[ESS] change font-lock-string-face for back ticks

[Vitalie Spinu]

 >>> Munawar Cheema on Mon, 17 Feb 2014 15:35:59 +0000 wrote:

[...]

 > In my emacs statements such as:
 > `%weirdly-named-function` <- function(){}
 > `var-name` <- "djsf"

 > The face of the function is the string-face and not the face for
 > functions and similarly for the var-name face.

For me the function is highlighted with
font-lock-function-name-face. The `var-name` is indeed highlighted as a
string. It kind of makes sense for it not to be.

  Vitalie