Make pygments unconditional, it is required by setup.py anyway.

sphinx/highlighting.py

@@ -24,46 +24,32 @@ from sphinx.util.pycompat import htmlescape
 from sphinx.util.texescape import tex_hl_escape_map_new
 from sphinx.ext import doctest
 
-try:
-    import pygments
-    from pygments import highlight
-    from pygments.lexers import PythonLexer, PythonConsoleLexer, CLexer, \
-         TextLexer, RstLexer
-    from pygments.lexers import get_lexer_by_name, guess_lexer
-    from pygments.formatters import HtmlFormatter, LatexFormatter
-    from pygments.filters import ErrorToken
-    from pygments.styles import get_style_by_name
-    from pygments.util import ClassNotFound
-    from sphinx.pygments_styles import SphinxStyle, NoneStyle
-except ImportError:
-    pygments = None
-    lexers = None
-    HtmlFormatter = LatexFormatter = None
-else:
+from pygments import highlight
+from pygments.lexers import PythonLexer, PythonConsoleLexer, CLexer, \
+    TextLexer, RstLexer
+from pygments.lexers import get_lexer_by_name, guess_lexer
+from pygments.formatters import HtmlFormatter, LatexFormatter
+from pygments.filters import ErrorToken
+from pygments.styles import get_style_by_name
+from pygments.util import ClassNotFound
+from sphinx.pygments_styles import SphinxStyle, NoneStyle
 
-    lexers = dict(
-        none = TextLexer(),
-        python = PythonLexer(),
-        pycon = PythonConsoleLexer(),
-        pycon3 = PythonConsoleLexer(python3=True),
-        rest = RstLexer(),
-        c = CLexer(),
-    )
-    for _lexer in lexers.values():
-        _lexer.add_filter('raiseonerror')
+lexers = dict(
+    none = TextLexer(),
+    python = PythonLexer(),
+    pycon = PythonConsoleLexer(),
+    pycon3 = PythonConsoleLexer(python3=True),
+    rest = RstLexer(),
+    c = CLexer(),
+)
+for _lexer in lexers.values():
+    _lexer.add_filter('raiseonerror')
 
 
 escape_hl_chars = {ord(u'\\'): u'\\PYGZbs{}',
                    ord(u'{'): u'\\PYGZob{}',
                    ord(u'}'): u'\\PYGZcb{}'}
 
-# used if Pygments is not available
-_LATEX_STYLES = r'''
-\newcommand\PYGZbs{\char`\\}
-\newcommand\PYGZob{\char`\{}
-\newcommand\PYGZcb{\char`\}}
-'''
-
 # used if Pygments is available
 # use textcomp quote to get a true single quote
 _LATEX_ADD_STYLES = r'''
@@ -80,8 +66,6 @@ class PygmentsBridge(object):
     def __init__(self, dest='html', stylename='sphinx',
                  trim_doctest_flags=False):
         self.dest = dest
-        if not pygments:
-            return
         if stylename is None or stylename == 'sphinx':
             style = SphinxStyle
         elif stylename == 'none':
@@ -153,8 +137,6 @@ class PygmentsBridge(object):
     def highlight_block(self, source, lang, warn=None, force=False, **kwargs):
         if not isinstance(source, text_type):
             source = source.decode()
-        if not pygments:
-            return self.unhighlighted(source)
 
         # find out which lexer to use
         if lang in ('py', 'python'):
@@ -213,11 +195,6 @@ class PygmentsBridge(object):
             return hlsource.translate(tex_hl_escape_map_new)
 
     def get_stylesheet(self):
-        if not pygments:
-            if self.dest == 'latex':
-                return _LATEX_STYLES
-            # no HTML styles needed
-            return ''
         formatter = self.get_formatter()
         if self.dest == 'html':
             return formatter.get_style_defs('.highlight')