite"><pre><span></span>'
'<td class="code"><div class="codehilite"><pre><span></span>'
'<code><span class="c1"># Some python code</span>\n'
'</code></pre></div>\n'
'</td></tr></table>'
)
else:
expected = (
'<pre class="python codehilite"><code class="language-python linenums"># Some python code\n'
'<pre class="codehilite"><code class="language-python linenums"># Some python code\n'
'</code></pre>'
)
self.assertMarkdownRenders(
Expand Down Expand Up @@ -628,14 +628,14 @@ def testFencedLanguageAttrGuesslang(self):
def testFencedLanguageAttrNoclasses(self):
if self.has_pygments:
expected = (
'<div class="python codehilite" style="background: #f8f8f8">'
'<div class="codehilite" style="background: #f8f8f8">'
'<pre style="line-height: 125%; margin: 0;"><span></span><code>'
'<span style="color: #408080; font-style: italic"># Some python code</span>\n'
'</code></pre></div>'
)
else:
expected = (
'<pre class="python codehilite"><code class="language-python"># Some python code\n'
'<pre class="codehilite"><code class="language-python"># Some python code\n'
'</code></pre>'
)
self.assertMarkdownRenders(
Expand Down