* configure: Added test for <sys/stat.h>

* eval.c: New intrinsic functions "stat" and "prop".

* stream.c: Include <sys/stat.h> if we have it.
(w_stat, statf): New functions.
(val dev_k, ino_k, mode_k, nlink_k, uid_k,
val gid_k, rdev_k, size_k, blksize_k, blocks_k;
val atime_k, mtime_k, ctime_k): New sybol variables.
(stream_init): Intern new keywords symbols.

* stream.h (statf): Declared.

* txr.1: prop documented. Stub for stat created.

1 files changed, 26 insertions, 0 deletions

diff --git a/txr.1 b/txr.1
index c4ede065..23af993b 100644
--- a/txr.1
+++ b/txr.1
@@ -6947,6 +6947,30 @@ cell of the input alist. That is to say, each element of the output list
 is produced as if by the copy-cons function applied to the corresponding
 element of the input list.
 
+.SH PROPERTY LISTS
+
+.SS Function prop
+
+.TP
+Syntax:
+
+  (prop <plist> <key>)
+
+.TP
+Description:
+
+A property list a flat list of even length consisting of interleaved
+pairs of property names (usually symbols) and their values (arbitrary
+objects). An example property list is (:a 1 :b "two") which contains
+two properties, :a having value 1, and :b having value "two".
+
+The prop function searches property list <plist> for key <key>. If
+the key is found, then the value next to it is returned. Otherwise
+nil is returned.
+
+It is ambiguous whether nil is returned due to the property not being
+found, or due to the property being present with a nil value.
+
 .SH LIST SORTING
 
 .SS Function merge
@@ -9437,6 +9461,8 @@ meaningful, it does nothing.
 
 .SH FILESYSTEM ACCESS
 
+.SS Function stat
+
 .SS Function open-directory
 
 .SS Functions open-file