Re: Bug with diary-float ?

[Brian Adkins]

reingold@emr.cs.iit.edu (Edward M. Reingold) writes:

>>>>>> "BA" == Brian Adkins <lojicdotcom@gmail.com> writes:
>
>     BA> I have the following line in my diary file: %%(diary-float t 0 5)
>     BA> 09:30-10:00 The Event
>
>     BA> It does correctly show the event for the 5th Sunday of months that
>     BA> have 5 Sundays, but it also shows on the 1st Sunday of a month
>     BA> following a month with only 4 Sundays :) Apparently the check to see
>     BA> if the computed day is still in the same month is missing or
>     BA> incorrect.
>
>     BA> Is this a known bug? I looked at the code in diary-lib.el, but my
>     BA> newbie elisp skills are not up to the task - that is one big hairy
>     BA> function.
>
> A bug in the documentation.  The documentation reads
>
>   Floating diary entry--entry applies if date is the nth dayname of month.
>   Parameters are MONTH, DAYNAME, N.  MONTH can be a list of months, the
>   constant t, or an integer.  The constant t means all months.  If N is
>   negative, count backward from the end of the month.
>
>   An optional parameter DAY means the Nth DAYNAME on or after/before MONTH DAY
>
> But it should really say
>
>   Floating diary entry--entry applies if date is the nth dayname on or after
>   the first of month.  Parameters are MONTH, DAYNAME, N.  MONTH can be a list
>   of months, the constant t, or an integer.  The constant t means all months.
>   If N is negative, count backward from the end of the month.
>
>   An optional parameter DAY means the Nth DAYNAME on or after/before MONTH DAY

Huh? Are you saying that May 4, 2008 should count as a "5th Sunday of
the month"? diary-float works as I'd expect for all cases where the date
actually exists in the month e.g. 1st Wednesday, 3rd Wednesday, 2nd
Saturday, etc.

I think it's a bug in the function, not the documentation.

>
> -- 
>
> Professor Edward M. Reingold                Email: reingold@iit.edu
> Department of Computer Science              Voice: (312) 567-3309
> Illinois Institute of Technology            Fax:   (312) 567-5067
> Stuart Building, 228F
> 10 West 31st Street
> Chicago, IL  60616-3729  U.S.A.