bug#288: Conf[Xdefaults] mode vs. continuation lines

[jidanni]

In conf-mode.el:

  Some files allow continuation lines, either with a backslash at
  the end of line, or by indenting the next line (further).  These
  constructs cannot currently be recognized.

  Because of this great variety of nuances, which are often not
  even clearly specified, please don't expect it to get every file
  quite right.  Patches that clearly identify some special case,
  without breaking the general ones, are welcome.

Well, all I know is that in
$ emacs -Q .Xresources
only the first line of this
!*VT100.font: -arphic-ar pl uming \
             tw-light-r-normal--17-120-100-100-c-0-iso10646-1
shows up in comment color, whereas experiments prove that, unlike
bash, both lines are in fact comments. No patch, just letting you know.