Add new 'calendar-weekend-days' option

Make the days receiving the `calendar-weekend-header' face freely
customizable, as they differ by region/culture.
* doc/emacs/calendar.texi: Document the new variable.
* lisp/calendar/calendar.el (calendar-generate-month): New variable
calendar-weekend-days to customize day header fontification.

1 files changed, 4 insertions, 1 deletions

diff --git a/doc/emacs/calendar.texi b/doc/emacs/calendar.texi
index 6b21dda4844..2ab0ff34c0f 100644
--- a/doc/emacs/calendar.texi
+++ b/doc/emacs/calendar.texi
@@ -177,10 +177,13 @@ repeat count indicating how many weeks, months, or years to move
 backward or forward.
 
 @vindex calendar-week-start-day
+@vindex calendar-weekend-days
 @cindex weeks, which day they start on
 @cindex calendar, first day of week
   By default, weeks begin on Sunday.  To make them begin on Monday
-instead, set the variable @code{calendar-week-start-day} to 1.
+instead, set the variable @code{calendar-week-start-day} to 1.  To
+change which day headers are highlighted as weekend days, set the
+variable @code{calendar-weekend-days}
 
 @node Specified Dates
 @subsection Specified Dates