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notes about some header files

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The gist of this appeared previously in the commit message for
b722cf99.
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nhmall
2023-07-04 09:53:51 -04:00
parent 0e97f8901a
commit 6e3ccaa8a5
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DEVEL/code_features.txt
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@@ -101,6 +101,23 @@ engine are incompatible.
Additional regular expression implementations can be written. The full
interface documentation is in sys/share/posixregex.c
===========================================================
HEADER FILE NOTES
hack.h defines values that are available to all NetHack source files,
contains enums for use in all NetHack source files, and contains a
number of struct definitions for use in all NetHack source files.
hack.h does not contain variable declarations or variable definitions.
decl.h and decl.c are related: decl.h contains the extern declarations
for variables that are defined in decl.c. These variables are global
and available to all NetHack source files.
decl.c variable definitions are generally laid out in much the same
order as their corresponding declarations in decl.h.
A new header file cstd.h was added to coincide with 3.7's switch to
C99. It contains calls to some C99 standard header files.
=================== NEXT FEATURE ==========================