Switch to highlight.js and revamp color stylesheet

Switching from the dead jQuery.syntax to the actively maintained highlight.js
for syntax highlighting. highlight.js doesn't require jQuery, doesn't break
inline markup, and has nicely namespaced class names that avoid clashes with
classes used elsewhere in these stylesheets.

Previously, we included the JavaScript for syntax highlighting, but didn't
provide any CSS to specify colors, leaving a large chunk of work to users
to get syntax highlighting visible. This is because the colors defined in
color.xsl weren't useful as text colors. This commit introduces a new color
system which includes background, foreground, and accent shades for six
colors, as well as multiple shades of gray. Many of these colors can now
be automatically computed, thanks to color algorithms built into the XSLT.

1 files changed, 44 insertions, 0 deletions

diff --git a/test/syntax/code/d b/test/syntax/code/d
new file mode 100644
index 00000000..92cc8d84
--- /dev/null
+++ b/test/syntax/code/d
@@ -0,0 +1,44 @@
+#!/usr/bin/rdmd
+// Computes average line length for standard input.
+import std.stdio;
+
+/+
+  this is a /+ nesting +/ comment
++/
+
+enum COMPILED_ON = __TIMESTAMP__;  // special token
+
+enum character = '©';
+enum copy_valid = '©';
+enum backslash_escaped = '\\';
+
+// string literals
+enum str = `hello "world"!`;
+enum multiline = r"lorem
+ipsum
+dolor";  // wysiwyg string, no escapes here allowed
+enum multiline2 = "sit
+amet
+\"adipiscing\"
+elit.";
+enum hex = x"66 6f 6f";   // same as "foo"
+
+#line 5
+
+// float literals
+enum f = [3.14f, .1, 1., 1e100, 0xc0de.01p+100];
+
+static if (something == true) {
+   import std.algorithm;
+}
+
+void main() pure nothrow @safe {
+    ulong lines = 0;
+    double sumLength = 0;
+    foreach (line; stdin.byLine()) {
+        ++lines;
+        sumLength += line.length;
+    }
+    writeln("Average line length: ",
+        lines ? sumLength / lines : 0);
+}