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Update defs.rem

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Dianne Skoll
2022-03-11 23:06:24 -05:00
parent c4588654ec
commit 25009de417
1 changed files with 11 additions and 13 deletions
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examples/defs.rem
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@@ -70,25 +70,23 @@ REM 1 MSG John's [_mo_num(11, 1984)] 'monthly' anniversary
# Here's a tricky problem: The 4th of July is a holiday in the U.S.
# However, if it falls on a Saturday, the previous Friday is a holiday.
# If it falls on a Sunday, the next Monday is a holiday. Here's how
# to do it. NOTE that the following procedure makes the OMIT context
# dependent upon the current date. SInce it only depends on the current
# year, which is not likely to change while producing a calendar, we
# are fairly safe. However, reminders with huge DELTA or BACK components
# may not operate as expected. In general, any time you make OMIT
# dependent upon the current date, it's tricky and results may not be
# what you expect. You should try to make sure that the OMIT context
# "near" any current reminders will not change during a calendar run.
# The SCANFROM clause will make these OMITs safe.
# to do it.
#
# For those reminders that update the OMIT context with ADDOMIT, we use
# SCANFROM -7 for safety; see the man page about moveable OMITs.
############################################################################
# If it falls on a Saturday, bump to previous Friday
REM 4 July OMIT SAT BEFORE SATISFY [$Td != 4] MSG Independence day (observed)
REM 4 July OMIT SAT SCANFROM -1 BEFORE ADDOMIT SATISFY [$Td != 4] MSG Independence day (observed)
# If it falls on a Sunday, bump to following Monday
REM 4 July OMIT SUN AFTER SATISFY [$Td != 4] MSG Independence day (observed)
REM 4 July OMIT SUN SCANFROM -7 AFTER ADDOMIT SATISFY [$Td != 4] MSG Independence day (observed)
# Otherwise observe on the 4th
REM 4 July OMIT SAT SUN SKIP MSG Independence Day
# If it falls on Sat or Sun, note the actual day
REM 4 July SATISFY [$Tw == 0 || $Tw == 6] MSG Independence day (actual)
# Otherwise observed and actual is on the 4th
REM 4 July OMIT SAT SUN SKIP SCANFROM -7 ADDOMIT MSG Independence Day
##########################################################################
# #