doc: make the color literal swatch patching work with vanilla Pygments.

doc/changelog.dox

@@ -1410,6 +1410,10 @@ See also:
         data to slices of @ref Text::AbstractGlyphCache::image() instead and
         call @relativeref{Text::AbstractGlyphCache,flushImage()} instead. The
         old API can only be called on 2D glyph caches now.
+    -   @cpp Text::DistanceFieldGlyphCache::distanceFieldTextureSize() @ce and
+        @cpp setDistanceFieldImage() @ce is deprecated in favor of
+        @ref Text::AbstractGlyphCache::processedSize() and
+        @relativeref{Text,AbstractGlyphCache,setProcessedImage()}
 -   The @cpp TextureTools::atlas() @ce utility is deprecated in favor of
     @ref TextureTools::AtlasLandfill, which has a vastly better packing
     efficiency, supports incremental packing and doesn't force the caller to

doc/conf.py

@@ -38,7 +38,13 @@ FAVICON = 'favicon.ico'
 
 VERSION_LABELS = True
 
-_magnum_colors_src = re.compile(r"""<span class="mh">0x(?P<hex>[0-9a-f]{6})(?P<alpha>[0-9a-f]{2})?(?P<literal>_s?rgba?f?)</span>""")
+# There used to be a Pygments patch that would recognize the suffix as part of
+# the literal, https://github.com/pygments/pygments/pull/1303, but it fell
+# though the cracks and I was unable to resubmit it again. So this patch adds
+# both the color swatch and removes the </span><span class="n> in between.
+# TODO either resubmit the patch or do this patching also for all others (_deg,
+# _rad, _sec, _nsec, ...)
+_magnum_colors_src = re.compile(r"""<span class="mh">0x(?P<hex>[0-9a-f]{6})(?P<alpha>[0-9a-f]{2})?(</span><span class="n">)?(?P<literal>_s?rgba?f?)</span>""")
 _magnum_colors_dst = r"""<span class="mh">0x\g<hex>\g<alpha>\g<literal><span class="m-code-color" style="background-color: #\g<hex>;"></span></span>"""
 
 # Code wrapped in DOXYGEN_ELLIPSIS() will get replaced by an (Unicode) ellipsis