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Update man-page to document changes made to the calendar program.

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MFC after:	3 days
This commit is contained in:
Stefan Eßer 2020-11-03 22:13:16 +00:00
parent 32fbec42f5
commit 321b3540eb
1 changed files with 14 additions and 6 deletions
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20
usr.bin/calendar/calendar.1
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@ -198,12 +198,20 @@ file is preprocessed by a limited subset of
.Xr cpp 1 .Xr cpp 1
internally, allowing the inclusion of shared files such as internally, allowing the inclusion of shared files such as
lists of company holidays or meetings. lists of company holidays or meetings.
This limited subset consists of \fB#include #ifdef #ifndef #else This limited subset consists of \fB#include\fR, \fB#define\fR,
#endif\fR and \fB#define\fR. Conditions can be nested, but not check \fB#undef\fR, \fB#ifdef\fR, \fB#ifndef\fR, and \fB#else\fR.
for matching begin and end directives is performed. .Pp
Included files are parsed in their own scope. Conditions can be nested and the consistency of opening and closing
They have no read or write access to condition variables defined in instructions is checked.
an outer scope and open conditional blocks are implicitly closed. Only the first word after #define is used as the name of the
condition variable being defined.
More than word following #ifdef, #ifndef, or #undef is a ayntax
error, since names cannot include white-space.
Included files are parsed in a global scope with regard to the condition
variables being defined or tested therein.
All conditional blocks are implicitly closed at the end of a file,
and missing #endif instructions are assumed to be present on implied
succeeding lines.
.Pp .Pp
If the shared file is not referenced by a full pathname, If the shared file is not referenced by a full pathname,
.Nm .Nm