doc: emphasize platform-independence of abs-path-p.

* txr.1: Adding text to abs-path-p description which
emphasizes that the definition of absolute path it uses
is platform-agnostic.

2 files changed, 8 insertions, 0 deletions

diff --git a/stream.c b/stream.c
index 9016555e..a7ff92c8 100644
--- a/stream.c
+++ b/stream.c
@@ -40,6 +40,9 @@
 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
+#ifdef __CYGWIN__
+#include <sys/utsname.h>
+#endif
 #if HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
diff --git a/txr.1 b/txr.1
index 423fdb8e..6a29f53d 100644
--- a/txr.1
+++ b/txr.1
@@ -41370,6 +41370,11 @@ or
 .code nil
 indication.
 
+The function behaves in the same manner on all platforms, implementing
+a platform-agnostic definition of
+.IR "absolute path" ,
+as follows.
+
 An absolute path is a string which either begins with a slash or backslash
 character, or which begins with an alphanumeric word, followed by a colon,
 followed by a slash or backslash.