Missing feature in .properties highlighting

Issue #1243 resolved
Former user created an issue

The following http://pygments.org/demo/4970377/

Highlights some missing feature in .properties highlighting.

  1. ! is also seen as a comment character when used as the first non-whitespace character at the start of a line.
  2. Space is a valid delimiter between key and value. Note that space can be escaped in the key also key\ with\ space value
  3. A key can exist with no value set.