Update man-page to document changes made to the calendar program.
MFC after: 3 days
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=367308
@ -198,12 +198,20 @@ file is preprocessed by a limited subset of
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.Xr cpp 1
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internally, allowing the inclusion of shared files such as
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lists of company holidays or meetings.
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This limited subset consists of \fB#include #ifdef #ifndef #else
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#endif\fR and \fB#define\fR. Conditions can be nested, but not check
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for matching begin and end directives is performed.
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Included files are parsed in their own scope.
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They have no read or write access to condition variables defined in
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an outer scope and open conditional blocks are implicitly closed.
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This limited subset consists of \fB#include\fR, \fB#define\fR,
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\fB#undef\fR, \fB#ifdef\fR, \fB#ifndef\fR, and \fB#else\fR.
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.Pp
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Conditions can be nested and the consistency of opening and closing
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instructions is checked.
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Only the first word after #define is used as the name of the
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condition variable being defined.
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More than word following #ifdef, #ifndef, or #undef is a ayntax
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error, since names cannot include white-space.
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Included files are parsed in a global scope with regard to the condition
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variables being defined or tested therein.
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All conditional blocks are implicitly closed at the end of a file,
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and missing #endif instructions are assumed to be present on implied
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succeeding lines.
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.Pp
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If the shared file is not referenced by a full pathname,
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.Nm
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