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author | Stefan Eßer <se@FreeBSD.org> | 2020-11-03 22:13:16 +0000 |
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committer | Stefan Eßer <se@FreeBSD.org> | 2020-11-03 22:13:16 +0000 |
commit | 321b3540eb1afc2617b5ee3eb89ed98e02d2f311 (patch) | |
tree | 356ddf4c0ec6cbb92802e3eaaafe9c6c478f4a53 /usr.bin/calendar | |
parent | 32fbec42f54ce275adce4a69af0104f736ac9a91 (diff) | |
download | src-321b3540eb1afc2617b5ee3eb89ed98e02d2f311.tar.gz src-321b3540eb1afc2617b5ee3eb89ed98e02d2f311.zip |
Update man-page to document changes made to the calendar program.
MFC after: 3 days
Notes
Notes:
svn path=/head/; revision=367308
Diffstat (limited to 'usr.bin/calendar')
-rw-r--r-- | usr.bin/calendar/calendar.1 | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/usr.bin/calendar/calendar.1 b/usr.bin/calendar/calendar.1 index 240c74d571fe..eeadc92152b7 100644 --- a/usr.bin/calendar/calendar.1 +++ b/usr.bin/calendar/calendar.1 @@ -198,12 +198,20 @@ file is preprocessed by a limited subset of .Xr cpp 1 internally, allowing the inclusion of shared files such as lists of company holidays or meetings. -This limited subset consists of \fB#include #ifdef #ifndef #else -#endif\fR and \fB#define\fR. Conditions can be nested, but not check -for matching begin and end directives is performed. -Included files are parsed in their own scope. -They have no read or write access to condition variables defined in -an outer scope and open conditional blocks are implicitly closed. +This limited subset consists of \fB#include\fR, \fB#define\fR, +\fB#undef\fR, \fB#ifdef\fR, \fB#ifndef\fR, and \fB#else\fR. +.Pp +Conditions can be nested and the consistency of opening and closing +instructions is checked. +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 If the shared file is not referenced by a full pathname, .Nm |