master e9c3d04 2/5: * lisp/htmlfontify.el (hfy-triplet-regex): Use rx.

[Stefan Kangas]

branch: master
commit e9c3d040bcfab5908e6deb7330038f36ce95bc93
Author: Stefan Kangas <stefan@marxist.se>
Commit: Stefan Kangas <stefan@marxist.se>

    * lisp/htmlfontify.el (hfy-triplet-regex): Use rx.
---
 lisp/htmlfontify.el | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/lisp/htmlfontify.el b/lisp/htmlfontify.el
index 0c8d534..550083d 100644
--- a/lisp/htmlfontify.el
+++ b/lisp/htmlfontify.el
@@ -523,13 +523,10 @@ therefore no longer care about) will be invalid at any 
time.\n
 (defvar hfy-tmpfont-stack nil
   "An alist of derived fonts resulting from overlays.")
 
-(defconst hfy-hex-regex "[[:xdigit:]]")
-
 (defconst hfy-triplet-regex
-  (concat
-   "\\(" hfy-hex-regex hfy-hex-regex "\\)"
-   "\\(" hfy-hex-regex hfy-hex-regex "\\)"
-   "\\(" hfy-hex-regex hfy-hex-regex "\\)"))
+  (rx (group xdigit xdigit)
+      (group xdigit xdigit)
+      (group xdigit xdigit)))
 
 (defun hfy-interq (set-a set-b)
   "Return the intersection (using `eq') of two lists SET-A and SET-B."